TY - CONF A1 - Baer, Wolfram A1 - Müller, Karsten A1 - Wossidlo, Peter A1 - Klingbeil, Dietmar T1 - Dynamic fracture toughness behaviour of ductile cast iron with respect to structural integrity assessment N2 - Modern structural integrity assessment procedures in the field of nuclear related technology incorporate fracture mechanical concepts. Therefore, they inevitably require the availability of both, loading parameters as well as material characteristics in terms of fracture mechanical quantities. Especially in case of dynamic loading conditions, the methods for the determination of the loading parameters need further improvement and there is a lack of material characteristics as well. In Germany, ductile cast iron (DCI) is used for heavy-sectioned casks for radioactive materials. New developments in cask design and efforts to extend the application limits require further investigations. The present study is part of an ongoing fracture mechanics research programme of BAM which is focused on the systematic mechanical and fracture mechanical material characterisation of DCI materials under dynamic loading conditions. In this study, results of fracture mechanics investigations on ductile cast iron from an original DCI container with a wide variety of microstructure under dynamic loading conditions in the temperature range from -50 °C to +22 °C are presented. Large scale as well as small scale single edge crack bend specimens SE(B) with thicknesses of 140 mm and 15 mm, respectively were tested. Furthermore, it is reported on the results of a finite element simulation of the dynamic large scale fracture mechanics tests. Strength and deformation characteristics were determined in dynamic tensile tests. They are discussed with respect to the influence of pearlite content and test temperature. The material specific experimental difficulties in the determination of reliable dynamic crack initiation toughness values of DCI are outlined. T2 - 17th International Conference on Structural Mechanics in Reactor Technology ; SMiRT 17 CY - Prague, Czech Republic DA - 2003-08-17 KW - Dynamic fracture toughness KW - Ductile cast iron KW - Structural integrity KW - Component KW - Specimen geometry KW - Testing KW - Loading rate KW - Test temperature KW - Microstructure KW - Graphite morphology KW - Crack initiation toughness KW - Analysis procedure KW - Finite element simulation KW - Fracture mechanics PY - 2003 IS - G04-4 SP - 1 EP - 8 CY - Prague AN - OPUS4-2856 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Quercetti, Thomas A1 - Ballheimer, Viktor A1 - Zeisler, Peter A1 - Müller, Karsten T1 - Interactions between Cask Components and Content of Packaging for the Transport of Radioactive Material During Drop Tests N2 - This paper describes the analytical, numerical and experimental investigations on the phenomenon of interactions between cask components and content of packages for the transport of radioactive material during drop tests required according to the IAEA Regulations for the Safe Transport of Radioactive Material. Radial and axial gaps between cask components and content are usually necessary for thermal reasons but larger gaps can exist because of the geometrical dimensions of the specified content. Consequently interactions between content and cask components (lid system, cask body, etc.) are possible and can not be excluded during drop tests. Interactions in this context are relative movements between cask and content which are mainly due to elastic spring effects after releasing the cask for the free drop. These relative movements can cause interior collisions between content and cask during the main impact of the package onto the unyielding target. Drop tests with various types of Type A and Type B packages fully instrumented with strain gauges and accelerometers showed that these interactions respectively interior collisions can be considerable relating to high forces acting on cask lids, lid bolts and the content. Of course the real quantitative consequences of the interactions depend upon different conditions, among others the drop orientation, the design characteristics of the impact limiters, the dimensions of the gaps, the material characteristics of the contents, etc. . In order to investigate more precisely the phenomenon of interactions BAM carried out finite element calculations for the named casks using the ABAQUS/ Standard and ABAQUS/ Explicit computer code comparing them with results obtained from experiments. Additionally, tests with a simplified model instrumented with accelerometers were carried out accompanied by finite element calculations and analytical calculations using MATHEMATICA. The investigations on the mentioned phenomena of interaction show that they should be considered in approval design tests and/ or calculations. T2 - 17th International Conference on Structural Mechanics in Reactor Technology ; SMiRT 17 CY - Prague, Czech Republic DA - 2003-08-17 PY - 2003 UR - http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/36/071/36071659.pdf IS - G04-4 SP - 1(?) EP - 8(?) CY - Prague AN - OPUS4-2825 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Müller, Karsten A1 - Wossidlo, Peter A1 - Baer, Wolfram ED - Dlouhý, I. T1 - Fracture toughness behaviour of thick-walled nodular cast iron at elevated loading rates T2 - NATO Final Project Workshop on Fracture Resistance of Steels for Containers of Spent Nuclear Fuel ; NATO Final Project Workshop on Transferability of Fracture Mechanical Data CY - Brno, Czech Republic DA - 2001-11-05 KW - Ductile cast iron KW - Fracture mechanics KW - Specimen size effect KW - Loading rate effect PY - 2002 SN - 1-402-00794-9 SN - 1568-2609 N1 - Serientitel: NATO science series : Series 2, Mathematics, physics and chemistry – Series title: NATO science series : Series 2, Mathematics, physics and chemistry IS - 78 SP - 283 EP - 290 PB - Kluwer Academics Publishers CY - Dordrecht AN - OPUS4-1548 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zencker, Uwe A1 - Müller, Karsten T1 - Modern Safety Assessment of Cubic Cast Iron Containers Under Mechanical Impact N2 - In the present study, ductile cast iron from an original DCI container with a wide variety of microstructure was investigated in order to determine the materials fracture toughness under impact loading conditions. Three-point bending specimens with thickness of 140 mm from a cubic DCI container were investigated at elevated loading rates to provide reliable fracture toughness parameters for the assessment procedures. In contrast to static fracture behaviour, the fracture toughness values of thick-walled DCI at higher loading rates show a remarkable reduction with decreasing temperature up to –50 °C and a significant shift of the transition range. The lower bound fracture toughness value used in the BAM DCI safety concept was confirmed for impact loading conditions by these fracture mechanics tests using large specimens. These measurements are relevant to the licensing tests for storage containers without shock absorbers, especially to the assessment of the dynamic behaviour of crack-like defects inside a cask structure under drop test conditions. Using extensive dynamic numerical analyses it could be shown, that for special crack configurations the dynamic crack tip parameter (KI, or J) may be estimated by static formulae even under mechanical impact. These results of the safety assessment were verified according to the German Konrad repository acceptance criteria by a drop test with a cubic waste container with artificial crack-like defects from 5 m height onto a representative storage facility foundation. T2 - 17th International Conference on Structural Mechanics in Reactor Technology ; SMiRT 17 CY - Prague, Czech Republic DA - 2003-08-17 KW - Ductile cast iron KW - Mechanical impact KW - Dynamic fracture KW - Safety assessment KW - Storage containers PY - 2003 IS - G04-4 SP - 1(?) EP - 8(?) CY - Prague AN - OPUS4-2650 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Karsten A1 - Schriever, Sina A1 - Wossidlo, Peter A1 - Hamann, Andreas A1 - Löwe, Peter T1 - Bruchmechanische Untersuchungen von Gusseisen mit Kugelgraphit bei Stoss- und Schlagbiege-Beanspruchung T2 - 33. Tagung des DVM-Arbeitskreises Bruchvorgänge CY - Paderborn, Deutschland DA - 2001-02-20 KW - Ductile cast iron KW - DCI KW - Dynamic fracture toughness PY - 2001 SN - 0943-3473 N1 - Sprachen: Deutsch/Englisch - Languages: German/English IS - 233 SP - 267 EP - 274 PB - DVM CY - Berlin AN - OPUS4-1088 LA - mul AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Müller, Karsten A1 - Pusch, G. T1 - Anwendung des instrumentierten Kerbschlagbiegeversuchs zur Abschätzung der Rissauffangzähigkeit N2 - Die moderne Bauteilsicherheitsbewertung basiert auf Methoden der Bruchmechanik unter Anwendung von bruchmechanischen Kennwerten, die den Werkstoffwiderstand gegen Rissinitiierung und Rissfortschritt sowie das Rissauffangverhalten charakterisieren. Die experimentelle Ermittlung der Rissarrestzähigkeit ist im Allgemeinen jedoch schwierig und aufwendig. In diesem Beitrag werden Korrelationen für die Abschätzung der Sprödbruch-Übergangstemperatur (TNDT) und der Rissarrestzähigkeit (KIa) mit Hilfe einer Übergangstemperatur, die der Rissauffangkraft im instrumentierten Kerbschlagbiegeversuch entspricht, vorgestellt. Als Kriterien für den Zähigkeitsübergang gelten die an Charpy-V-Proben gemessene Rissauffangkraft 4 kN und die nach Master-Curve-Ansatz berechnete mittlere Rissarrestzähigkeit 100 MPam. Die für verschiedene Baustähle vorgeschlagenen Korrelationen zwischen den Übergangstemperaturen T(Fa = 4 kN), T(KIa) und TNDT werden am Beispiel des Stahles 18Ch2MFA bestätigt. PY - 2001 U6 - https://doi.org/10.1002/1521-4052(200106)32:6<539::AID-MAWE539>3.0.CO;2-4 SN - 0933-5137 SN - 1521-4052 VL - 32 IS - 6 SP - 539 EP - 543 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-1132 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Müller, Karsten A1 - Pusch, G. ED - François, D. ED - Pineau, A. T1 - Use of charpy impact testing to evaluate crack-arrest fracture toughness KW - Charpy-V KW - Instrumented impact test KW - Crack arrest fracture toughness KW - Ferritic structural steel PY - 2002 SN - 0-08-043970-5 SN - 1566-1369 N1 - Serientitel: ESIS publication – Series title: ESIS publication IS - 30 SP - 263 EP - 270 PB - Elsevier CY - Amsterdam AN - OPUS4-1427 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Baer, Wolfram A1 - Müller, Karsten A1 - Wossidlo, Peter T1 - Investigations on the Dynamic Fracture Toughness of Heavy-Section Ductile Cast Iron for Transport and Storage Casks T2 - PATRAM 2001 ; Annual International Symposium on Packaging and Transportation of Radioactive Materials CY - Chicago, IL, USA DA - 2001-09-03 PY - 2001 IS - CD-ROM PB - PATRAM CY - Chicago, Ill. AN - OPUS4-1930 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Müller, Karsten A1 - Baer, Wolfram A1 - Wossidlo, Peter A1 - Klingbeil, Dietmar ED - Neimitz, A. T1 - Investigations on the Dynamic Fracture Toughness Behaviour of Nodular Cast Iron T2 - 14th European Conference on Fracture ; 14th Biennial Conference on Fracture (14-ECF) CY - Cracow, Poland DA - 2002-09-08 PY - 2002 SN - 1-901537-37-4 VL - 2 SP - 501 EP - 508 PB - EMAS Publ. CY - Sheffield AN - OPUS4-1931 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Karsten A1 - Baer, Wolfram A1 - Wossidlo, Peter T1 - Investigation on the Dynamic Fracture Toughness of Heavy-Section Ductile Cast Iron for Transport and Storage Casks T2 - PATRAM 2001 ; Annual International Symposium on Packaging and Transportation of Radioactive Materials CY - Chicago, IL, USA DA - 2001-09-03 PY - 2001 IS - CD-ROM PB - PATRAM CY - Chicago, Ill. AN - OPUS4-1886 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - König, S. A1 - Diersch, R. A1 - Lührmann, A. A1 - Müller, Karsten A1 - Neumann, Martin A1 - Quercetti, Thomas A1 - Droste, Bernhard T1 - Full-Scale Drop Testing of the CONSTOR®, V/TC Package Program, and Preliminary Results KW - Drop test KW - Package KW - Spent fuel cask KW - Transport PY - 2005 SN - 0893-6188 VL - 33 IS - 3 SP - 4 EP - 10 PB - Institute of Nuclear Materials Management CY - Northbrook, Ill. AN - OPUS4-12269 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Droste, Bernhard A1 - Müller, Karsten A1 - Quercetti, Thomas T1 - Full-scale Drop Testing of Spent Fuel Transport and Storage Casks: experiences of BAM and new Developments T2 - 46th Annual Meeting of the Institute for Nuclear Materials Management CY - Phoenix, AZ, USA DA - 2005-07-10 KW - Drop tests KW - Spent fuel transport packages PY - 2005 SP - 6 pages PB - Institute for Nuclear Materials Management CY - Phoenix AN - OPUS4-7614 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Karsten A1 - Wille, Frank A1 - Droste, Bernhard T1 - Drop testing of spent fuel transport packages-experiences, applications, developments T2 - World Nuclear Transport Institute (WNTI) CY - Essen, Germany DA - 2006-06-06 PY - 2006 AN - OPUS4-12526 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Karsten A1 - Ballheimer, Viktor A1 - Droste, Bernhard A1 - Rödel, Roland A1 - Völzke, Holger A1 - Zencker, Uwe T1 - Die Anwendung der Bruchmechanik im Sicherheitsnachweis von Transportbehältern für die Beförderung radioaktiver Stoffe T2 - 36. Tagung des DVM-Arbeitskreises Bruchvorgänge CY - Köln, Deutschland DA - 2004-02-17 KW - Gusseisen mit Kugelgraphit KW - Bruchmechanischer Sicherheitsnachweis KW - Stoßbeanspruchung KW - Transportbehälter KW - Radioaktive Stoffe KW - Ductile iron KW - Fracture mechanics safety assessment KW - Mechanical impact KW - Transport casks KW - Radioactive material PY - 2004 SN - 0943-3473 IS - 236 SP - 225 EP - 238 PB - DVM CY - Berlin AN - OPUS4-5336 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Karsten A1 - Droste, Bernhard A1 - Quercetti, Thomas T1 - Measurement techniques and preliminary results of drop tests with full-scale spent fuel transport and storage casks T2 - 7th International Conference on Radioactive Materials Transport 2005 CY - Cambridge, England DA - 2005-09-27 PY - 2005 AN - OPUS4-11818 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Müller, Karsten A1 - Droste, Bernhard T1 - Die BAM nimmt neuen Prüfstand in Betrieb KW - Fallversuche KW - Transport- und Lagerbehälter für radioaktive Stoffe PY - 2004 SN - 1434-9728 SN - 1436-4948 SN - 0372-2457 SN - 0376-1185 VL - 45 IS - 10 SP - 7 PB - Springer-VDI-Verl. CY - Düsseldorf AN - OPUS4-4833 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Droste, Bernhard A1 - Müller, Karsten A1 - Minack, Mathias T1 - The New BAM 200 Ton Drop Test Facility - Construction and Operation Experiences T2 - 7th International Conference on Radioactive Materials Transport - 2005 CY - Cambridge, England, UK DA - 2005-09-27 KW - Drop test KW - Drop tower KW - Radioactive material transport packages PY - 2005 SP - 6 pages PB - The Institution of Nuclear Engineers (INucE) CY - Cambridge AN - OPUS4-12044 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Karsten A1 - Musolff, André A1 - Grünewald, Heike A1 - Quercetti, Thomas T1 - Quality Assurance within Drop Testing of Containers for Radioactive Material T2 - RamTransport 2012, 9th International Conference on Radidoactive Material Transport and Storage CY - London, England DA - 2012-05-22 PY - 2012 AN - OPUS4-25960 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Musolff, André A1 - Quercetti, Thomas A1 - Müller, Karsten A1 - Droste, Bernhard A1 - Komann, Steffen T1 - Drop test program with half scale model CASTOR HAW/TB2 N2 - Federal Institute for Materials Research and Testing (BAM) is the competent authority for mechanical and thermal safety assessment of transport packages for spent fuel and high level waste in Germany. In context with package design approval of the new German high level waste cask CASTOR® HAW28M, BAM performed several drop tests with a half scale model of the CASTOR® HAW/TB2. The cask is manufactured by Gesellschaft für Nuklear Service mbH and was tested under accident transport conditions on the 200 tons BAM drop test facility at the BAM Test Site Technical Safety. For this comprehensive test program, the test specimen CASTOR® HAW/TB2 was instrumented at 21 measurement planes with altogether 23 piezo resistive accelerometers, five temperature sensors and 131 triaxial strain gauges in the container interior and exterior respectively. The strains of four representative lid bolts were recorded by four uniaxial strain gauges per each bolt. Helium leakage rate measurements were performed before and after each test in the above noted testing sequence. The paper presents some experimental results of the half scale CASTOR® HAW/TB2 prototype (14 500 kg) and measurement data logging. It illustrates the extensive instrumentation and analyses that are used by BAM for evaluating the cask performance to the mechanical tests required by regulations. Although some of the quantitative deceleration, velocity and strain values cannot be shown because of confidentially issues, they are provided qualitatively to illustrate the types of measurements and methodologies used at BAM. KW - IAEA drop testing KW - Half scale model KW - Experimental test PY - 2011 U6 - https://doi.org/10.1179/1746510911Y.0000000013 SN - 1746-5095 SN - 1746-5109 SN - 0957-476X VL - 22 IS - 3 SP - 154 EP - 160 PB - Ramtrans Publ. CY - Ashford AN - OPUS4-25293 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Musolff, André A1 - Komann, Steffen A1 - Droste, Bernhard A1 - Müller, Karsten A1 - Quercetti, Thomas T1 - Drop test program with a HLW cask model - performance, measurements and results N2 - BAM (Federal Institute for Material Research and Testing) is the competent authority for mechanical and thermal safety assessment of transport packages for spent fuel and high level waste (HLW) in Germany. In context with package design approval of the new German HLW cask CASTOR HAW28M, BAM performed several drop tests with a half-scale model of the CASTOR HAW/TB2. The test model was manufactured by GNS (Gesellschaft fur Nuklear Service mbH) and tested under accident transport conditions on the 200 tons BAM drop test facility at the BAM Test Site Technical Safety. For this comprehensive test program the test specimen CASTOR HAW/TB2 was instrumented at 21 measurement planes with altogether 23 piezo-resistive accelerometers, five temperature sensors and 131 tri-axial strain gauges in the container interior and exterior, respectively. The strains of four representative lid bolts were recorded by four uniaxial strain gauges per each bolt. Helium leakage rate measurements were performed before and after each test in the above noted testing sequence. The paper presents some experimental results of the half-scale CASTOR HAW/TB2 prototype (14,500 kg) and measurement data logging. T2 - 52nd INMM Annual meeting CY - Palm Desert, CA, USA DA - 17.07.2011 KW - Drop test results KW - Spent fuel transport cask KW - Impact limiter KW - Measurement methods KW - Drop test program PY - 2011 SP - 1 EP - 9 AN - OPUS4-24245 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Karsten T1 - Full-scale and small-scale spent fuel/HAW package drop testing, experiences since 2004, comparison between both test scenarios T2 - MEEting U.S. NRC - BAM CY - Washington, D.C., USA DA - 2007-10-18 PY - 2007 AN - OPUS4-16328 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Müller, Karsten A1 - Quercetti, Thomas A1 - Droste, Bernhard T1 - Measurement techniques and preliminary results of drop tests with full scale spent fuel transport and storage casks KW - Drop testing KW - Full scale spent fuel cask KW - Deceleration KW - Strain PY - 2006 SN - 1746-5095 SN - 1746-5109 SN - 0957-476X VL - 17 IS - 4 SP - 191 EP - 195 PB - Ramtrans Publ. CY - Ashford AN - OPUS4-14431 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Musolff, André A1 - Müller, Karsten A1 - Neumann, Martin A1 - Kadji, Arsène Brice A1 - Droste, Bernhard T1 - Drop Test Results of the Full-scale CONSTOR V/TC Prototype T2 - PATRAM 2007, 15th International Symposium on the Packaging and Transportation of Radioactive Materials CY - Miami, Florida, USA DA - 2007-10-21 PY - 2007 IS - Abstract #65 SP - 1 EP - 7 PB - Institute of Nuclear Materials Management AN - OPUS4-17838 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - König, S. A1 - Diersch, R. A1 - Lührmann, A. A1 - Müller, Karsten A1 - Neumann, Martin A1 - Quercetti, Thomas A1 - Droste, Bernhard T1 - Full-scale Drop Testing of the CONSTOR V/TC Package - Program and Preliminary Results KW - Fallversuche KW - Transportbehälter für radioaktive Stoffe PY - 2005 SN - 0893-6188 VL - 33 IS - 3 SP - 4 EP - 10 PB - Institute of Nuclear Materials Management CY - Northbrook, Ill. AN - OPUS4-6875 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Gründer, Klaus-Peter A1 - Kadoke, Daniel A1 - Müller, Karsten A1 - Musolff, André T1 - Characterisation of shock absorber deformation by optical surface digitisation N2 - The performance of shock absorbers has been tested in specific regulatory drop tests onto an unyielding target at the BAM drop test facility. Optical surface digitisation methods have been used to measure, analyse and evaluate permanent deformations of shock absorbers more systematically. The measurement principle of the used fringe projection technique and its technical application to shock absorber investigations is explained in detail. Furthermore, examples of shock absorber testing results as well as final data visualisation are given in the present paper. KW - Approval assessment of packages KW - Shock absorber KW - Drop test KW - Optical deformation measurement KW - Fringe projection KW - Three-dimensional surface digitisation KW - Optische Digitalisierung KW - Streifenprojektion KW - Fotogrammetrie KW - 3D-Verformung KW - Behälterzulassung PY - 2008 U6 - https://doi.org/10.1179/174651008X362566 SN - 1746-5095 SN - 1746-5109 SN - 0957-476X VL - 19 IS - 3 SP - 155 EP - 159 PB - Ramtrans Publ. CY - Ashford AN - OPUS4-18562 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gründer, Klaus-Peter A1 - Kadoke, Daniel A1 - Müller, Karsten A1 - Musolff, André T1 - Characterization of shock absorber deformation by optical surface digitization N2 - The performance of shock absorbers has been tested in specific regulatory drop tests onto an un-yielding target at the BAM drop test facility. Optical surface digitization methods have been used to measure, analyze and evaluate permanent deformations of shock absorbers more systemati-cally. The measurement principle of the fringe projection technique used and its technical appli-cation to shock absorber research is explained in detail in this paper. Furthermore, examples of shock absorber testing results as well as final data visualization are presented. T2 - PATRAM 2007, 15th International Symposium on the Packaging and Transportation of Radioactive Materials CY - Miami, Florida, USA DA - 2007-10-21 KW - 3D Verformung KW - Optische Digitalisierung KW - Behälterzulassung KW - Streifenprojektion KW - Fotogrammetrie PY - 2007 IS - Paper 84 SP - 1 EP - 6 PB - Institute of Nuclear Materials Management AN - OPUS4-18692 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Droste, Bernhard A1 - Müller, Karsten T1 - Test installations for the examination of CASTOR casks at the BAM test centre technical safety N2 - BAM as competent German government institute for the mechanical and thermal testing of radioactive material transport and storage containers, operates unique drop and fire test facilities for experimental investigations on an open-air Test Centre Technical Safety. To be able to perform even drop tests with full-scale spent fuel or HAW casks (i. e. the German CASTOR cask designs; “CASTOR” in the meantime in synonym for all other spent fuel cask designs) BAM constructed in 2004 a large drop test facility capable to handle 200 tons test objects, and to drop them onto a steel plate covered unyielding target with a mass of nearly 2600 tons. Drop testing of the 181 ton CONSTOR V/TC, the 127 ton MHI-MSF 69BG, a 1:2 scale model (CASTOR HAW TB2) and of cubic containers for radioactive waste disposal will briefly be presented. The experimental BAM drop testing activities can be supported also by drop testing of smaller packages (up to 2 tons) in an in-house test facility, and by dynamic, guided impact testing inside a new drop test machine. In May 2008 a new modern fire test facility was put into operation. The facility provides two test stands fired with liquid Propane. Testing in every case has to be completed by calculational investigations where BAM operates appropriate computer codes, e. g. ABAQUS, LS-Dyna, ANSYS and other analytical tools. T2 - 5th International Seminar on Radioactive Waste Products (RADWAP 2008) CY - Würzburg, Germany DA - 2008-10-27 KW - Drop tests KW - Fire tests KW - Finite element calculations KW - Radioactive waste packages KW - CASTOR casks KW - BAM test centre technical safety PY - 2008 SP - 1 EP - 8 AN - OPUS4-18781 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Karsten T1 - Experimentelle Fallprüfungen im Rahmen der Behälterbauartprüfung T2 - 1. RAM-Behältersicherheitstage 2009 CY - Berlin-Horstwalde, Germany DA - 2009-03-26 PY - 2009 AN - OPUS4-19178 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Müller, Karsten A1 - Quercetti, Thomas A1 - Musolff, André T1 - Characterisation of shock-absorbing components under impact loading N2 - For validation of structural integrity under normal and hypothetical accident conditions during transport and storage of dangerous goods the Federal Institute for Materials Research and Testing (BAM) focuses its safety related scientific research on advanced mechanical safety assessment methods including simulation of high rate impact of model components and structures. An impact and crash test facility was recently developed for performing dynamic impact tests with component size specimen, or to crash specimens of impact limiter materials and structural components. The paper presents experimental techniques of BAM drop test machine and options of several measurement methods and advancements in order to characterize typical shock-absorbing materials under impact loading conditions. Instrumented drop weight tests are performed to complete materials data base and energy absorption of shock-absorbing materials as well as to implement materials and structural parameters into FEA of reference structures. T2 - 9th International conference on the mechanical and physical behaviour of materials under dynamic loading - DYMAT 2009 CY - Brussels, Belgium DA - 2009-09-07 PY - 2009 SN - 978-2-7598-0472-6 U6 - https://doi.org/10.1051/dymat/2009081 VL - 1/2 SP - 569 EP - 574 PB - EDP Sciences AN - OPUS4-20242 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Droste, Bernhard A1 - Musolff, André A1 - Müller, Karsten A1 - Quercetti, Thomas T1 - Drop and fire testing of spent fuel and HLW transport casks at "BAM test site technical safety" - 10079 T2 - WM2010 - 36th Annual radioactive waste management symposium CY - Phoenix, Arizona, USA DA - 2010-03-07 KW - transport packages of radioactive materials KW - Safety KW - Mechanical tests KW - Thermal tests KW - Drop test facility KW - Fire test facilities KW - Numerical calculations PY - 2010 SN - 978-0-9828171-0-0 SP - 1 EP - 11 CY - Tempe, AZ, USA AN - OPUS4-21830 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Musolff, André A1 - Droste, Bernhard A1 - Quercetti, Thomas A1 - Müller, Karsten T1 - Durchführung experimenteller Fallprüfungen im Rahmen der mechanischen Bauartprüfung von Transportbehältern für radioaktive Stoffe T2 - Jahrestagung Kerntechnik 2010 CY - Berlin, Deutschland DA - 2010-05-04 PY - 2010 SP - 1 EP - 7 CY - Berlin AN - OPUS4-22770 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Musolff, André A1 - Quercetti, Thomas A1 - Müller, Karsten A1 - Droste, Bernhard A1 - Komann, Steffen T1 - Drop test program with the half-scale model CASTOR HAW/TB2 T2 - PATRAM 2010 - 16th International symposium on the packaging and transport of radioactive materials CY - London, UK DA - 2010-10-03 KW - Spent fuel transport cask KW - Drop test KW - Impact limiter KW - Measurement procedure PY - 2010 SP - 1 EP - 8 AN - OPUS4-22771 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Karsten T1 - Experimentelle ehälter- und Komponentenprüfungen von Gefahrgutverpackungen T2 - Symposium "Bruchmechanische Werkstoff- und Bauteilbewertung" CY - Freiberg, Germany DA - 2010-03-05 PY - 2010 AN - OPUS4-23540 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rolle, Annette A1 - Probst, Ulrich A1 - Ballheimer, Viktor A1 - Müller, Karsten A1 - Winkler, H. P. T1 - Transport condition effects on the sealing system and activity release within spent fuel transport casks T2 - RAMTRANSPORT 2012 - 9th International Conference on the Radioactive Materials Transport and Storage CY - London, UK DA - 2012-05-22 KW - Radioactive material KW - Safety assessment KW - Spent fuel KW - Leak tightness PY - 2012 SP - 1 EP - 9(?) AN - OPUS4-26498 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Droste, Bernhard A1 - Musolff, André A1 - Müller, Karsten A1 - Quercetti, Thomas T1 - Drop and fire testing of spent fuel and HLW transport casks at 'BAM test site technical safety' N2 - BAM, as a competent German government institute for the mechanical and thermal testing of radioactive material transport and storage containers, operates unique drop and fire test facilities for experimental investigations on the open air BAM Test Site Technical Safety. To be able to perform even drop tests with full scale spent fuel or HAW casks (i.e. the German CASTOR cask designs), BAM constructed in 2004 a large drop test facility capable to handle 200 ton test objects, and to drop them onto a steel plate covered unyielding target with a mass of nearly 2600 ton. Drop test campaigns of the 181 ton GNS CONSTOR V/TC, the 129 ton MHI MSF-69BG and a 1:2 scale model of the GNS CASTOR HAW28M (CASTOR HAW/TB2) have been performed since then. The experimental BAM drop testing activities can be supported also by drop testing of smaller packages (up to 2 ton) in an in-house test facility and by dynamic, guided impact testing of package components and material specimen inside a new drop test machine. In May 2008, a new modern fire test facility was put into operation. The facility provides two test stands fired with liquid propane. Testing in every case has to be completed by computational investigations, where BAM operates appropriate finite element modelling on appropriate computer codes, e.g. ABAQUS, LS-DYNA, ANSYS and other analytical tools. KW - Package testing KW - Drop testing KW - Fire testing KW - Regulations PY - 2011 U6 - https://doi.org/10.1179/1746510912Y.0000000002 SN - 1746-5095 SN - 1746-5109 SN - 0957-476X VL - 22 IS - 4 SP - 200 EP - 205 PB - Ramtrans Publ. CY - Ashford AN - OPUS4-26691 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Quercetti, Thomas A1 - Musolff, André A1 - Müller, Karsten T1 - Instrumented measurements on radioactive waste disposal containers during experimental drop testing N2 - In context with disposal container safety assessment of containers for radioactive waste the German Federal Institute for Materials Research and Testing (BAM) performed numerous drop tests in the last years. The tests were accompanied by extensive and various measurement techniques especially by instrumented measurements with strain gages and accelerometers. The instrumentation of a specimen is an important tool to evaluate its mechanical behavior during impact. Test results as deceleration-time and strain-time functions constitute a main basis for the validation of assumptions in the safety analysis and for the evaluation of calculations based on finite-element methods. Strain gauges are useful to determine the time dependent magnitude of any deformation and the associated stresses. Accelerometers are widely used for the measuring of motion i.e. speed or the displacement of the rigid cask body, vibration and shock events. In addition high-speed video technique can be used to visualize and analyze the kinematical impact scenario by motion analysis. The paper describes some selected aspects on instrumented measurements and motion analysis in context with low level radioactive waste (LLW) container drop testing T2 - ICEM 2011 - 14th International Conference on environmental remediation and radioactive waste management CY - Reims, France DA - 25.09.2011 KW - Drop test KW - Radioactive KW - Disposal container KW - Instrumented measurements PY - 2011 U6 - https://doi.org/10.1115/ICEM2011-59142 SP - 929 EP - 938 AN - OPUS4-27044 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nakagami, M. A1 - Quercetti, Thomas A1 - Komatsuki, S. A1 - Fujisawa, K. A1 - Nishio, T. A1 - Musolff, André A1 - Müller, Karsten A1 - Droste, Bernhard T1 - Waste container drop tests onto a concrete target N2 - The paper presents technical details of the drop test performance as well as some experimental results of tests carried out with the Japanese 'Yoyushindo-disposal' waste container for intermediate depth disposal. The tests were accompanied by various metrology to collect data as basis for safety assessment. T2 - PATRAM 2010 - 16th International symposium on the packaging and transport of radioactive materials CY - London, UK DA - 2010-10-03 KW - Waste container KW - Drop test KW - Concrete target PY - 2010 SP - 1 EP - 8 (Paper 367) AN - OPUS4-27045 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Karsten A1 - Scheidemann, Robert A1 - Auster, Jürgen T1 - Mechanical testing of component size specimen under dynamic impact conditions T2 - ASME PVP 2013, Pressure Vessel and Piping Conference CY - Paris, France DA - 2013-07-14 PY - 2013 AN - OPUS4-29769 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kupsch, Andreas A1 - Lange, Axel A1 - Hentschel, Manfred P. A1 - Onel, Yener A1 - Wolk, Thomas A1 - Staude, Andreas A1 - Ehrig, Karsten A1 - Müller, Bernd R. A1 - Bruno, Giovanni T1 - Evaluating porosity in cordierite diesel particulate filter materials, part 1 X-ray refraction N2 - Bi-continuous porous ceramics for filtration applications possess a particularly complicated microstructure, with porosity and solid matter being intermingled. Mechanical, thermal, and filtration properties can only be precisely estimated if the morphology of both solid matter and porosity can be quantitatively determined. Using x-ray absorption and refraction, we quantitatively evaluate porosity and pore orientation in cordierite diesel particulate filter ceramics. Porosity values turn out to agree with mercury intrusion measurements, while pore orientation factors agree with published crystallographic texture data. KW - Porous ceramics KW - Pore orientation KW - X-ray refraction KW - Synchrotron KW - Interface PY - 2013 U6 - https://doi.org/10.4416/JCST2013-00021 SN - 2190-9385 VL - 4 IS - 4 SP - 169 EP - 176 PB - Göller CY - Baden-Baden AN - OPUS4-29939 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Karsten A1 - Scheidemann, Robert A1 - Auster, Jürgen T1 - Mechanical testing of component size specimen under impact conditons N2 - For validation of structural integrity under normal and hypothetical accident conditions during transport and storage of radioactive material the Federal Institute for Materials Research and Testing (BAM) focuses its safety related scientific research on advanced mechanical safety assessment methods including simulation of high rate impact of model components and structures. A drop and crash test facility with an unyielding target and a load capacity of 1.200 kg was designed for materials testing of component size specimen under impact conditions at elevated and higher loading rates. The maximum drop height is 12 meters which enables impact velocities up to 15 m/s. An exactly falling test object or drop weight allows impact, bending, compression as well as crash and crush tests with maximum input energy of 118 kJ. An arresting unit has been developed to avoid multiple impacts during instrumented drop tests. The paper presents experimental techniques and examples of various measurement methods and advancements in order to assess assumption of materials and components behavior by definite displacement and stresses within mechanical testing. Instrumented drop weight tests are performed to complete materials data base and energy absorption of shock-absorbing materials and structures as well as to implement materials and structural parameters into FEA of reference structures. Furthermore, fracture mechanics parameters of thick walled DCI containers by means of dynamic bending tests are characterized by crack initiation and crack resistance behavior at the lowest operational temperature depending on the strain rate. T2 - PVP2013 - ASME 2013 Pressure vessels & piping division conference CY - Paris, France DA - 14.07.2013 KW - Component size KW - Impact test KW - Dynamic compression KW - J-integral PY - 2013 U6 - https://doi.org/10.1115/PVP2013-98000 IS - PVP2013-98000 SP - 1 EP - 7 AN - OPUS4-28893 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Lengas, Nikolaos A1 - Schlick-Hasper, Eva A1 - Müller, Karsten A1 - Neitsch, Marcel A1 - Johann, Sergej A1 - Zehn, M. T1 - Development of an analysis and testing concept for the evaluation of impact targets in the mechanical safety testing of dangerous goods packagings N2 - The mechanical and geometrical properties of impact targets greatly influence the outcome of a drop test. The International Agreement concerning the International Carriage of Dangerous Goods by Road (ADR) as well as ISO 2248 describe the characteristics of impact targets for drop tests of dangerous goods packagings. According to these regulations, the impact target’s surface needs to be unyielding, under testing conditions non-deformable, flat, and integral with a mass at least 50 times that of the heaviest packaging to be tested. The problem is that many production facilities, especially manufacturers of corrugated fibreboard boxes, do not have their own testing device with the required 50 times mass ratio of the impact target for a regulation compliant drop test during series production. Furthermore, at UN level it is considered necessary to revise these requirements. In the present paper, the impact target requirements are examined in detail and compared with those in other technical areas (e.g., impact target for container for the transport of radioactive materials). A research method is being developed to investigate the dependency between the mass ratio of the packaging and the target as well as the damage resistance of a drop tested package in relation to specific design characteristics. The results are of high relevance for industry purposes and intended to ensure a uniform level of safety assessment for the mechanical testing of dangerous goods packagings. KW - Corrugated fibreboard boxes KW - Dangerous goods packagings KW - Drop test KW - Impact target KW - Structural dynamics PY - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:b43-549660 SN - 0894-3214 SN - 1099-1522 VL - 35 IS - 9 SP - 689 EP - 700 PB - Wiley CY - New York, NY AN - OPUS4-54966 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Karsten A1 - Rockland, Ulrike A1 - Weingart, Barbara T1 - Experimentelle Untersuchungen von Transport- und Lagerbehältern für radioaktive Stoffe N2 - Methoden der Bauartprüfung und –zulassung von Behältern für radioaktive Stoffe, Sicherheitsnachweis von RAM –Behältern; Versuchstechnische Anlagen der BAM für Gefahrgutverpackungen im Originalmaßstab; Durchführung experimenteller Untersuchungen mit Transport- und Lagerbehältern für radioaktive Stoffe; Fallprüfungen mit Prüfmustern und Modellbehältern; Beanspruchungsanalyse von Behälterkomponenten und Sicherheitsbewertung der Behälterkonstruktion; Vorstellung der BAM und des Testgeländes Technische Sicherheit N2 - BAM as competent German government institute for the mechanical and thermal testing of radioactive material transport and storage containers operates unique drop and fire test facilities for experimental investigations on an open-air Test Centre Technical Safety, BAM TTS. To be able to perform even drop tests with full-scale spent fuel casks BAM operates a large drop test facility capable to handle 200 tons test objects, and to drop them onto a steel plate covered unyielding target with a mass of approximately 2,600 tons. Examples of drop testing of full-scale test models (181 ton CONSTOR V/TC, 127 ton MSF prototype, various cubic containers for radioactive waste) as well as testing of reduced-scale models and component-size tests are briefly presented. The mechanical testing activities at BAM TTS are supported by a open-air drop tower for packages for dangerous goods with load capacity up to 50 tons and by guided impact testing inside a drop test machine up to a object mass of 1,000 kg. Furthermore, the fire test facility at the BAM TTS provides two test stands fired with liquid Propane. Those fire test stands are also designed and operated to meet the requirements of international safety regulations. The thermal test of a thick-walled waste container is shown exemplarily. Within the mechanical package design development assessment not only experimental tests are included, also analytical and numerical examinations like detailed stress calculation of the original cask design by verified FE models are performed by BAM. T2 - Arbeitstreffen A26: Sicherheit und Sicherung bei der Beförderung radioaktiver Stoffe CY - BAM Testgelände Technische Sicherheit, Horstwalde, Germany DA - 06.07.2016 KW - Transportbehälter KW - Radioaktiv KW - Material KW - Gefahrgut KW - Fallversuch KW - Lagercontainer PY - 2016 AN - OPUS4-36855 LA - mul AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Onel, Yener A1 - Lange, Axel A1 - Staude, Andreas A1 - Ehrig, Karsten A1 - Kupsch, Andreas A1 - Hentschel, Manfred P. A1 - Wolk, Thomas A1 - Müller, Bernd R. A1 - Bruno, Giovanni T1 - Evaluating porosity in cordierite Diesel particulate filter materials, Part 2 statistical analysis of computed tomography data N2 - Complementary to Part 1 of this work, the bi-continuous microstructure of porous synthetic cordierite ceramics for filtration applications was investigated using 3D x-ray computed tomography at different resolutions. Applying both Fast Fourier Transform and a newly developed image analysis algorithm, we quantitatively evaluated porosity and pore orientation. The statistical approach allows extraction of spatially resolved or average values. Porosity values based on x-ray absorption agree with mercury intrusion measurements, while pore orientation factors agree with x-ray refraction data (Part 1 of this work), and with published crystallographic texture data. KW - Pore orientation KW - Porous ceramics KW - Computed tomography KW - 3D microstructure PY - 2013 U6 - https://doi.org/10.4416/JCST2013-00022 SN - 2190-9385 VL - 05 IS - 01 SP - 13 EP - 22 PB - Göller CY - Baden-Baden AN - OPUS4-30379 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Quercetti, Thomas A1 - Ballheimer, Viktor A1 - Droste, Bernhard A1 - Müller, Karsten T1 - Internal cask content collisions during drop test of transport casks for radioactive materials N2 - In transport casks for radioactive materials, significantly large axial and radial gaps between cask and internal content are often present because of certain specific geometrical dimensions of the content (e.g. spent fuel elements) or thermal reasons. The possibility of inner relative movement between content and cask will increase if the content is not fixed. During drop testing, these movements can lead to internal cask content collisions, causing significantly high loads on the cask components and the content itself. Especially in vertical drop test orientations onto a lid side of the cask, an internal collision induced by a delayed impact of the content onto the inner side of the lid can cause high stress peaks in the lid and the lid bolts with the risk of component failure as well as impairment of the leak tightness of the closure system. This paper reflects causes and effects of the phenomenon of internal impact on the basis of experimental results obtained from instrumented drop tests with transport casks and on the basis of analytical approaches. Furthermore, the paper concludes the importance of consideration of possible cask content collisions in the safety analysis of transport casks for radioactive materials under accident conditions of transport. KW - Drop test KW - Cask KW - Internal collision KW - Transport KW - Radioactive material PY - 2013 U6 - https://doi.org/10.1179/1746510913Y.0000000032 SN - 1746-5095 SN - 1746-5109 SN - 0957-476X VL - 24 IS - 2 SP - 75 EP - 82 PB - Ramtrans Publ. CY - Ashford AN - OPUS4-31306 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bruno, Giovanni A1 - Ehrig, Karsten A1 - Haarring, Holger A1 - Harwardt, Michael A1 - Hentschel, Manfred P. A1 - Illerhaus, Bernhard A1 - Kupsch, Andreas A1 - Lange, Axel A1 - Meinel, Dietmar A1 - Müller, Bernd R. A1 - Onel, Yener A1 - Staude, Andreas A1 - Wolk, Thomas T1 - Industrial and synchrotron X-ray CT applications for materials characterisation N2 - The combination of tomographic, microstructural data with other experimental techniques and with modeling is paramount, if we want to extract the maximum amount of information on material and component properties. In particular, quantitative image analysis, statistical approaches, direct discretization of tomographic reconstructions represent concrete possibilities to extend the power of the tomographic 3D representation to insights into the material and component performance. This logic thread holds equally for industrial and academic research, and valorizes expensive experiments such as those carried out at synchrotron sources, which cannot be daily repeated. We shall show a few examples of possible use of X-ray tomographic data for quantitative assessment of damage evolution and microstructural properties, as well as for non-destructive testing. We will also show how X-ray refraction computed tomography (CT) can be highly complementary to classic absorption CT, being sensitive to internal interfaces. T2 - iCT Conference 2014 - Conference on industrial computed tomography CY - Wels, Austria DA - 25.02.2014 KW - X-ray absorption and refraction CT KW - Quantitative image analysis KW - Statistical analysis KW - Complex microstructure PY - 2014 SN - 978-3-8440-2557-6 SP - 15 EP - 31 PB - Shaker CY - Aachen AN - OPUS4-30484 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bruno, Giovanni A1 - Hentschel, Manfred P. A1 - Onel, Yener A1 - Lange, Axel A1 - Kupsch, Andreas A1 - Wolk, Thomas A1 - Staude, Andreas A1 - Ehrig, Karsten A1 - Müller, Bernd R. T1 - Bewertung von Porositätsparametern in Cordierit-Diesel-Partikelfilter-Materialien mit fortgeschrittenen Röntgenverfahren und statistischer Analyse N2 - Bikontinuierliche poröse Keramiken für Filteranwendungen weisen eine komplizierte Mikrostruktur auf, in der Poren und Festkörperphase 'vermischt' sind. Mechanische, thermische sowie Filtereigenschaften können nur präzise bestimmt werden, wenn die Morphologie beider Phasen quantitativ angegeben werden kann. Hier werden unter Anwendung von 3D Computertomographie (CT) und verschiedenen Techniken, die auf der Röntgenrefraktion basieren, die Porosität und die Porenorientierung in keramischen Cordierit-Dieselpartikelfiltern bewertet. Dabei werden zur Auswertung der Tomogramme die Fouriertransformierten sowie eine neu entwickelte richtungssensitive Bildanalyse (DIVA, directional interface variance analysis) angewandt. Sowohl die genannten Messtechniken als auch der statistische Ansatz gestatten die Extraktion optional ortsaufgelöster oder gemittelter Werte. Es ergeben sich sehr gute Übereinstimmungen der experimentell ermittelten Porositätswerte mit Ergebnissen aus Quecksilberintrusionsversuchen als auch der ermittelten Porenorientierung im Vergleich zu publizierten Angaben zur kristallographischen Textur. Dies legt den Schluss nahe, dass die Kenntnis der Grenzflächen (zwischen Poren und Materie) genügt, die morphologischen Eigenschaften solcher Materialien hinreichend zu beschreiben. T2 - DGZfP-Jahrestagung 2014 CY - Potsdam, Germany DA - 26.05.2014 KW - Cordierit KW - Poröse Keramik KW - Porenorientierung KW - Röntgenrefraktion KW - Computer-Tomographie KW - 3D-Mikrostruktur PY - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:b43-312946 SN - 978-3-940283-61-0 VL - 148 SP - 1 EP - 8 PB - Deutsche Gesellschaft für Zerstörungsfreie Prüfung (DGZfP) CY - Berlin AN - OPUS4-31294 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kupsch, Andreas A1 - Lange, Axel A1 - Hentschel, Manfred P. A1 - Onel, Yener A1 - Wolk, Thomas A1 - Staude, Andreas A1 - Ehrig, Karsten A1 - Müller, Bernd R. A1 - Bruno, Giovanni T1 - Evaluating porosity in cordierite diesel particulate filter materials: advanced X-ray techniques and new statistical analysis methods N2 - Bi-continuous porous ceramics for filtration applications possess a particularly complicated microstructure, whereby porosity and solid matter are intermingled. Mechanical, thermal, and filtration properties can only be precisely estimated if the morphology of both solid matter and porosity can be quantitatively determined. Using 3D computed tomography (CT) at different resolutions, and several X-ray refraction-based techniques, we quantitatively evaluated porosity and pore orientation in cordierite diesel particulate filter ceramics.Moreover, applying both Fast Fourier Transform (FFT) and a newly developed image analysis algorithm (directional interface variance analysis, DIVA), we quantitatively evaluated porosity and pore orientation. Both the experimental techniques and the statistical approach allow extraction of spatially resolved or average values.Porosity values from synchrotron computed tomography used turn out to agree with mercury intrusion measurements, while pore orientation factors agree with published crystallographic texture data. This latter point also implies that the study of the pore/matter interface is sufficient to describe the morphological properties of these materials. KW - Diesel particulate filters KW - DIVA Algorithm KW - Pore Orientation KW - Porous Ceramics KW - X-Ray Computed Tomography KW - X-Ray Refraction PY - 2014 U6 - https://doi.org/10.4028/www.scientific.net/AST.91.64 SN - 1662-0356 VL - 91 SP - 64 EP - 69 PB - Techna CY - Faenza AN - OPUS4-32069 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auster, Jürgen A1 - Neumeyer, Tino A1 - Müller, Karsten A1 - Droste, Bernhard T1 - Leakage testing during lateral displacement of metallic seals under mechanical accident impact T2 - PATRAM 2013 - 17th International symposium on the packaging and transportation of radioactive materials CY - San Francisco, CA, USA DA - 2013-08-18 PY - 2013 SP - Paper 168, 1 EP - 6 PB - Omnipress AN - OPUS4-30282 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Karsten T1 - Quality Assurance Requirements for Mechanical test campaigns of Packagings T2 - 17th International Symposium on the Packaging and Transport of Radioactive Materials (PATRAM 2013) CY - San Francisco, CA, USA DA - 2013-08-18 PY - 2013 AN - OPUS4-30273 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kupsch, Andreas A1 - Lange, Axel A1 - Hentschel, Manfred P. A1 - Bruno, Giovanni A1 - Onel, Yener A1 - Wolk, Thomas A1 - Staude, Andreas A1 - Ehrig, Karsten A1 - Müller, Bernd R. T1 - Evaluating porosity in cordierite diesel particulate filter materials: advanced X-ray techniques and new statistical analysis methods T2 - ECNDT 2014 - 11th European conference on non-destructive testing CY - Prague, Czech Republic DA - 2014-10-06 KW - Porous ceramics KW - Diesel particulate filters KW - Pore orientation KW - X-ray computed tomography KW - X-ray refraction KW - DIVA algorithm KW - Phase contrast KW - Edge artefact KW - Soft matter radiography KW - Wavelet transform KW - Huygens elementary waves PY - 2014 SN - 978-80-214-5018-9 SP - 1 EP - 8(?) AN - OPUS4-31973 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -