TY - RPRT A1 - Aurich, Dietmar A1 - Baer, Wolfram A1 - Häcker, Ralf A1 - Klingbeil, Dietmar A1 - Ohm, Katrin T1 - Analyse und Weiterentwicklung bruchmechanischer Versagenskonzepte - Schwerpunkt: Anwendung fortgeschrittener zähbruchmechanischer Konzepte; Bruchübergang N2 - Im Rahmen des Teilprojektes 1 "Analyse und Erweiterung der Einsatzgrenzen der elastisch- plastischen Bruchmechanik zu tiefen Temperaturen hin mit der Option der systematischen Nutzung von Zähigkeitspotentialen im Übergangsbereich" wurden an drei Versuchswerkstoffen bei jeweils mehreren Prüftemperaturen Serien von Risswiderstandskurven aufgenommen. Die Arbeiten dienten der quantitativen Erfassung des Übergangs vom Spaltbruch zum Gleitbruch im Bereich nahe Ta mit dem Ziel, Sicherheitsreserven des Werkstoffs in diesem Bereich ausnutzen zu können. Im Rahmen des Teilprojektes 2 "Methoden zur Extrapolation von JR-Kurven für die Vorhersage der Rissöffnungsgeometrie unter postulierten Belastungen" wurden experimentelle Untersuchungen an Rohren aus dem Werkstoff 15NiCuMoNb5 (WB36) durchgeführt. Für die Rohrbiegeversuche wurde ein Prüfstand aufgebaut, auf dem bei Raumtemperatur Vierpunkt- Biegeversuche an Rohren mit unterschiedlichen Außenumfangsfehlergeometrien durchgeführt wurden. Mit Hilfe der zerstörungsfreien Verfahren Ultraschallprüfung, Schallemissionsprüfung, Gleichstrompotentialsondenverfahren und optische Analyse wurde das Risswachstums- und Leckageverhalten unter den komplexen Bedingungen der Rohrversuche quantitativ untersucht und detailliert vergleichend ausgewertet. T3 - BAM Forschungsberichtreihe - 232 PY - 1999 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-2187 SN - 978-3-89701-339-8 SN - 0938-5533 VL - 232 SP - 1 EP - 256 PB - Wirtschaftsverlag NW CY - Bremerhaven AN - OPUS4-218 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - 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 T2 - Transactions of the SMIRT 17 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 - JOUR A1 - Baer, Wolfram A1 - Klingbeil, Dietmar T1 - Werkstoffprüfung bei Hochgeschwindigkeitsbeanspruchung JF - Materials and corrosion KW - Werkstofftechnik KW - Hochgeschwindligkeitsbeanspruchung KW - Crash PY - 2003 DO - https://doi.org/10.1002/maco.200390134 SN - 0947-5117 SN - 1521-4176 VL - 54 IS - 8 SP - 612 EP - 617 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-2860 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Baer, Wolfram A1 - Klingbeil, Dietmar ED - Fuentes, M. T1 - Experimental and numerical investigations of the failure behaviour of components by application of fracture and damage mechanics T2 - Fracture mechanics T2 - 13th European Conference on Fracture CY - San Sebastián, Spain DA - 2000-09-06 PY - 2000 SN - 0-08-043699-4 SN - 1566-1369 N1 - Serientitel: ESIS publication – Series title: ESIS publication IS - 26 SP - 1(?) EP - 8(?) PB - Elsevier CY - Amsterdam AN - OPUS4-840 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 - Transferability of fracture mechanical characteristics 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 - GEN A1 - Baer, Wolfram A1 - Klingbeil, Dietmar A1 - Häcker, Ralf A1 - Wossidlo, Peter A1 - Aurich, Dietmar ED - Neimitz, A. T1 - Investigations on the Assessment of the Toughness Behaviour in the upper Ductile-to-Brittle Transition Range T2 - Fracture mechanics beyond 2000 / Vol. 3 T2 - 14th European Conference on Fracture ; 14th Biennial Conference on Fracture (ECF-14) CY - Cracow, Poland DA - 2002-09-08 PY - 2002 SN - 1-901537-38-2 VL - 3 SP - 185 EP - 192 PB - EMAS Publ. CY - Sheffield AN - OPUS4-1926 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Klingbeil, Dietmar A1 - Eberle, Arno A1 - Baer, Wolfram A1 - Wossidlo, Peter A1 - Häcker, Ralf ED - François, D. ED - Pineau, A. T1 - The calculation of dynamic JR-curves from 2D and 3D finite element analyses of a charpy test using a rate-dependent damage model T2 - From Charpy to present impact testing T2 - Charpy Centenary Conference CY - Poitiers, France DA - 2001-01-02 PY - 2001 SN - 0-08-043970-5 SN - 1566-1369 N1 - Serientitel: ESIS publication – Series title: ESIS publication IS - 30 SP - 403 EP - 410 PB - Elsevier CY - Amsterdam AN - OPUS4-1928 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Baer, Wolfram A1 - Klingbeil, Dietmar ED - Bouchaud, E. T1 - Complex Component Failure with Large Ductile Crack Growth - High Quality Prediction by Damage Mechanical Simulation and Experimental Verification T2 - Physical aspects of fracture (International journal of fracture 121.2003,1/2 : Special issue) T2 - 10th International Conference on Fracture (ICF-10) CY - Honolulu, HI, USA DA - 2001-12-02 PY - 2003 SN - 0376-9429 VL - 121 IS - 1-2 SP - 1(?) EP - 6(?) PB - Kluwer Acad. Publ. CY - Dordrecht AN - OPUS4-1929 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 - Transportation of radioactive materials - the vital link 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 - Fracture mechanics beyond 2000 / Vol. 2 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 -