TY - CONF A1 - Qiao, Linan A1 - Herbrich, Uwe A1 - Nagelschmidt, Sven A1 - Keller, Christian T1 - A New Time-Temperature Equivalent Formulation for the Description of Thermo-rheologically Complex Behaviour T2 - IC-RMM4 - 4th International Conference on Rheology and Modeling of Materials N2 - Compared with the original time-temperature superposition (TTS) principle, an extended non-linear time-temperature equivalent (TTE) principle is suggested in this work. Results shown us, all application of TTS and most of the TTE parameters, for example, the Orr-Sherby-Dorn, Manson-Succop, Larson-Müller, Manson-Haferd, Mendelson-Roberts-Manson parameters and the more general ‘single metamodel’ from Haque–Stewart are special cases of the new suggested principle. The merits of this new method are discussed. T2 - 4th International Conference on Rheology and Modeling of Materials CY - Miskolc-Lillafüred, Hungary DA - 07.10.2019 KW - Scale/shift factor and form/stretchFactor of time-temperature relation KW - Time-temperature superposition/equivalent principle KW - Thermo-rheologically simple/complex behaviour PY - 2019 AN - OPUS4-50772 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marotzke, Christian A1 - Qiao, Linan T1 - Analyse von Grenzflächenrissen in Faserverbundwerkstoffen T2 - 30. Tagung des DVM-Arbeitskreises Bruchvorgänge (DVM-Bericht 230) T2 - 30. Tagung des DVM-Arbeitskreises Bruchvorgänge CY - Dresden, Deutschland DA - 1998-02-17 PY - 1998 SN - 0943-3473 IS - 230 SP - 459 EP - 468 PB - DVM CY - Berlin AN - OPUS4-6376 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marotzke, Christian A1 - Qiao, Linan T1 - Analysis of fiber, matrix and interface fracture in composites and fragmentation tests T2 - Composites (Proceedings) T2 - 9th ECCM ; 9th [European Conference on Composite Materials] CY - Brighton, England, UK DA - 2000-06-04 KW - Interface crack KW - Energy release rate KW - Fracture mechanics KW - Debonding KW - Thermal stresses KW - Friction KW - Finite element method KW - FEM PY - 2000 N1 - Serientitel: CF / IOM Communications Ltd – Series title: CF / IOM Communications Ltd IS - 11 SP - 1 EP - 10(?) PB - IOM Communications CY - London AN - OPUS4-6808 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nagelschmidt, Sven A1 - Herbrich, Uwe A1 - Qiao, Linan T1 - Applicability of developed calculation models to predict long-term behavior of metal seals – Necessary scope of tests T2 - Waste Management Symposia - WM2019 Conference N2 - The long-term sealing behavior of metal seals, assembled in the lid system of casks for transportation and storage of radioactive materials, has been investigated. For that purpose, phenomenological models describing the time- and temperature dependent behavior have been introduced by BAM since 2016, e.g. by using the time-temperature superposition principle. Results have shown that these models describe the relaxation behavior adequately and are suitable for extrapolations. In this work, the applicability of these models is checked by analyzing the necessary scope of tests, which must be carried out to get sufficient information about the long-term behavior of metal seals based on short-term tests. T2 - Waste Management Conference CY - Phoenix, Arizona, USA DA - 03.03.2019 KW - Metal seal KW - Time-temperature superposition principle KW - Transportation and storage cask KW - Long-term interim storage PY - 2019 SP - 19311, 1 EP - 6 AN - OPUS4-48353 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zencker, Uwe A1 - Qiao, Linan A1 - Weber, Mike A1 - Kovacs, Oliver A1 - Droste, Bernhard T1 - Application limits of low-ductile cast iron for radioactive waste containers T2 - PATRAM 2007 - 15th International symposium on the packaging and transportation of radioactive materials (Proceedings) T2 - PATRAM 2007, 15th International Symposium on the Packaging and Transportation of Radioactive Materials CY - Miami, Florida, USA DA - 2007-10-21 KW - Ductile iron KW - Container design KW - Safety assessment KW - Fracture mechanics KW - Dynamic loading conditions PY - 2007 IS - Session B, Paper #97 SP - 1 EP - 8 PB - Institute of Nuclear Materials Management AN - OPUS4-18399 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Qiao, Linan A1 - Nagelschmidt, Sven A1 - Herbrich, Uwe T1 - Application of a Modified Arrhenius Equation to Describe the Time-Temperature Equivalence in Relaxation Analysis of Metal Seals JF - Journal of Civil Engineering and Architecture N2 - For the application of the time-temperature superposition principle a suitable relation is needed to describe the time-temperature shift factor α. Therefore, the Arrhenius equation is widely used due to its simple form and often leads to suitable results. Where, the Arrhenius equation presents a linear relation for the temperature-dependent shift factor in logarithmic scale ln(α) with the absolute inverse temperature (1/ϑ). However, in cases with a large temperature range which eventually include more complex reaction processes, the functional relation between ln(α) and (1/ϑ) is nonlinear in the ‘Arrhenius plot’. In those cases, the monotone change of the nonlinear range in the ‘Arrhenius plot’ can be interpreted as a transient range between two approximately linear or constant regions. An extended application of the modified Arrhenius equation from Nakamura (1989) is presented in this study for this transient range. The introduced method was applied to describe the time-temperature equivalence in the relaxation analysis of restoring seal force of metal seals, which are used in lid-systems of transport and interim storage casks for radioactive materials. But, the method is widely valid and can be used for different objectives which are characterized by thermorheologically simple behavior with nonlinear sensitivity to inverse temperature. KW - Metal seals KW - TTS principle KW - Arrhenius equation KW - Non-linear Arrhenius behavior KW - Relaxation analysis KW - Seal force PY - 2017 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-446759 UR - http://www.davidpublisher.org/index.php/Home/Article/index?id=33931.html DO - https://doi.org/10.17265/1934-7359/2017.09.004 SN - 1934-7359 VL - 11 IS - 9 SP - 853 EP - 861 PB - David Publishing Company CY - USA, NY 10989, Valley Cottage AN - OPUS4-44675 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zencker, Uwe A1 - Qiao, Linan A1 - Droste, Bernhard T1 - Assessment of dynamically loaded cracks in fillets T2 - Advanced fracture mechanics for life and safety assessments N2 - Practical methods for the safety assessment of postulated crack-like material defects of cubic containers made of ductile cast iron are presented. A formula for the stress intensity factor of a crack in a fillet with a radius from 20 to 200 mm under static load conditions is given. From that, an assessment diagram is derived for the critical depth of a crack in a fillet. The formula may be used to estimate the stress intensity factor of a dynamically loaded crack for special cases. As an application the results of the estimation procedure are compared with the results of a dynamic finite element calculation. T2 - 15th European Conference of Fracture CY - Stockholm, Sweden DA - 2004-08-11 KW - Ductile cast iron KW - Container design KW - Safety assessment KW - Fracture mechanics KW - Dynamic load conditions PY - 2004 UR - http://www.structuralintegrity.eu/pdf/esis/Documents/Conference/ECF/15/Zencker%20U%20et%20al.pdf SP - 1 EP - 8(?) CY - Stockholm AN - OPUS4-3763 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zencker, Uwe A1 - Qiao, Linan A1 - Droste, Bernhard T1 - Assessment of dynamically loaded surface cracks in cubic containers T2 - Transportation of radioactive materials - the vital link T2 - 13th International Conference on Packaging and Transportation of Radioactive Materials ; PATRAM 2001 CY - Chicago, IL, USA DA - 2001-09-03 PY - 2001 IS - CD-ROM PB - PATRAM CY - Chicago, Ill. AN - OPUS4-1889 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zencker, Uwe A1 - Weber, Mike A1 - Qiao, Linan A1 - Menzel, Martin A1 - Droste, Bernhard T1 - Beurteilungsmethoden für Transport- und Lagerbehälter mit erhöhten metallischen Reststoffanteilen - Behälterbruchsicherheitsuntersuchungen und Entwicklung eines KONRAD-Referenzprüfstandfundamentes T2 - 9. Internationales Symposium "Konditionierung radioaktiver Betriebs- und Stilllegungsabfälle" (KONTEC 2009) - Proceedings T2 - 9. Internationales Symposium "Konditionierung radioaktiver Betriebs- und Stilllegungsabfälle" (KONTEC 2009) CY - Dresden DA - 2009-04-15 KW - Duktiles Gusseisen KW - Behälterdesign KW - Sicherheitstechnische Bewertung KW - Bruchmechanik KW - Dynamische Belastungsbedingungen KW - KONRAD KW - Referenzprüfstandfundament PY - 2009 SP - 646 EP - 652 PB - KONTEC CY - Hamburg AN - OPUS4-19396 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Qiao, Linan A1 - Zencker, Uwe A1 - Völzke, Holger T1 - Crushable Foam Model with Pressure and Stress-triaxiality Dependent Damage Mechanisms for Damping Concrete T2 - International Symposium Brittle Matrix Composites BMC-11 T2 - International Symposium Brittle Matrix Composites BMC-11 CY - Warsaw, Poland DA - 2015-09-28 PY - 2015 AN - OPUS4-34603 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -