Dokument-ID Dokumenttyp Autoren/innen Persönliche Herausgeber/innen Haupttitel Abstract Auflage Verlagsort Verlag Herausgeber (Institution) Erscheinungsjahr Titel des übergeordneten Werkes Jahrgang/Band ISBN Veranstaltung Veranstaltungsort Beginndatum der Veranstaltung Enddatum der Veranstaltung Ausgabe/Heft Erste Seite Letzte Seite URN DOI Lizenz Datum der Freischaltung OPUS4-28620 Beitrag zu einem Tagungsband Heckel, Thomas; Zerbst, Uwe Einfluss von Save Life- und Schadenstoleranzkonzepten auf die ZfP von Eisenbahnradsatzwellen Deutsche Gesellschaft für zerstörungsfreie Prüfung e.V. (DGZfP) 2013 DGZfP-Jahrestagung 2013 978-3-940283-49-8 DGZfP-Jahrestagung 2013 Dresden, Germany 2013-05-06 2013-05-08 Mi.1.A.1 1 7 2016-02-20 OPUS4-29537 Beitrag zu einem Tagungsband Zerbst, Uwe; Madia, Mauro Yu, S.; Feng, X.-Q. Fracture mechanics model for predicting fracture strength of metallic alloys containing large second phase particles An analytical fracture mechanics model for predicting the finite life fatigue strength of components is presented which Combines a number of well established and newly developed approaches such as Murakami's and McEvily's approach for describing the transient behaviour of crack closure of short cracks, the analytical (long) crack closure function of Newman, the R6 procedure modified by a method for improving the ligament yielding correction proposed by the authors and other elements. Basic assumption is the preexistence of initial flaws such that the crack initiation or nucleation stage is small and can be neglected. The application of the model is demonstrated for small tension plates of aluminium Al 5380 H321 with artificial initial defects generated by FIB technology, the size of which was fixed on the basis of fractographic investigations on broken, smooth specimens. 2013 ICF13 - 13th International conference on fracture (Proceedings) 978-988-12265-2-5 ICF13 - 13th International conference on fracture Beijing, China 16.06.2013 21.06.2013 1 12 2016-02-20 OPUS4-29651 Beitrag zu einem Tagungsband Klingbeil, Dietmar; Zerbst, Uwe; Klinger, Christian Yu, S.; Feng, X.-Q. Safe life and damage tolerance concepts of railway axles On July 9, 2008 a high speed train derailed in Cologne main Station, Germany at a low speed because an axle was broken. Fortunately, the derailment happened at a low speed so that nobody was injured. The reason for the broken axle was investigated and it turned out that most likely large inclusions located shortly undemeath the surface in a T-transition were the origin of the final crack. Basing on that result, a systematic investigation on existing safety assessments of railway axles was performed. This results in an analysis of the production process of axles and in a critical review of existing of existing assessments. Improvements and future developments are outlined. 2013 ICF13 - 13th International conference on fracture (Proceedings) 978-988-12265-2-5 ICF13 - 13th International conference on fracture Beijing, China 16.06.2013 21.06.2013 1 10 2016-02-20 OPUS4-30175 Beitrag zu einem Tagungsband Komann, Steffen; Kiyak, Yusuf; Wille, Frank; Zerbst, Uwe; Weber, Mike; Klingbeil, Dietmar Assessment of ductile cast iron fracture mechanics analysis within licensing of German transport packages In the design approval of transport packages for radioactive materials, the mechanical and thermal safety assessment is carried out in Germany by competent authority BAM. In recent years BAM was involved in several licensing procedures of new spent fuel and HLW package designs, where the cask body is of Ductile Cast Iron (DCI). According to IAEA regulations package designs have to fulfill requirements for specific conditions of transport. Type B(U) packages must withstand the defined accident conditions of transport. The temperature range from -40°C up to the operational temperature has to be considered. For the cask material DCI, it is necessary to determine safety against brittle fracture. The German guideline BAM-GGR 007 defines requirements for fracture mechanics of packagings made of DCI. Due to complex cask body structure and the dynamic loading a fracture mechanical assessment by analytical approaches is not always possible. Experience of recent design approval procedures show that the application of numerical calculations are applicable to determine the stresses and stress intensity factors in the cask body. At the first step a numerical analysis has to be done to identify the loading state at the whole cask body. Secondly an analysis of a detail of the cask body is made considering the displacement boundary conditions of the global model. An artificial flaw is considered in this detailed model to calculate the fracture mechanical loading state. The finite element mesh was strongly refined in the area of the flaw. The size of the artificial flaw is based on the ultrasonic inspection acceptance criteria applied for cask body manufacture. The applicant (GNS) developed additional analysis tools for calculation of stress intensity factor and/or J-Integral. The assessment approach by BAM led to the decision to develop own tools to the possibility for independent proof of the results. The paper describes the authority assessment approach for DCI fracture mechanics analysis. The validation procedure incl. the development of own tools is explained. BAM developed a postprocessor to determine the fracture mechanical loads. A horizontal 1 m puncture bar drop test is used to give a detailed description of the assessment procedure. Omnipress Institute of Nuclear Materials Management (INMM) 2013 PATRAM 2013 - 17th International symposium on the packaging and transportation of radioactive materials (Proceedings) PATRAM 2013 - 17th International symposium on the packaging and transportation of radioactive materials San Francisco, CA, USA 18.08.2013 23.08.2013 1 10 2016-02-20 OPUS4-29458 Beitrag zu einem Tagungsband Zerbst, Uwe; Klinger, Christian Anmerkungen zur Auslegung und zum sicheren Betrieb von Radsatzwellen aus der Sicht von Betriebsfestigkeit und Bruchmechanik Die Sicherheit von Radsatzwellen beruht gegenwärtig auf zwei Säulen: der Schwingfestigkeitsauslegung und periodischen Inspektionen. Ausgehend von einem Schadensfall, der gebrochenen ICE 3-Welle von Köln, 2008, sollen ausgewählte Aspekte beider Säulen diskutiert und Vorschläge zur weiteren Verbesserung gemacht werden. Diese betreffen u.a. Fragen einer Betriebszeitbegrenzung, Veränderungen der Schwingfestigkeit während des Betriebs infolge von Korrosion und Steinschlag, den Einfluss von Korrosion auf Schwingrissinitiierung und -fortschritt, den potentiellen Einfluss nichtmetallischer Einschlüsse auf die Schwingfestigkeit, die Möglichkeiten sie im Rahmen der Qualitätssicherung zu detektieren sowie Fragen der Bruchmechanik und der Zuverlässigkeit zerstörungsfreier Schwingriss-Prüfverfahren im Rahmen eines Konzepts regelmäßiger Inspektionen. Deutscher Verband für Materialforschung und -prüfung e.V. (DVM) 2013 40. Tagung des DVM-Arbeitskreises Betriebsfestigkeit - Die Betriebsfestigkeit als eine Schlüsselfunktion für die Mobilität der Zukunft 140 40. Tagung des DVM-Arbeitskreises Betriebsfestigkeit Herzogenaurach, Germany 09.10.2013 10.10.2013 69 80 2016-02-20