Methoden zur betriebsfesten Bauteilvorbemessung von innendruckbeaufschlagten Bauteilen aus hochfesten Eisengusswerkstoffen |
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| Authors: | S. Schönborn H. Hanselka R. Wagener H. Kaufmann |
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| Affiliation: | 1. Technische Universit?t Darmstadt, Fachgebiet Systemzuverl?ssigkeit und Maschinenakustik SzM, Magdalenenstra?e 4, 64289 Darmstadt;2. Fraunhofer‐Institut für Betriebsfestigkeit und Systemzuverl?ssigkeit LBF, Bartningstra?e 47, 64289 Darmstadt |
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| Abstract: | In the present paper methods based on the related stress gradient χ* and the highly stressed material volume HBV90% for the assessment of the structural durability of high‐strength ductile iron components are presented. Approximate solutions were formulated on the basis of extensive fatigue tests under constant amplitude loading using specimens from the alloys EN‐GJS‐500‐7, SiboDur 700‐10 and MADI. The estimated fatigue strengths were validated by tests with the so‐called “Pulsing Dummy Model Bodies”, samples with a bore intersection with an angle of 45° as critical area. |
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| Keywords: | Betriebsfestigkeit Ü bertragbarkeit Spannungsgradient hochbeanspruchtes Werkstoffvolumen Gusseisen Structural durability transferability stress gradient highly stressed volume cast iron |
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