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Fracture mechanics safety assessment based on mechanics of materials
Author(s) -
Roos Eberhard,
Demler Thomas,
Eisele Ulrich,
Gillot Rainer
Publication year - 1990
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199000328
Subject(s) - piping , fracture mechanics , fracture toughness , mechanics , materials science , linear elasticity , creep , toughness , fracture (geology) , pressure vessel , structural engineering , composite material , engineering , mechanical engineering , physics , finite element method
In order to determine the influence of the test temperature on the fracture mechanics characteristics for static and dynamic initiation, crack growth, and arrest, investigations were carried out on pressure vessel and piping steels of different toughness and strength. The selected temperature range allowed both linear‐elastic and elastic‐plastic material behaviour to be examined. In the regime of linear‐elastic fracture mechanics (LEFM) the conservatism of the reference curves of American and German guidelines could be demonstrated. In the upper shelf, where elastic‐plastic fracture mechanics (EPFM) parameters have to be applied, toughness‐dependent overestimations of the real material properties result from the application of the reference curves.