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GROWTH OF SEMI‐ELLIPTICAL SURFACE CRACKS IN FERRITIC STEEL PLATES UNDER CYCLIC THERMAL SHOCK LOADING
Author(s) -
Bethge K.,
Munz D.,
Stamm H.
Publication year - 1988
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1988.tb01397.x
Subject(s) - materials science , thermal shock , composite material , pressure vessel , paris' law , thermal , stress intensity factor , jet (fluid) , crack closure , thermal fatigue , shock (circulatory) , homogeneous , fracture mechanics , cyclic stress , fracture (geology) , structural engineering , metallurgy , mechanics , thermodynamics , medicine , physics , engineering
— Investigations of crack growth under thermal fatigue loading are presented. The experiments were performed with a ferritic reactor pressure vessel steel. A plate, containing a semi‐elliptical surface crack is heated up to a homogeneous temperature and cyclically cooled down by a jet of cold water. On the basis of linear elastic fracture mechanics, stress‐intensity factors are calculated with the weight function method. The prediction of crack growth under thermal fatigue loading using data from standard specimens is compared with the experimental result.