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FATIGUE RESEARCH WITH DISCRIMINATING SPECIMENS
Author(s) -
FUCHS HENRY O.
Publication year - 1979
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.1460-2695.1979.tb01356.x
Subject(s) - torsion (gastropod) , materials science , structural engineering , peening , shear stress , composite material , engineering , residual stress , medicine , surgery
When more than one variable has an effect on fatigue life, a test with a suitably designed specimen can discriminate between theories of interaction as to their correctness. A small number of tests can determine the interaction coefficient. This paper discusses the application of such specimens to discriminate between three theories for out‐of‐phase torsion and bending. It also shows applications of such specimens to determine the increase of bending fatigue strength by peening, to determine the mean stress effect on bending fatigue, and to discriminate between the maximum shear stress and the octahedral shear stress as criteria for in‐phase bending and torsion. The advantages of discriminating specimens are explained.