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COMPLEX STRESS INTENSITY FACTORS FOR A CRACK IN A BIMATERIAL BRAZILIAN TEST SPECIMEN
Author(s) -
Fiala Z.
Publication year - 1994
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.1460-2695.1994.tb00820.x
Subject(s) - stress intensity factor , materials science , structural engineering , composite material , test (biology) , intensity (physics) , forensic engineering , fracture mechanics , engineering , geology , optics , physics , paleontology
— The stress field in front of a crack tip lying in a plane bimaterial interface is always of a complex nature. The stress intensity factor characterising its asymptotic variation is therefore a complex number and its assessment from a numerical calculation requires the separation of the particular loading modes by an appropriate method. A suitable method is provided by the combination of curve integrals and an auxiliary singular field, enabling this separation by means of simple post‐processing. This method can also be applied to the separation of load modes in front of the crack tip in a homogeneous specimen exposed to a mixed‐mode load.