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A fracture mechanics analysis of a crack in a variable thickness plate having a fillet (thin-to-thick type)

✍ Scribed by Won Ho Yang; Yong Shick Choy; Myoung Rae Cho

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
964 KB
Volume
42
Category
Article
ISSN
0013-7944

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✦ Synopsis

AbstractXrack

tip stress intensity factors for the cracks in variable thickness plates having a fillet subjected to tensile (mode I) loadings were obtained by three-dimensional flnite element analysis. Stress intensity factors were calculated by the crack opening displacement method proposed by IngratTea and Manu [Inr. J. numer. Merh. Engrzg l&1427-1445 (1980)]. The correction factor of the stress intensity factors was introduced in the form of F(IZ, g, w, p). And characteristics of the fatigue crack propagation behavior near the thickness interface were examined for 7075-T6 aluminum specimens. A series of thin-to-thick type variable thickness specimens having a fillet (CCT type) was prepared. Fatigue tests were performed under load control in tension-tension.

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