Akademik Veri Yönetim Sistemi
Materialpruefung/Materials Testing, cilt.54, sa.6, ss.408-415, 2012 (SCI-Expanded, Scopus)
In this study, elastic-plastic fracture toughness of an aluminum alloy is investigated. J-integral was calculated using the finite element software and formulation. Crack tip opening displacement (CTOD) is determined by using the plastic hinge model (δph) and direct measurement (δ5). J-Δa and CTOD-Δa resistance curves are constructed and compared with those obtained from formulation and those generated from test data, respec-tively. Good agreement has been obtained between the test results, the formulation and the results of the finite element analysis. The relation-ship between δph, and δ5 is nonlinear and as CTOD increases δ5 becomes larger than δph. The relationship between J-integral and CTOD is found to be linear for both δph and δ5. It has been seen that the proportionality constant d n considerably depends on the method of calculation of CTOD. © Carl Hanser Verlag, München.