Determination of elastic plastic fracture toughness paranneters for a compact tension specimen using the finite element method
Materialpruefung/Materials Testing, cilt.54, sa.6, ss.408-415, 2012 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 54 Sayı: 6
- Basım Tarihi: 2012
- Doi Numarası: 10.3139/120.110345
- Dergi Adı: Materialpruefung/Materials Testing
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.408-415
- Dokuz Eylül Üniversitesi Adresli: Evet
Özet
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.