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Dr. Abdulhamid Al-Abduljabbar

Associate Professor

Associate Professor of Mechanical Engineering

كلية الهندسة
​2C-53, Department of Mechanical Engineering, ​College of Engineering
publication
Journal Article
2005

Pressure-sensitivity effects on toughness measurements of compact tension specimens for strain-hardening solids

, Abdulhamid A. Al-Abduljabbar . 2005

Abstract:
The path-independent J-integral is used as a fracture prediction criterion for loading beyond the elastic limit as Linear Elastic Fracture Mechanics (LEFM) cannot be applied. While J was originally defined from an energy perspective, it was demonstrated that it could be inferred from load-displacement diagrams. Therefore, the Compact Tension (CT) specimen testing is used to compute J for materials. In this work, the η-factor, an important parameter in the computation of the J-integral, is investigated for compact tension specimen for materials with pressure sensitive yielding. This is achieved by using a lower bound approach to derive the appropriate expression from η from the test geometry and material properties. The specimen is considered at fully plastic loading where it is in the state of collapse. The effect of pressure sensitivity is accounted for by using a Drucker-Prager yield criterion for solid materials. Since CT testing is usually conducted on metallic materials, strain-hardening behavior of the material is incorporated in this analysis. This is done by assuming a simple linear hardening curve of the material. Numerical results computed fordifferent cases show that as the material strain hardening increases.

Volume Number
9
Pages
1290-1295
more of publication
publications

The purpose of this study is to characterize the effects of heat damage on the electrical
conductivity and static mechanical properties of aluminum alloys. The data resulting from the

by A.Al-Abduljabbar&O.S.Es-Said
2014
publications

Abstract:

by Al-Abduljabbar, A, A, GG. A. Gibson, N. Dodds
2007