Affiliation:
1. Nippon Steel and Sumitomo Metal Corporation
Abstract
The plastic part of crack tip opening displacement (CTOD) is derived from the plastic hinge model for deep-notched single edge-notch bend (SE(B)) specimens in BS, WES and ISO CTOD testing standards, and a typical plastic rotational factor is given by a constant value of 0.4. This value is appropriate for deep-notched SE(B) specimens, but is not suitable for shallow-notched SE(B) specimens. In this study, a new equation of calculating the plastic rotational factor was obtained by using the Electric Power Research Institute (EPRI) scheme. The equation shows the effect of crack length and strain hardening on the plastic rotational factor, and is useful for evaluating CTOD in shallow-notched SE(B) specimens.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference16 articles.
1. BS7448-1, Fracture mechanics toughness tests. Method for determination of KIC, critical CTOD and critical J values of metallic materials, British Standards Institution, London, UK, (1991).
2. ASTM E1290, Standard test method for crack-tip opening displacement (CTOD) fracture toughness measurement, ASTM International, West Conshohocken, PA, USA, (1989).
3. WES1108, Standard test method for crack-tip opening displacement (CTOD) fracture Toughness measurement, The Japan Welding Engineering Society, Tokyo, Japan, (1995).
4. ISO 12135, Unified method of test for the determination of quasistatic fracture toughness, International Organization for Standardization, Geneva, Switzerland, (2002).
5. M. T. Kirk, R. H. Dodds Jr, An analytical and experimental comparison of Ji-values for shallow through and part-thorough surface cracks, Eng. Frac. Mech., 39, 3 (1991), 535-551.
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献