CRACK GROWTH PREDICTION IN A GRAPHITE SAMPLE UNDER MIXED MODE LOADING

摘要：

Cracked components made of graphite are usually susceptible to brittle fracture due to mixed mode I/II (tensile-shear) loading. Some experimental and theoretical techniques have been proposed in the past for evaluating mixed mode brittle fracture. However, the reported test data for mixed mode fracture toughness of a graphite sample can not be predicted by the available fracture theories. In this paper a modified criterion is employed for analyzing the fracture toughness data given for this graphite sample. It is shown that the modified criterion provides very good predictions since it takes into account the effect of nonsingular stress term around the crack tip in addition to the conventional stress intensity factors.

作者: M.R.Ayatollahi M.R.M.Aliha

作者单位: Fatigue and Fracture Lab. Department of mechanical engineering, Iran University of Science and Technology (IUST), Narmak, 16844, Tehran, Iran.

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）