摘要
本文论述了J积分和J阻力曲线作为表征材料断裂韧性特征的过程,介绍了国际上现有的测试J_(IC)和J_R曲线的各种标准。对标准中的几个关键问题:延性断裂韧度J_(IC)的确定方法,J控制裂纹扩展条件,斜化线斜率的确定和对试样几何型式与尺寸要求进行了分析与讨论。
This paper described the process for fractur toughness as characterized by the J-inter-gral (includes: onset of stable crack extension J/c and stable crack growth resistance curve JK ) , introduced several standards of test method for JIC and JR in the world, analysed and discussed several key questions of standards: the method for determining the fracture toughness JIC, the conditions of J controlled crack growth, the determination of blunting line slope, and the demands to make of specimen type and geometric sizes.
出处
《压力容器》
1995年第4期27-33,38,共8页
Pressure Vessel Technology
基金
国家"八五"攻关课题(85-924-02-02)