摘要
本文介绍一个新断裂韧度V_(GC)——临界空穴扩张比参数的测试原理和方法。建立了用圆柱切口拉伸试样测定V_(GC)的误差估算方程,论证了工程测试V_(GC)的可行性。文中还总结给出了十多种常见材料的V_(GC)实测结果,并分析讨论了V_(GC)与常规力学性能及断裂韧度J_(IC)的关系。
n the present poper,the eperimental principle and metnod for determining the new fracture toughness-the crtiical void growth ratio V_(GC) is recommend summarilyt.The equation to estimate the meaurement error of fracture toughness V_(GC) is derived and empolyed to analyse the maximum relative error of V_(GC) in ac-tual test.The V_(GC) data for more than ten states of materials are presented,and then the correlations of the new fracture toughness V_(GC) with the conventional mechanical properties and the toughness J_(IC) are also dis-cussed.
出处
《材料工程》
EI
CAS
CSCD
北大核心
1994年第5期29-31,34,共4页
Journal of Materials Engineering
关键词
空穴扩张比
断裂韧度
测试
误差
Critical void growth ratio,Fracture toughess,Test method,Error analysis,Notched bar specimen