轴向压缩载荷下陶瓷切口件的断裂准则  

Fracture Criterion for Ceramic Notched Elements under Compression

作　　者：郑修麟[1] 赵康[1] 王泓[1] 

机构地区：[1]西北工业大学材料科学与工程学院,西安710072

出　　处：《中国机械工程》2004年第7期644-647,共4页China Mechanical Engineering

基　　金：国防预研基金资助项目 (97J12 .1.9HK0 3 17)

摘　　要：根据对切口试件的应力分析和脆性断裂理论 ,给出了压缩载荷下陶瓷切口件的断裂准则 ,并进行了验证。在压缩载荷下 ,陶瓷材料切口件的断裂强度与陶瓷材料的断裂强度之间存在定量关系。可根据陶瓷材料断裂强度的概率分布参数 ,求得压缩载荷下陶瓷材料切口件的带存活率的断裂准则 。Based on the stress analysis and theory of the brittle fracture,fracture criterion for notched elements of ceramics (or simply the notch strength of ceramics) was developed and substantiated.Analysis and test results show that the quantitative relationship exists between the fracture strengthes determined by testing smooth specimens and the notch strength of ceramics under compression. As a result, the fracture criteria with given survivability can be derived and checked.

关 键 词：陶瓷 脆性断裂 断裂准则 抗压切口强度 存活率 

分 类 号：TB302[一般工业技术—材料科学与工程] TQ174.1[化学工程—陶瓷工业]