采用应力释放法测量PDC热残余应力  

Researches on Measuring Residual Stresses of Polycrystalline Diamond Compacts Using Stress-Release Method

作　　者：徐根[1] 陈枫[2] 徐国平 肖建清[1] 

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083 [2]中南大学现代分析测试中心,湖南长沙410083 [3]金瑞新材料科技股份有限公司,湖南长沙410012

出　　处：《石油钻探技术》2010年第1期67-71,共5页Petroleum Drilling Techniques

基　　金：教育部博士点基金项目"油田钻探用金刚石复合片热残余应力致裂与止裂研究"(编号:20070533113)部分研究内容

摘　　要：精确测量聚晶金刚石复合片的热残余应力是优化其界面结构和提高其使用性能的关键。在分析原有应力释放法测聚晶金刚石复合片热残余应力原理的基础上,采用改进的应力释放法,对4种同材料与外形尺寸、不同金刚石层厚度的聚晶金刚石复合片进行了热残余应力试验研究,得到了金刚石层表面热残余应力的分布规律及热残余应力与基体厚度的关系曲线,比较了其试验结果和有限元计算结果,两者基本吻合。It is very important to accurately test the thermal residual stresses of polycrystalline diamond compacts（PDC）for the purpose of optimizing the composition of interface and improving the performance of PDC. Based on the analysis of using the current stress release method to test residual stresses of PDC, the stresses of four substrate thicknesses of PDC were tested. The distribution of thermal residual stresses and the relationship of it with substrate thickness were obtained. The test results agreed with those obtained by finite element analysis.

关 键 词：聚晶金刚石复合片 应力释放法 热残余应力 有限元法 

分 类 号：TE921.1[石油与天然气工程—石油机械设备]