电测法应用于低弹性模量材料测试研究  

Testing study on the low modulus material by using electrical resistance strain measurement method

作　　者：孙仙山[1] 孙文成[1] 

机构地区：[1]山东工业大学材料系,山东济南250061

出　　处：《山东科学》1999年第3期21-25,共5页Shandong Science

摘　　要：电测法测试低弹性模量材料时表现出较明显的加强效应问题，这是由于被测试件和电阻应变片二者的弹性模量相差较大所致。实验证明，当试件材料的弹性模量很低时，测试误差很大，影响因素较多，修正应慎重。The problem of stiffening effect of the gage in a strain measurement will be brought obviously to a low modulus material by electrical resistance strain measurement method,because of the value of modulus between the specimen and the strain gage has larger difference.The strain measurement to the materials which have either a very low modulus of elasticity was proved by experiment that the error is large and the influenced factors are more for it.So the application of the correctional equations must be careful.

关 键 词：弹性模量 应变测量 修正公式 材料测试 测试误差 

分 类 号：O348.2[理学—固体力学] TB302.1[理学—力学]