点焊薄片应变传感器的数值分析与实验研究  

Experimental studies and numerical analyses on spot welding flake strain sensors

作　　者：徐永君[1] 唐俊武[2] 赵清清[1] 王晓博[1] 

机构地区：[1]中国科学院力学研究所工程科学部,北京100190 [2]北京科技大学,北京100083

出　　处：《中国测试》2009年第1期90-93,共4页China Measurement & Test

摘　　要：工程实际中,许多现场环境不适合应变片的粘贴、密封、养护以及工期要求等,需要将应变粘贴、养护及密封工作提前到实验室进行。点焊薄片应变传感器能够保证焊接过程中不产生引起应变片损坏的热量。通过对电阻点焊和氩弧点焊两种薄片应变传感器进行试验研究和数值分析,证明了点焊薄片应变传感器具有很好的传递性能和疲劳性能,可以应用于复杂环境情况下的应变测量。For the disadvantage of adhering the strain gauge in practice, it is difficult for the gauges in adhering, curing and post curing, as well as the brevity of time limit for a project. Some pre-works, such as adhering, curing and post curing, and some primary seal, can be brought into laboratory with flake strain gauge/sensor technology. Then, it is only needed to weld the flake to the matrix in the field. Spot welding, TIG （Tungsten Inert Gas arc） and electrical resistance spot welding can transfer the stress with a certain scale very well, meanwhile, there is not any damage on the strain gauges. In this paper, a series of experimental studies were carried out and the FEM （Finite Element Method） calculation was carried out on the so-called spot welding flake strain sensors jointed on a matrix. All these investigations will provide a theoretical basis for the practical applications of these kinds of slice sensor.

关 键 词：应变传感器 点焊 传递性能 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置] TM930.114[自动化与计算机技术—控制科学与工程]