激光散斑照相法测量不同金属材料焊接部位的热位移  

Measurement of thermal displacement of welding points for differental metals by laser speckle photography

作　　者：张景超[1] 丁喜峰[1] 

机构地区：[1]燕山大学数理系,秦皇岛066004

出　　处：《激光杂志》2000年第5期38-39,共2页Laser Journal

摘　　要：本文用激光散斑照相法对不同金属材料焊接件在不同温度区间产生的热位移进行了实测 ,得到焊接部位的热位移随温度的升高而增大 ,其热应变及热应力亦随温度的升高而增大 ,且与理论中的分析相符。In this article,the laser speckle photography has been used for inspecting the thermal displacements,which are generated in the weldments made from different metal materials in different temperature intervals.The results indicat e:that the thermal displacements of the weld increase with temperature;and that the thermal strain and the thermal stress also increase with temperature,just the same as what is shown in the theoretical analysis.

关 键 词：激光散斑 焊接 热位移 热应变 金属材料 

分 类 号：TG456.7[金属学及工艺—焊接]