论文部分内容阅读
用激光散斑法对金属材料焊接件进行照相，得到在某一温度区间的双曝光位移散斑图，然后用逐点分析法分析焊接部位附近的热位移场，进而求出热应变、热应力的分布，通过实例检测出焊缝中某些部位的缺陷。
By laser speckle method, the welding of metallic materials was photographed to get the double-exposure displacement speckle pattern in a certain temperature range. Then the point-by-point analysis was used to analyze the thermal displacement field in the vicinity of the welding area to find the thermal strain and thermal stress Distribution, through the example to detect some defects in the weld.