铝合金对接焊缝云纹干涉应变测试研究

Strain Test Research on Welding of Aluminium Alloy with Moiré Intervention

从计算机图像处理技术中的数字相关方法出发,结合云纹干涉的测试方法,与实际工程背景相结合,通过对铝合金表面粘贴栅线,和参考栅线干涉得到云纹图,解决在试验时由于云纹的快速移动而导致难以判别云纹级数的困难,测定铝合金材料对接焊缝的力学性能,得到了理想的结果,为大应变的高精度、非接触、全场测量提供了良好的方法.

This paper presents a digital correlation method based on image processing by computer with molte intervention. The test of mechanical properties of the welded connections of aluminium alloy is carried out, and better results are obtained. This method shows the advantages of the wide range of application, untouching, whole aspect measurement and high accuracy in engineering applications.