国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

In today"s society, welding technology is widely used in the production of industrial equipment, and the quality of welding has a huge impact on the safety of equipment. Ultrasonic testing is one of the important methods of non-destructive testing today. It can effectively detect the welding conditions of the joints to determine whether there are internal defects. The test results are an important basis for the quality evaluation of welds. In this paper, the typical defects such as cracks, inclusions, unfused and other typical defects in the welded specimens with groove shapes of "U", "V" and "V" are carried out CIVA simulation and ultrasonic phased array testing. Firstly, the inspection process, scanning method and scanning angle are determined through simulation to obtain better signal-to-noise ratio and defect detectability. Secondly, it compares the test results of 16 different typical defects in the welding test board, and analyzes the missed judgment and misjudgment of various typical defects. Finally, a statistical comparison of the length measurement results of conventional ultrasound, phased array ultrasound, and radiographic testing is carried out, and several factors that affect the results of phased array ultrasound length measurement are analyzed, so as to provide better results for ultrasonic phased array in actual weld inspection. Great feasibility and reliability.