Abstract:Resistance spot welding (RSW) is the leading process of automobile body welding, and its quality is related to the reliability and safety of the whole vehicle. The effectively and automatically ultrasonic nondestructive testing is the development direction which can judge the spot welding quality, and then the positioning error of probe has an important impact on the test results. From this, conventional ultrasonic A-scan is adopted. Firstly, this paper presents the nugget diameter mathematic model of two-laye… Show more
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