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Microphone is subject to the interference of working acoustic sources from surroundings. It is often difficult to acquire useful acoustic signal from the hostile environment. This problem has become the obstacle to use the acoustic signal for monitoring laser welding process. To monitor the weld quality effectively, a novel monitoring strategy on source localization and tracking of laser source is...
The characteristics of the acoustic signals generated in laser welding are investigated using a two-dimensional model, which was determined based on a theoretical investigation of the process heat balance. Three kinds of welds with different penetration depths induced by the welding parameters have been presented, and spherical field point meshes have also been built to obtain the spatial distributions...
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