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通过红色激光对显微镜载物台上的点焊件照射,在示波屏上可观察到一种形似焊缝的影象,这就是超声波所产生的焊缝声影象。这种新型影象检测仪即是扫描激光声显微镜SLAM(Scanning Laser Acoustic Microscope)。
A laser-like image of the weld is observed on the oscilloscope by means of a red laser on the spot-weldment on the microscope stage. This is the sonographic image of the weld produced by the ultrasound. This new type of image detector is a scanning SLAM (Scanning Laser Acoustic Microscope).