Scanning Acoustic Tomography (SAT), also called Scanning Acoustic Microscope (SAM), is a method for analyzing materials by measuring the reflecting speed and energy of an ultrasonic wave which is transmitted through the material of a certain thickness.
When sound signals are transmitted, using pure water as the medium, and hit the interface of different materials, part of the signals reflects and part penetrates. The machine then collects the signals and forms them into images.
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