Manufacturing Industry
Acoustic verification of composites.(TECH SPOTLIGHT)
Advanced Materials & Processes, March, 2007 by Adams, Tom
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Measurement of a polymer-based material's acoustic properties is a fast method of identification. It is quick because it requires sending only a single pulse of ultrasound into the material, a process that takes a small fraction of a second. Often the initial step in the verification of a material's identity (and sometimes the only step needed) is to find out the material's acoustic impedance.
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The acoustic microscope automatically determines the acoustic impedance of the material, and displays this value in units called MegaRayls. For polymer-based composites, acoustic impedance ...
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