Manufacturing Industry
Vibrothermography developed to test composites for damage.(TESTING/ANALYSIS)
Advanced Materials & Processes, June, 2005
A technique for nondestructive evaluation of damage in advanced composite materials has reportedly been developed at the Virginia Polytechnic Institute and State University, Blacksburg, Va. Called vibrothermography, the technique is based on low-amplitude, high-frequency mechanical vibrations (in the range of 15,000 to 30,000 cycles per second, just beyond normal human hearing).
The vibrations are applied to composite materials, and then thermography maps temperature patterns that develop on the surface. The vibrothermography technique was developed at Virginia Tech in the Department of Engineering Science and Mechanics (ESM) in cooperation with Prof. Ed Henneke. Prof. Henneke's research group found that hot spots developed on the surface of the material above...
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