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Impact-Echo Instruments manufactures computer-operated equipment for nondestructive testing of concrete and masonry structures, including highways, bridges, ...
defects in concrete  flaws in concrete  highway pavement 
www.impact-echo.com - 2009-02-04
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ultraseismic
ndt
ultrasonic pulse velocity
nde
non destructive testing
protection
parallel seismic
corrosion
nondestructive testing
crosshole sonic logging
coatings
steel
inspection
impulse response
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