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Showing 1 to 4 of 4 for “"Non-collinear wave mixing"”.
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Detection and assessment of high temperature hydrogen attack in steel pressure vessels using non-collinear wave mixing
… no current detection technique is capable of non-destructively and reliably assessing the level of damage in HTHA affected vessels. This study presents a nondestructive testing approach that is capable of evaluating HTHA damage in pressure vessels made of carbon steels. A strategy of detection …
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Non-destructive quantitative assessment of oxidation in aged and rejuvenated asphalt concrete pavements using a non-collinear wave mixing approach
… Currently, engineers lack the proper tools for non-destructive, quick, and reliable inspection. The work in this report addresses this need by employing non-collinear wave mixing, a nonlinear acoustic technique, to evaluate the level of oxidation of the pavement. To implement the nonlinear …
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Nonlinear ultrasonic testing using a non-collinear approach: application to heat treatment of steels and to asphalt concrete mixtures
… micro-structural dependence of acoustic wave attenuation, velocity, and a non-linear parameter, non-collinear scattered wave amplitude. Specimens of various microstructures were prepared by means of heat treatment for 1045 and 4140 Steel. Nonlinear investigation was also performed on two …
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Damage evaluation in dimension limestone using nonlinear ultrasonics
… a period of 90 minutes. The samples were then nondestructively tested using nonlinear ultrasonics in the form of a non-collinear ultrasonic wave mixing approach. In addition, the test samples’ degradation of flexure strength due to damage accumulation caused by the exposure to increasing levels …