journal article·2001-01

ULTRASONIC NON-CONTACT TESTING OF BOND FAILURE IN MULTILAYERED ARTICLES OF COMPOSITE POLYMERIC MATERIALS

A.G. MITIN, V.G. EFIMOV, A.V. LOSKUTNIKOV

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Abstract

Abstract Non-contact through transmission NDT of multilayered thick-walled pipes has been analyzed, with the source of ultrasonic oscillations being located inside the pipe and receiver above the external surface of the pipe. It is shown by way of computation that the application of continuous frequency-modulated oscillations provides an increase in signal/noise ratio of 0.6 to 4-5. Use of gas-jet emitters generating intense broadband oscillations directly in air acknowledges the possibility of detecting bond failures in multilayered pipes having a total wall thickness up to I m. The efficiency of waveletanalysis for processing the data received has been demonstrated.
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Research context

OpenAlex topics: Thermography and Photoacoustic Techniques · Material Properties and Applications · Ultrasonics and Acoustic Wave Propagation

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References (9)

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