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Acoustical Physics
Published in: Acoustical Physics 4/2022

01-08-2022 | PHYSICAL FOUNDATIONS OF TECHNICAL ACOUSTICS

Laser Optoacoustic Method for Detecting Violations in the Periodicity of the Structure of Carbon Fiber Reinforced Plastic Composites

Authors: Yu. G. Sokolovskaya, N. B. Podymova, A. A. Karabutov

Published in: Acoustical Physics | Issue 4/2022

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Abstract—

Broadband acoustic spectroscopy with a laser source of probe pulses is used to detect violations in the periodicity of the structure of carbon fiber reinforced plastic (CFRP) composites caused by gaps between fibers in carbon fabric layers. The frequency dependences of the attenuation coefficient of longitudinal acoustic waves in the 1–11 MHz range are obtained for a section of a CFRP stringer panel. It is shown that in domains where the periodicity of the structure is violated, a local minimum is observed within the resonance maximum of the attenuation coefficient. The ultrasonic images of gaps are obtained.
previous article Optimum Sound Attenuation in a Rectangular Duct with Impedance Walls

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Metadata
Title
Laser Optoacoustic Method for Detecting Violations in the Periodicity of the Structure of Carbon Fiber Reinforced Plastic Composites
Authors
Yu. G. Sokolovskaya
N. B. Podymova
A. A. Karabutov
Publication date
01-08-2022
Publisher
Pleiades Publishing
Published in
Acoustical Physics / Issue 4/2022
Print ISSN: 1063-7710
Electronic ISSN: 1562-6865
DOI
https://doi.org/10.1134/S106377102204011X

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