Using Broadband Acoustic Spectroscopy with a Laser Source of Ultrasound to Study the Frequency Dependences of the Phase Velocity of Longitudinal Acoustic Waves in Porous Carbon Fiber Reinforced Plastic Composites

2021 ◽  
Vol 85 (1) ◽  
pp. 93-97
Author(s):  
Yu. G. Sokolovskaya ◽  
N. B. Podymova ◽  
A. A. Karabutov
Keyword(s):  
Acoustic Waves ◽  
Laser Source ◽  
Carbon Fiber Reinforced Plastic ◽  
Longitudinal Acoustic ◽  
Fiber Reinforced Plastic ◽  
Plastic Composites ◽  
Acoustic Spectroscopy ◽  
Reinforced Plastic ◽  
Longitudinal Acoustic Waves ◽  
Frequency Dependences

Study of Porosity of Carbon Reinforced Plastic Composites Using Broadband Ultrasound Structuroscopy Techniques

2017 ◽  
Vol 755 ◽  
pp. 44-51
Author(s):  
Anton S. Bychkov ◽  
Alexander A. Karabutov ◽  
Elena V. Savateeva ◽  
Yulia G. Sokolovskaya ◽  
Vasily P. Zarubin ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
Metal Matrix ◽  
Elastic Moduli ◽  
Epoxy Composites ◽  
Ultrasonic Spectroscopy ◽  
Isotropic Composite ◽  
Plastic Composites ◽  
Reinforced Plastic ◽  
Local Porosity ◽  
Longitudinal Acoustic Waves

Theoretical assessments are given for the use of the through-transition technique of broadband ultrasonic spectroscopy to determine porosity of heterogeneous materials. Experimental measurements of local porosity of composites using the through-transition technique are presented. Dependences of elastic moduli on the concentration of hardening particles and porosity of metal matrix isotropic composite found. Experimental relationship between the phase velocity of longitudinal acoustic waves and the power of structural noise in samples of graphite epoxy composites is obtained.

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