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- Article name
- Laser optoacoustic method of quantitative evaluation of porosity influence on local elastic moduli of isotropic composite materials
- Authors
- Podymova N. B., , npodymova@mail.ru, M. V. Lomonosov Moscow State University; National University of Science and Technology "MISiS", Moscow, Russia
Karabutov A. A., , aak@ilc.edu.ru, National University of Science and Technology "MISiS"; International Laser Center, M. V. Lomonosov Moscow State University, Moscow, Russia
Kobeleva L. I., , chern@ultra.imet.ac.ru, Institute of Metallurgy and Materials Science named after A. A. Baikov RAS, Moscow, Russia
Chernyshova T. A., , chern@ultra.imet.ac.ru, Institute of Metallurgy and Materials Science named after A. A. Baikov RAS, Moscow, Russia
- Keywords
- isotropic composite materials / porosity / elastic moduli / laser optoacoustic method / phase velocity / longitudinal and shear acoustic waves
- Year
- 2012 Issue 2 Pages 58 - 64
- Code EDN
- Code DOI
- Abstract
- Laser optoacoustic method of quantitative evaluation of porosity influence on local elastic moduli of isotropic composite materials is proposed and realized experimentally. The method of elastic moduli determination is based on laser thermooptical excitation of ultrasound and measurements of phase velocities of longituidinal and shear acoustic waves in samples under testing. The silumin matrix composite samples reinforced with silicon carbide (SiC) microparticles with a various mass concentration of SiC were investigated. It was found that to provide the increase of elastic moduli SiC microparticles the incipient material porosity at addition of should not exceed 2-2,5 %.
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