Laser-Ultrasonic Method for Measuring the Local Elastic Moduli of Porous Isotropic Composite Materials

Authors: Alexander A. Karabutov, Natalia B. Podymova, Elena B. Cherepetskaya, Vladimir A. Makarov, Yulia G. Sokolovskaya

Abstract:

The laser-ultrasonic method is realized for quantifying the influence of porosity on the local Young’s modulus of isotropic composite materials. The method is based on a laser thermooptical method of ultrasound generation combined with measurement of the phase velocity of longitudinal and shear acoustic waves in samples. The main advantage of this method compared with traditional ultrasonic research methods is the efficient generation of short and powerful probing acoustic pulses required for reliable testing of ultrasound absorbing and scattering heterogeneous materials. Using as an example samples of a metal matrix composite with reinforcing microparticles of silicon carbide in various concentrations, it is shown that to provide an effective increase in Young’s modulus with increasing concentration of microparticles, the porosity of the final sample should not exceed 2%.

Keywords: Laser ultrasonic, longitudinal and shear ultrasonic waves, porosity, composite, local elastic moduli.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1110017

References:

[1] Springer handbook of nanotechnology / Ed. B. Bhushan. Springer- Verlag, Berlin (2007), 1916 p.
[2] A.D. Romig, jr, M.T. Dugger, PJ. McWhorter.ActaMater. 51, 5837 (2003).
[3] Yu Golovin.Introduction to nanotech.Machinery, M. (2007).496 pp.
[4] P.D. Tall, S. Ndiaye, A.C. Beye, Z. Zong, W.O. Soboyejo,H.-J. Lee, A.G. Ramirez, K. Rajan, Mater. Manuf. Processes22 (2007) 175-179.
[5] E. Wibowo, C.Y. Kwok, J. Micromech. Microeng. 16 (2006)101-108.
[6] A.K. Nanda Kumar, C.K. Sasidharan Nair, M.D. Kannan,S. Jayakumar, Mater. Chem. Phys. 97 (2006), 308-314.
[7] M. Callisti, F.D. Tichelaar, B.G. Mellor, T. Polcar, Surf.Coat. Technol. 237 (2013) 261-268.
[8] V. V. Polyakov and A. V. Golovin, “Elastic Characteristics of Porous Materials,” Prikl. Mekh. Tekh. Fiz. 34 (5), 32-35 (1993) (J. Appl. Mech. Tech. Phys. 34 (5), 625-628 (1993)).
[9] V. E. Gusev and A. A. Karabutov, Laser Optoacoustics (Nauka, Moscow, 1991) (in Russian)
[10] S. Yu. Davydov, “Effect of Pressure on the Elastic Properties of Silicon Carbide,” Fiz. Tverd. Tela 46 (7), 1169–1173 (2004).