Investigation of residual stresses on the boundary of SiC/SiC +20% TiB2 composite materials joining by optic modulation-polarization method

• Published in: Journal of the European Ceramic Society Vol. 27; no. 6; pp. 2513 - 2519
• Main Authors: BEREZHINSKY, L. I, BEREZHINSKY, I. L, GRIGOREV, O. N, SERDEGA, B. K, UKHIMCHUK, V. A
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier 2007
• Subjects: Applied sciences; Building materials. Ceramics. Glasses; Ceramic industries; Cermets, ceramic and refractory composites; Chemical industry and chemicals; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Joining; welding; Materials science; Materials synthesis; materials processing; Miscellaneous; Other materials; Physics; Specific materials; Technical ceramics; Ceramic matrix composite; 81.05.Mh; 07.10.Lw; Joining; Composites; Strength; Stress; SiC; Multiple layer; Mechanical properties; Joining; Experimental study; Composite material; Non oxide ceramics; Optical polarization; Silicon carbide; Titanium boride; Technical ceramics; Optical modulation; Bonding; Residual stress
• ISSN: 0955-2219; 1873-619X
• DOI: 10.1016/j.jeurceramsoc.2006.08.017

An optical method of registration of internal stresses in composite materials is presented. The method is based on the modulation of polarisation of laser radiation reflected from anisotropic media and the definition of its anisotropy parameters by means of this modulation. Residual stresses on the border of SiC/SiC + 20% TiB2 joints, caused by the difference of thermal expansion coefficients, were studied by this method. The experimental curve of stress distribution is in good qualitative agreement with theoretical calculation. The stress magnitude obtained by the method coincides with the values obtained by a Raman scattering method and XRD. 12 refs.