Experimental Examination of Theory of CTE (Coefficient of Thermal Expansion) Control Technology

• Published in: JSME international journal. Ser. 1, Solid mechanics, strength of materials Vol. 34; no. 2; pp. 178 - 186
• Main Authors: ISHIKAWA, Takashi, HAYASHI, Yoichi, FUKUNAGA, Hisao, MATSUSHIMA, Masamichi, NOGUCHI, Tatsuru
• Format: Journal Article
• Language: English
• Published: Tokyo The Japan Society of Mechanical Engineers 1991; Japan Society of Mechanical Engineers
• Subjects: Composite Material; Exact sciences and technology; Filament Wound Method; Fundamental areas of phenomenology (including applications); Hygroscopic Effect; Material Design; Physics; Solid mechanics; Static elasticity (thermoelasticity...); Structural and continuum mechanics; Thermal Expansion; Thermal expansion; Thermoelasticity; Filament winding; Experimental study; Composite material; Hygroscopic property
• ISSN: 0914-8809
• DOI: 10.1299/jsmea1988.34.2_178

A previously proposed lamination tailoring technique for precise control of a coefficient of thermal expansion (CTE) under a wide range of temperature is examined by detailed measurements of a CTE of two types of specimens : rectangular plates and tubes of carbon/epoxy composite. The theoretical basis of the technique consists of two concepts of the thermoelastic invariants and the lamination parameters. Experiments for verification are conducted with a specially designed measurement system. The results of 40% 0°and 60% ±45°plates fall between ±1×10-7°C-1 within the temperature range from -50°C to 40°C. Quite similar results are obtained for tubular specimens. It is also uncovered that the axial CTE is susceptible to variation of an off-axis angle. Precise control of the angle is a key point of the present technology .