Journal of Mechanical Science and Technology

  • 제15권12호
  • /
  • Pages.1616-1622
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  • 2001
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  • 1738-494X(pISSN)
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  • 1976-3824(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지

Evaluation of Inhomogeneous Deformation and Stress Concentration In Polymer Composites Injection Weld by means of Thermoelastic Techniques

  • Lim, Jae-Kyoo (Faculty of Mechanical Engineering, Research Center of Industrial Technology) ;
  • Kim, Yon-Jig (Faculty of Mechanical Engineering, Chonbuk National University)
  • 발행 : 2001.12.01
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초록

Fiber composite materials are widely used in aerospace industries due to their high specific strength and stiffness. Especially, the increasing use of polymer composite materials for injection of automobile components has led to a considerable interest in the application of stress pattern analysis by thermal emission to these composite materials. Therefore, in this study the microstructure of glass fiber orientation at the parent and weld line of polycarbonate is observed by a light transmission. And we also investigate a stress concentration model of a notch including short glass fibers. Especially the polymer injection weld reorients the fiber to suggest a new method for the evaluation of inhomogeneous deformation.

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참고문헌

  1. Beghi et al., 1986, 'A Spectral Analyzer for the Thermomechanical Response of Solids to Low Frequency Dynamic Loads,' J. phys. E. Vol. No. pp. https://doi.org/10.1088/0022-3735/20/1/004
  2. Belgen, M. H., 1967, 'Structural Stress Measurements with an Infrared Radiometer,' ISA Trans., Vol. 6, pp. 49-53
  3. Hagerman, E. M., 1973, 'Weld-Line Fracture in Molded Parts,' Plastics Eng., Vol., pp. 67-69
  4. Jordan, E. H and Sandor, B. I., 1978, 'Stress Analysis from Temperature Data,' Journal of Testing and Evaluating 6, No 6, pp. 325-331 https://doi.org/10.1520/JTE10575J
  5. Rocca and Bever, 1950, 'The Thermoelastic EfIect,' Trans. AIME 188, pp. 327-333
  6. Thomson, W. (Lord Kelvin), 1858, J. Maths., May 5, pp. 4-27