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ZHAMU Aruna, ZHANG Zuoguang, WANG Ke, et al. OPTICAL FIBER PRESSURE TESTING TECHNOLOGY USED IN CURE MOLDING PROCESS FOR POLYMER MATRIX COMPOSITES[J]. Acta Materiae Compositae Sinica, 2004, 21(1): 45-50.
Citation: ZHAMU Aruna, ZHANG Zuoguang, WANG Ke, et al. OPTICAL FIBER PRESSURE TESTING TECHNOLOGY USED IN CURE MOLDING PROCESS FOR POLYMER MATRIX COMPOSITES[J]. Acta Materiae Compositae Sinica, 2004, 21(1): 45-50.
shu

OPTICAL FIBER PRESSURE TESTING TECHNOLOGY USED IN CURE MOLDING PROCESS FOR POLYMER MATRIX COMPOSITES

  • 1.

    School of Materials Soience and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083;

  • 2.

    The 5th Laboratory, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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  • Received Date: January 19, 2003
  • Revised Date: May 06, 2003
    Abstract
  • According to the cure molding process of polymer matrix composite, an optical fiber sensor system was established for testing the pressure change in the normal direction of prepreg layers, and the applicability of this system was also evaluated. As a result of experimentation, this sort of optical fiber sensor can be used in the environment where the measuring temperature is under 120℃ and measuring pressure between 0.005~0.5 MPa, steadily and repeatedly. The effect of flex density, the measuring temperature and micro bend rebound of the fiber optical sensor during the mould forming process are given. The fit equation is performed with varying loading and a comparison of numerical results with known experimental data confirms the approximate validity of the fit equation.
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