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Volume 27 Issue 5
Sep.  2013
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Citation:
shu

Experimental research of the ablation threshold of Kevlar/epoxy

  • 1.

    Institute of Fluid Physics, CAEP, Mianyang, 621900

  • Received Date: 2002-10-15
    Accepted Date: 2003-02-24
  • The surface reflectivity of Kevlar/epoxy doesn't change when there are no chemical and physical changes of the composite reinforcced by polyaryl amide fibers irradiated by laser beam.However it will change.The ablation threshold of the material can be obtained by monitoring its surface reflectivity changes using integrated spheres and photodiode system.This method can trace the increase of the laser power to get the ablation threshold of the material.This paper has proved the feasibility of this method by measuring the threshold of the composite reinforced by polyaryl amide fibers irradiated by laser beam with a wavelength of 1.06μm.
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    Klein C A.AIAA J,1992,25(5):705.
    [2]

    Pering G A.J Composite Material,1991,14:54.
    [3]

    Griffis C A.J Composite Material,1991,15:427.
    [4] 葛新石,陈则韶.量热技术和热物性测定.合肥:中国科学技术大学出版社,1990:155.
    [5] 朱德忠.热物理测量技术.北京:清华大学出版社,1990:205.
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Experimental research of the ablation threshold of Kevlar/epoxy

  • 1. Institute of Fluid Physics, CAEP, Mianyang, 621900
  • Received Date: 2002-10-15
  • Accepted Date: 2003-02-24
  • Available Online: 2003-09-25

Abstract: The surface reflectivity of Kevlar/epoxy doesn't change when there are no chemical and physical changes of the composite reinforcced by polyaryl amide fibers irradiated by laser beam.However it will change.The ablation threshold of the material can be obtained by monitoring its surface reflectivity changes using integrated spheres and photodiode system.This method can trace the increase of the laser power to get the ablation threshold of the material.This paper has proved the feasibility of this method by measuring the threshold of the composite reinforced by polyaryl amide fibers irradiated by laser beam with a wavelength of 1.06μm.

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