223 ガラス繊維強化ポリカーボネート切欠平板の引張りのもとでの損傷域の観察(OS 高分子および高分子複合材料)

概要

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An experimental program is presented which examines the microfracture in the damaged zone near the notch root of FRP plates. This is accomplished by observation of damaged zone in notched plates of a glass fiber-reinforced polycarbonate under tension. The process of initiation and growth of damage was measured by means of the luminance measurement technique with a CCD camera during loading and unloading in tension tests. The experiment shows that the area of damaged zone where the relative luminance is 75 % was a slight decrease when a tensile load is removed. In this region many microcracks were observed. On the other hand, the area of damaged zone where the relative luminance is 90 % reduced to half and there were no microcracks.
2000-11-24