含浸不良のFRPの非破壊検査法(<小特集>強化プラスチックス小特集)

概要

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By using Fokker's Bond Tester (FBT, a resonance-impedance method) and the Image Analyzer System (IAS), the resonance characteristics and areas of defects of fiber reinforced plastic (FRP) sheets with a defective infiltrated layer were experimentally studied. The shear strength was also measured to compare with the values obtained by FBT and IAS. One type of defect in a layer was found to be wide-spread crowd voids and the other was locally distributed crowd voids. Although the wide-spread microscopic defects varied in size, quantity and configuration, three experimental values measured by FBT, IAS and shear tests on an arbitrarily selected place in FRP sheets were closely related eath other. In the case of local defects, the values by IAS could be related differently to the shear strength. But more detailed examinations about the local defects are needed to prove FBT and IAS to be useful devices to inspect FRP with defective infiltrated layers.
社団法人日本材料学会の論文
1982-12-15