Damage Progression in a Fiber Reinforced Cylindrical Rod by an Analysis of Guided AE Waves.

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  • 誘導波AE解析による繊維強化円筒の損傷進展
  • ユウドウハ AE カイセキ ニ ヨル センイ キョウカ エントウ ノ ソンショウ シンテン

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Abstract

Both the source location and fracture-type classification in a fiber reinforced hollow cylindrical rod (fishing rod) under local surface compression are studied by analyzing the guided wave acoustic emission (AEs). The source locations in the axial direction of the rod were determined by using the arrival time differences of F(1, 1)-mode guided waves at 0.20 MHz. AE events monitored during surface compression of the rod were classified into four fracture types, i.e., fiber splitting and fiber breakage at inner and outer surfaces by taking the cross-correlation of signals with artificial AE waves produced by laser-induced thermal expansion and break down. The cause of major damages of 250 mm-long fishing rod were estimated to be the fiber splitting and breakage at the loading point.

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