超音波伝ぱの可視化による有孔CFRP積層板中の層間はく離検出(<小特集>高精度な新非破壊検査技術)

Translated title of the contribution: Delamination Detection in Holed CFRP Laminates Using Visualized Ultrasound Propagation

矢代 茂樹, 高坪 純治, 遠山 暢之, 岡部 朋永, 武田 展雄

Research output: Contribution to journalArticle

Abstract

This study applied a newly developed technique for visualizing ultrasonic waves to damage detection in holed CFRP laminates. This technique provided a moving diagram of propagating waves with the use of a pulsed laser for generation scanning a specimen and a fixed transducer for reception. Multiple types of damage (i.e. splits, transverse cracks and delamination), as well as delamination during processing, were observed near the hole in the loaded specimens by soft X-ray radiography. The specimens were then inspected by visualizing the propagation of ultrasonic waves. The S_0 and A_0 Lamb modes were visualized on the CFRP cross-ply laminate. Furthermore, we successfully detected delamination near the hole through the appearance of scattered waves. These inspection results agreed well with that by soft X-ray radiography, and consequently confirmed the usefulness of the technique for visualizing ultrasonic waves in inspection for composite laminates.
Translated title of the contributionDelamination Detection in Holed CFRP Laminates Using Visualized Ultrasound Propagation
Original languageJapanese
Pages (from-to)1882-1887
Number of pages6
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume72
Issue number724
DOIs
Publication statusPublished - Dec 25 2006

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