年次大会講演論文集
Online ISSN : 2433-1325
セッションID: 2254
会議情報
2254 ラム波を用いた極低温複合圧力容器側壁の一次検査法(S26-2 非破壊評価とモニタリング(2),S26 非破壊評価とモニタリング)
水谷 義弘井ノ川 智史黒川 悠下田 孝幸
著者情報
会議録・要旨集 フリー

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抄録
In this study, usefulness of lamb waves generated by chirp signals for NDI was examined. The target for the inspection is wall parts of composite propellant tanks. We first studied characteristics of lamb waves propagated around delamination zone by computer simulation. Then, the damage inspection using lamb waves generated by chirp signals was conducted on the composite plates with artificial damaged zone. When the sensor is on the damaged zone, maximum amplitude became 17% of those at sound zone. On the other hand, when the damage zone was between two sensors, scattered lamb waves were monitored. Finally damage inspection system was developed by utilizing these characteristics of lamb waves.
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© 2005 一般社団法人日本機械学会
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