Quantitative Evaluation of the Blocking Ratio of a Blockage inside a Pipe Utilizing Film-Type PZT Elements
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概要
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We quantitatively estimated the location and area fraction of a model blockage inside a pipe utilizing guided waves propagating in a liquid inside a pipe. The guided wave was excited and detected by film-type PZT elements wounded around an external pipe surface. Location of the blockage can be estimated from an arrival time of the wave reflected by the blockage and measured propagation velocity. The blocking ratio can be also estimated by comparing the measured amplitude to the predicted one when the profile of the blockage was roughly evaluated prior to the measurement. We also discussed the effect of the flow rate on the amplitude of the reflected wave.
- 一般社団法人 日本機械学会の論文
著者
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Cho Hideo
Department Of Materials Processing Graduate School Of Engineering Tohoku University
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Matsuo Takuma
Department Of Chemistry And Biochemistry The University Of Kitakyushu
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Abe Takahiro
Department Of Chemistry Faculty Of Science Kanagawa University
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CHO Hideo
Department of Mechanical Enigineering, Aoyama Gakuin University
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MATSUO Takuma
Department of Mechanical Enigineering, Aoyama Gakuin University
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松尾 卓摩
明治大学 理工学部
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ABE Takahiro
Department of Mechanical Enigineering, Aoyama Gakuin University
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