The Propagation of AE Wave in Oil Storage Tank

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  • 石油タンクにおけるAE波の伝播について
  • セキユ タンク ニ オケル AEハ ノ デンパ ニ ツイテ

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The corrosion damage evaluation method using the AE is effective in the cost reduction in maintenance management of oil storage tanks. We measure AE wave transmitted through the contents of a tank, and obtain the information on AE, such as energy level, the number of source, and generating location. Further, corrosion damage evaluation is performed from the information. However, it is not clear that the propagation course, damping characteristic, etc.<br> Then, authors investigated the propagation characteristic and the damping characteristic of AE wave in a tank. This report introduces the result investigated about being shown below.<br>(1) The damping characteristic of AE wave, when various artificial AE generated on the shell plate of the empty tank.<br>(2) The damping characteristic of AE wave, when various artificial AE generated on the bottom plate of the empty tank.<br>(3) The difference in propagation and damping characteristic of AE wave by the difference in the existence of the contents of a tank<br>(4) The propagation characteristic of AE wave which transmitted through the contents of a tank.

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