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Published on: November 20, 2014
Extensional-wave stopband broadening across the joint of pipes of different thickness
Yuanda Su1, Xiaoming Tang1, Yukai Liu1
1School of Geosciences, China University of Petroleum, Qingdao, China syuanda@sina.com, tangxiam@aliyun.com, liuyukai.1008@163.com, xusongupc@sina.com, zhuangchunxi@sina.com.
Abstract:
The stopband of pipe extensional waves is an interesting natural phenomenon. This study demonstrates an important extension of this phenomenon. That is, the stopband can be effectively broadened by transmitting the waves across the joint of pipes of different thickness. The theoretical and experimental results reveal the detailed process of stopband forming along the pipe and the band broadening across the pipe joint. The result can be utilized to provide a method for logging while drilling acoustic isolation design.
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