title: Extensional-wave stopband broadening across the joint of pipes of different thickness.
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.
authors.affiliation: School of Geosciences, China University of Petroleum, Qingdao, China syuanda@sina.com, tangxiam@aliyun.com, liuyukai.1008@163.com, xusongupc@sina.com, zhuangchunxi@sina.com.
authors.forename: Yuanda
authors.initials: Y
authors.lastname: Su
authors.affiliation: School of Geosciences, China University of Petroleum, Qingdao, China syuanda@sina.com, tangxiam@aliyun.com, liuyukai.1008@163.com, xusongupc@sina.com, zhuangchunxi@sina.com.
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Tang
authors.affiliation: School of Geosciences, China University of Petroleum, Qingdao, China syuanda@sina.com, tangxiam@aliyun.com, liuyukai.1008@163.com, xusongupc@sina.com, zhuangchunxi@sina.com.
authors.forename: Yukai
authors.initials: Y
authors.lastname: Liu
authors.affiliation: School of Geosciences, China University of Petroleum, Qingdao, China syuanda@sina.com, tangxiam@aliyun.com, liuyukai.1008@163.com, xusongupc@sina.com, zhuangchunxi@sina.com.
authors.forename: Song
authors.initials: S
authors.lastname: Xu
authors.affiliation: School of Geosciences, China University of Petroleum, Qingdao, China syuanda@sina.com, tangxiam@aliyun.com, liuyukai.1008@163.com, xusongupc@sina.com, zhuangchunxi@sina.com.
authors.forename: Chunxi
authors.initials: C
authors.lastname: Zhuang