Patent
Acoustic emission source positioning method of composite material plate of omnidirectional dual circular array
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In this paper, an acoustic emission source positioning method of a composite material plate of an omnidirectional dual circular array is presented. But the method comprises the following steps: adopting a dual acoustic emission sensor circular array and the radius of a known circular array, namely the distance between every two sensors, to solve a wave velocity by using a time difference of arrival of the two sensors; and performing verification on solved multiple groups of wave velocity arrays and an omnidianirectional experimental result of a solved 360-degree wave velocity, selecting nearest velocities, matching the nearest velAbstract:
The invention discloses an acoustic emission source positioning method of a composite material plate of an omnidirectional dual circular array. The method comprises the following steps: adopting a dual acoustic emission sensor circular array and the radius of a known circular array, namely the distance between every two sensors, to solve a wave velocity by using a time difference of arrival of the two sensors; and performing verification on solved multiple groups of wave velocity arrays and an omnidirectional experimental result of a solved 360-degree wave velocity, selecting nearest velocities, matching the nearest velocities with corresponding directions, performing gradual deletion to reduce the range of a detection area, repeating the experiment, and finally achieving accurate regional positioning of an acoustic emission source of a structural damage of the composite material plate.read more
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References
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Acoustic emission detection device and method for detecting bottom of storage tank in confined space
Lichuan Liu,Shifeng Liu,Wei Fang,Jiping Yang,Yibiao Dong,Weihong Fang,Tao Chen,Aishe Shui,Xiangdong Chang,Dan Shu,Lei Huang,Shu Xiumei +11 more
TL;DR: In this article, an acoustic emission detection device for detecting the bottom of a storage tank in a confined space is presented. But the detection results are limited to the detection of a small amount of elastic waves.
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