A combined locating method of acoustic emission sources for rockfill dam face slab damage based on wave velocity correction
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(1.The National Key Laboratory of Water Disaster Prevention, Nanjing 210098, China;2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China)

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TV331

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    Abstract:

    To improve the accuracy of acoustic emission source locating for concrete panel damage in rockfill dams, a combined acoustic emission source locating method based on wave velocity correction, BSO-IGeiger method, is proposed. Wave velocity correction is used to improve the known constant wave velocity time difference method (Geiger method) and a localization objective function is established. The localization objective function is solved using the learning elimination mechanism-based beetle herd search algorithm (BSO). At the same time, a sensor array health monitoring network layout method is developed for area localization and sensor survival detection to ensure the reliability of the sound source localization of the rockfill dam panel. The experimental verification results show that the locating effect of BSO-IGeiger method is significantly better than that of Geiger method and the unknown constant wave velocity time difference method.

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徐晓阳,苏怀智,闫潇群,等.基于波速修正的堆石坝面板损伤声发射源组合定位方法[J].水利水电科技进展,2023,43(4):86-91, 104.(XU Xiaoyang, SU Huaizhi, YAN Xiaoqun, et al. A combined locating method of acoustic emission sources for rockfill dam face slab damage based on wave velocity correction[J]. Advances in Science and Technology of Water Resources,2023,43(4):86-91, 104.(in Chinese))

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History
  • Received:August 09,2022
  • Revised:
  • Adopted:
  • Online: July 27,2023
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