The Design and Verification of an Active SAMSR Ultrasonic Guided Wave Monitoring System with Ultra-Low Crosstalk

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ID: 112672
2020
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Abstract
Due to long propagation distance and high sensitivity to a variety of damages, ultrasonic guided wave technologies have been widely applied in the damage detection or health monitoring of pipe networks and large plate-like structures. However, there are two important problems to be solved when applying this technology; namely, the large scanning time required for monitoring large-scaled structures and the serious crosstalk between the actuation and receiving signals, especially when monitoring hot-spot regions. Therefore, this study mainly designed key parts, such as the matrix switcher and attenuation circuit. The single-actuation and multiple-simultaneous-reception (SAMSR) mechanism based on an analog switching matrix and a low noise charge amplifier circuit was designed and integrated with the SPI control bus to shorten the scanning time. Moreover, a two-stage attenuation circuit with an interlocking isolation structure is presented to effectively isolate the receiving signals from the actuation signals to obtain ultra-low crosstalk even under a high voltage actuation source. In this study, the designed matrix switcher and other components were integrated into the developed ultrasonic guided wave monitoring system. Several experiments were conducted on a stiffened composite structure to illustrate the effectivity of the developed SAMSR ultrasonic guided wave system by comparing the signals collected with those from a commercial ultrasonic guided wave system.
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xue2020sensorsthe Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wendong Xue, Mengjiao Yang, Deming Hong, Di Wu, Yishou Wang, Xinlin Qing, Wendong Xue, Mengjiao Yang, Deming Hong, Di Wu, Yishou Wang, Xinlin Qing
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Journal sensors
Year 2020
DOI
10.3390/s20030898
URL
https://www.mdpi.com/1424-8220/20/3/898
Keywords
ultrasonic guided wave single-actuation and multiple-simultaneous-reception (samsr) ultra-low crosstalk matrix switcher

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