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Indexed by:会议论文

Date of Publication:2015-01-01

Included Journals:CPCI-S

Page Number:2945-2953

Abstract:A series of tests have been conducted to determine the survivability and functionality of a PZT sensor-based guide wave structural health monitoring (GWSHM) technology under the operating conditions of typical liquid rocket tanks such as cryogenic temperature. The performance of a typical piezoelectric sensor (PZT-5A) and different low temperature adhesives under cryogenic temperature was first investigated. The GWSHM sensor system for liquid rocket tanks was exposed to flight various environments from room temperature (10 degrees C) to cryogenic temperature (-180 degrees C) to evaluate the physical robustness of the sensor- adhesives system as well as operational survivability and functionality. Test results demonstrated that the developed sensors system can withstand operational levels of vibration and shock energy on a representative rocket tanks duct assembly, and is functional under the combined cryogenic temperature and vibration environment.