Real Time Ultrasonic Monitoring of Curing State of Liner in Solid Rocket Engine

doi:10.3969/j.issn.1000-1093.2014.05.018

Abstract

Abstract: The ultrasonic longitudinal wave reflection technology and the laser thickness measurement technology are used to monitor the curing process of solid rocket engine liner. An ultrasonic system is designed to monitor the curing process of liner in real-time to meet the need of using common ultrasonic probe under the curing temperature. The curing state of liner is characterized by the changes of liner thickness, ultrasonic longitudinal wave velocity and acoustic attenuation coefficient. The experimental results show that the liner thickness and acoustic attenuation coefficient decrease and the propagation velocity of longitudinal wave increases gradually during the curing reaction of liner, which reflects the change in curing state of liner, and its “half curing” state can be determined.

Key words: ordnance science and technology, solid rocket engine, liner, curing state, ultrasonic longitudinal wave

CLC Number:

V438

YANG Ya-jun, WANG Zhao-ba. Real Time Ultrasonic Monitoring of Curing State of Liner in Solid Rocket Engine[J]. Acta Armamentarii, 2014, 35(5): 697-702.

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