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High temperatures health monitoring of the condensed water height in steam pipe systems

Show simple item record Lih, Shyh-Shiuh Bar-Cohen, Yoseph Lee, Hyeong Jae Badescu, Mircea Bao, Xiaoqi Sherrit, Stewart Takano, Nobuyuki Ostlund, Patrick Blosiu, Julian 2013-12-18T17:49:48Z 2013-12-18T17:49:48Z 2013-03-11
dc.identifier.citation SPIE Smart Structures and NDE Symposium, San Diego, California, March 10-14, 2013 en_US
dc.identifier.clearanceno 13-0786
dc.description.abstract Ultrasonic probes were designed, fabricated and tested for high temperature health monitoring system. The goal of this work was to develop the health monitoring system that can determine the height level of the condensed water through the pipe wall at high temperature up to 250 °C while accounting for the effects of surface perturbation. Among different ultrasonic probe designs, 2.25 MHz probes with air backed configuration provide satisfactory results in terms of sensitivity, receiving reflections from the target through the pipe wall. A series of tests were performed using the air-backed probes under irregular conditions, such as surface perturbation and surface disturbance at elevated temperature, to qualify the developed ultrasonic system. The results demonstrate that the fabricated air-backed probes combined with advanced signal processing techniques offer the capability of health monitoring of steam pipe under various operating conditions. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2013 en_US
dc.subject High Temperatures (HT) en_US
dc.subject HT piezoelectric transducers en_US
dc.subject fluid height monitoring en_US
dc.subject health monitoring en_US
dc.subject monitoring steam condensation en_US
dc.subject sensors en_US
dc.title High temperatures health monitoring of the condensed water height in steam pipe systems en_US
dc.type Preprint en_US

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