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Proceedings Paper

High temperatures health monitoring of the condensed water height in steam pipe systems
Author(s): Hyeong Jae Lee; Yoseph Bar-Cohen; Shyh-Shiuh Lih; Mircea Badescu; Xiaoqi Bao; Stewart Sherrit; Nobuyuki Takano; Patrick Ostlund; Julian Blosiu
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Paper 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 airbacked 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.

Paper Details

Date Published: 17 April 2013
PDF: 10 pages
Proc. SPIE 8695, Health Monitoring of Structural and Biological Systems 2013, 869514 (17 April 2013); doi: 10.1117/12.2009240
Show Author Affiliations
Hyeong Jae Lee, Jet Propulsion Lab. (United States)
Yoseph Bar-Cohen, Jet Propulsion Lab. (United States)
Shyh-Shiuh Lih, Jet Propulsion Lab. (United States)
Mircea Badescu, Jet Propulsion Lab. (United States)
Xiaoqi Bao, Jet Propulsion Lab. (United States)
Stewart Sherrit, Jet Propulsion Lab. (United States)
Nobuyuki Takano, Jet Propulsion Lab. (United States)
Patrick Ostlund, Jet Propulsion Lab. (United States)
Julian Blosiu, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 8695:
Health Monitoring of Structural and Biological Systems 2013
Tribikram Kundu, Editor(s)

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