The Creep Measurement of 475°C Pipeline Using Moire Interferometry

[+] Author and Article Information
X. Huimin, Z. Wei, P. Dietz, A. Schmidt

Institut für Maschinenwesen, Technical University of Clausthal, 38678 Clausthal-Zellerfeld, Germany

Z. Daqing, D. Fulong

Department of Engineering Mechanics, Tsinghua University, 100084 Beijing, China

J. Pressure Vessel Technol 120(2), 144-148 (May 01, 1998) (5 pages) doi:10.1115/1.2842232 History: Received November 06, 1997; Revised January 26, 1998; Online February 11, 2008


In this study, a new experimental method for measuring the creep of pipeline using moire interferometry was proposed. Curved-surface-deformed grating replicating technique was combined with the high-temperature-resistant grating and moire interferometry method, and was applied to measure the creep of a 475°C main steam pipeline in the Qinghe Power Plant for 3600 h. The measuring principle and experimental techniques are described. The measuring error and experimental results are discussed in detail.

Copyright © 1998 by The American Society of Mechanical Engineers
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