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Proceedings Paper

Guided wave based structural health monitoring of piping systems
Author(s): Frank Schubert; Bernd Frankenstein; Klaus-Jochen Froehlich; Martin Kuettner
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Paper Abstract

In the European project SAFE PIPES guided elastic waves in the frequency range between 100 and 250 kHz, generated and detected by appropriate transducer arrays, are used to monitor the structural integrity of industrial piping systems by comparing the actual state of the pipe with a predefined reference state. In the present paper, theoretical, numerical, and experimental investigations are combined to study guided wave propagation and wave interaction with relevant defects in detail. Based on these findings, a guided wave based multi-channel SHM system is designed and applied for monitoring of crack-like defects in steel pipes. The first results reveal that guided wave based SHM in the kHz frequency regime has great potential for online monitoring of piping systems. It is able to combine imaging techniques with long range detection capabilities and therefore closes the gap between high-frequency NDE on the one hand and low-frequency vibration analysis on the other hand.

Paper Details

Date Published: 11 April 2007
PDF: 12 pages
Proc. SPIE 6532, Health Monitoring of Structural and Biological Systems 2007, 65320I (11 April 2007); doi: 10.1117/12.717909
Show Author Affiliations
Frank Schubert, Fraunhofer Institute for Nondestructive Testing (Germany)
Bernd Frankenstein, Fraunhofer Institute for Nondestructive Testing (Germany)
Klaus-Jochen Froehlich, Fraunhofer Institute for Nondestructive Testing (Germany)
Martin Kuettner, Fraunhofer Institute for Nondestructive Testing (Germany)


Published in SPIE Proceedings Vol. 6532:
Health Monitoring of Structural and Biological Systems 2007
Tribikram Kundu, Editor(s)

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