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A Magnetostrictive Phased Array System for Guided Wave Testing and Structural Health Monitoring of Pipe

A new long-range guided wave testing (GWT) technology for pipe inspection was developed that synthesizes the advantages of both traditional piezoelectric and magnetostrictive GWT technology. This new multi-channel magnetostrictive sensor technology combines the higher signal-to-noise ratio possible with magnetostrictive technology with the superior circumferential resolution and energy focusing capabilities of standard piezoelectric GWT tools. The method is particularly suited to structural health monitoring situations where sensors or sensor components are permanently bonded in place.

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