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Proceedings Paper

Removing surface accretions with piezo-excited high-frequency structural waves
Author(s): Michał K. Kalkowski; Timothy P. Waters; Emiliano Rustighi
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Paper Abstract

Unwanted accretions on structures are a common machinery maintenance problem, which can pose a serious safety threat if not treated effectively and punctually. In this paper we investigate the capability of piezo-excited structural waves for invoking delamination of accreted material from waveguides. We apply a wave-based technique for modelling piezoelectric excitation based on semi-analytical finite elements to model the interface shear stress associated with piezo-actuated structural waves. As a proof of concept, we present a demonstration experiment in which patches of material are removed from a beam-like waveguide with emulated anechoic terminations using ultrasonic excitation.

Paper Details

Date Published: 2 April 2015
PDF: 15 pages
Proc. SPIE 9431, Active and Passive Smart Structures and Integrated Systems 2015, 94311T (2 April 2015); doi: 10.1117/12.2087048
Show Author Affiliations
Michał K. Kalkowski, Univ. of Southampton (United Kingdom)
Timothy P. Waters, Univ. of Southampton (United Kingdom)
Emiliano Rustighi, Univ. of Southampton (United Kingdom)

Published in SPIE Proceedings Vol. 9431:
Active and Passive Smart Structures and Integrated Systems 2015
Wei-Hsin Liao, Editor(s)

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