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.

Removing surface accretions with piezo-excited high-frequency structural waves / Kalkowski, M. K.; Waters, T. P.; Rustighi, E.. - 9431:(2015), pp. 94311T.1-94311T.15. (Intervento presentato al convegno Active and Passive Smart Structures and Integrated Systems 2015 tenutosi a San Diego, CA nel 9th-10th March 2015) [10.1117/12.2087048].

Removing surface accretions with piezo-excited high-frequency structural waves

Rustighi E.
2015-01-01

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.
2015
Active and Passive Smart Structures and Integrated Systems 2015
Bellingham, WA
SPIE
9781628415346
Kalkowski, M. K.; Waters, T. P.; Rustighi, E.
Removing surface accretions with piezo-excited high-frequency structural waves / Kalkowski, M. K.; Waters, T. P.; Rustighi, E.. - 9431:(2015), pp. 94311T.1-94311T.15. (Intervento presentato al convegno Active and Passive Smart Structures and Integrated Systems 2015 tenutosi a San Diego, CA nel 9th-10th March 2015) [10.1117/12.2087048].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/290618
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