Acoustic-sensor-based detection of damage in composite aircraft structures

Peter Foote; Tony Martin; Ian Read

doi:10.1117/12.516056

8 March 2004 Acoustic-sensor-based detection of damage in composite aircraft structures

Peter Foote, Tony Martin, Ian Read

Proceedings Volume 5272, Industrial and Highway Sensors Technology; (2004) https://doi.org/10.1117/12.516056
Event: Optical Technologies for Industrial, Environmental, and Biological Sensing, 2003, Providence, RI, United States

Abstract

Acoustic emission detection is a well-established method of locating and monitoring crack development in metal structures. The technique has been adapted to test facilities for non-destructive testing applications. Deployment as an operational or on-line automated damage detection technology in vehicles is posing greater challenges. A clear requirement of potential end-users of such systems is a level of automation capable of delivering low-level diagnosis information. The output from the system is in the form of "go’, "no-go’ indications of structural integrity or immediate maintenance actions. This level of automation requires significant data reduction and processing. This paper describes recent trials of acoustic emission detection technology for the diagnosis of damage in composite aerospace structures. The technology comprises low profile detection sensors using piezo electric wafers encapsulated in polymer film ad optical sensors. Sensors are bonded to the structure’s surface and enable acoustic events from the loaded structure to be located by triangulation. Instrumentation has been enveloped to capture and parameterise the sensor data in a form suitable for low-bandwidth storage and transmission.

Citation Download Citation

Peter Foote, Tony Martin, and Ian Read "Acoustic-sensor-based detection of damage in composite aircraft structures", Proc. SPIE 5272, Industrial and Highway Sensors Technology, (8 March 2004); https://doi.org/10.1117/12.516056

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