Industrial application of a low-cost structural health monitoring system in large-scale airframe tests

Middleton, Ceri A ORCID: 0000-0001-9488-9717, Amjad, Khurram, Greene, Richard J ORCID: 0000-0002-5373-0598, Hack, Erwin ORCID: 0000-0003-1547-9889, Harris, Linden, Kupferschmid, André, Lambert, Peter R and Patterson, Eann A ORCID: 0000-0003-4397-2160 (2024) Industrial application of a low-cost structural health monitoring system in large-scale airframe tests. The Journal of Strain Analysis for Engineering Design, 59 (3). pp. 218-225.

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Official URL: http://dx.doi.org/10.1177/03093247231222951

Abstract

<jats:p> A small, novel, integrated SHM system has been deployed during full-scale testing of a wing fatigue test for several weeks and a fuselage pressurisation test for several months. Complementary NDE measurement techniques were combined, with inputs from visible and infrared optical sensors, as well as resistance strain gauges. Sensor units were deployed at regions of interest and integrated board computers permitted near real-time data processing. The outputs were full-field measurement datasets from digital image correlation and thermoelastic stress analysis systems. Changes in these datasets in the regions of interest were successfully quantified using orthogonal decomposition and were indicative of changes in the condition of the structure. The results from these case studies demonstrate that this system can be successfully deployed in spatially restricted areas within airframe structures to monitor crack growth. The low cost and small footprint of the system presents the opportunity for installation of arrays of similar sensors for both test and in-service data collection. Near real-time data processing would allow timely reporting to service engineers, informing maintenance or operational decisions. </jats:p>

Item Type:	Article
Divisions:	Faculty of Science and Engineering > School of Engineering
Depositing User:	Symplectic Admin
Date Deposited:	06 Dec 2023 08:36
Last Modified:	08 Apr 2024 17:38
DOI:	10.1177/03093247231222951
Related URLs:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3177184