Health monitoring of aerospace composite structures – Active and passive approach |
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| Authors: | WJ Staszewski S Mahzan R Traynor |
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| Affiliation: | 1. Dynamics Research Group, Department of Mechanical Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom;2. Lambda Photmetrics Ltd., The UK Division of Polytec, Lambda House, Batford Mill, Harpenden, Herts AL5 5BZ, United Kingdom;1. Department of Industrial Engineering, Aerospace Section, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy;2. Italian Aerospace Research Center – CIRA, Via Maiorise, 81043 Capua, Italy;1. Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea;2. Rocket Engine Team, Korea Aerospace Research Institute, 169-84 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea;1. Aerospace Non-Destructive Testing Laboratory, Faculty of Aerospace Engineering, TU Delft, Kluyverweg 1, 2629 HS Delft, The Netherlands;2. LAETA, IDMEC, Instituto Superior Técnico, University of Lisbon, Avenida Rovisco Pais, 1, 1049-001 Lisboa, Portugal;3. School of Aerospace, Mechanical & Manufacturing Engineering, RMIT University, 115 Queensberry Street, Melbourne, VIC 3053, Australia;1. Vrije Universiteit Brussel (VUB), Acoustics and Vibration Research Group (AVRG), Belgium;2. Vrije Universiteit Brussel (VUB), Brussels Photonics Team (B-phot), Belgium;3. University of Leuven (KUL) & Universiteit Hasselt, I-BioStat, Belgium;4. Vrije Universiteit Brussel (VUB), Department ELEC, Belgium;5. University of Antwerp, Op3Mech Research Group, Belgium;6. Helwan University, Cairo, Egypt;1. Institute of Fundamentals of Machinery Design, Silesian University of Technology, 18A Konarskiego Street, 44-100 Gliwice, Poland;2. Air Force Institute of Technology, 6 Ks. Boleslawa Street, 01-494 Warsaw, Poland;1. Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, Jiangsu, China;2. State Key Laboratory of Structural Analysis for Industry Equipments, School of Aeronautics and Astronautics, Dalian University of Technology, Dalian 116024, Liaoning, China |
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| Abstract: | Impact damage is one of the major concerns in maintenance of aircraft structures built from composite materials. Damage detection in composite materials can be divided into active and passive approaches. The active approach is usually based on various non-destructive techniques utilizing actuators and/or receivers. In contrast passive approaches do not involve any actuators; receivers are used to “sense and/or hear” any perturbations caused by possible hidden damage. Often strain data are used to localize impacts and estimate their energy. The assumption is that damage occurs above well-defined energy of impacts. The paper illustrates one active and one passive method recently developed for impact damage detection. The first method, based on guided ultrasonic waves, utilises 3-D laser vibrometry and does not require any signal processing. Simple laser scans, revealing the change in Lamb wave response amplitudes, have been used to locate delamination and estimate its severity in a composite plate. In contrast, the second method does not require any sophisticated instrumentation but relies on advanced signal processing. An array of piezoceramic sensors has been to detect strain waves transmitted from an impact applied to the composite aircraft structure. The modified multilateration procedure with Genetic Algorithms has been used to locate impact position. |
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