NDLI: Damage detection and identification in composite aircraft components

Content Provider	IEEE Xplore Digital Library
Author	Edmonds, J. Hickman, G.
Copyright Year	2000
Description	Author affiliation: Innovative Dynamic Inc., Ithaca, NY, USA (Edmonds, J.)
Abstract	Commercial and military aircraft such as the V-22 Osprey are being constructed using substantial amounts of advanced light-weight composite materials. Impact damage as well as fatigue stress can cause internal delaminations leading to catastrophic part failure without prior visible warning. A reliable health monitor system can enable condition-based maintenance. This can significantly reduce life cycle costs by minimizing inspection time and effort, and by extending the useful life of new and aging aerospace structural components. In this paper we describe a smart structures approach for the detection and assessment of damage in critical composite structures. An array of piezoelectric transducers is attached to the structure for both actuation and sensing. The system actively interrogates the structure with wideband chirp excitation of multiple actuators. Statistical analysis of the changes in the vibration response is used to detect, localize, and assess the severity of damage in the structure. Damage is indicated when the vibration signatures differ from a known baseline condition. Pattern recognition techniques are employed to distinguish damage responses from those due to benign changes such as temperature or loading variations. This model-independent damage detection approach can be applied without extensive algorithm training. Tests were conducted in the fatigue test facility at Bell Helicopter on the V-22 pendulum yoke. Results presented here demonstrate that vibration signature analysis is a viable technique for in-situ damage detection of advanced composite aircraft components.
Starting Page	263
Ending Page	269
File Size	1031406
Page Count	7
File Format	PDF
ISBN	0780358465
ISSN	1095323X
DOI	10.1109/AERO.2000.877902
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-03-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Military aircraft Fatigue Aircraft manufacture Composite materials Internal stresses Delamination Condition monitoring Maintenance Costs Inspection
Content Type	Text
Resource Type	Article
Subject	Aerospace Engineering Space and Planetary Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in