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Fatigue Crack Growth Behavior of and Recognition of AE Signals from Composite Patch-Repaired Aluminum Panel  

Kim, Sung-Jin (Department of Mechanical Engineering, Inha University)
Kwon, Oh-Yang (Department of Mechanical Engineering, Inha University)
Jang, Yong-Joon (Department of Mechanical Engineering, Inha University)
Publication Information
Journal of the Korean Society for Nondestructive Testing / v.27, no.1, 2007 , pp. 48-57 More about this Journal
Abstract
The fatigue crack growth behavior of a cracked and patch-repaired Ah2024-T3 panel has been monitored by acoustic emission(AE). The overall crack growth rate was reduced The crack propagation into the adjacent hole was also retarded by introducing the patch repair. AE signals due to crack growth after the patch repair and those due to debonding of the plate-patch interface were discriminated by usiag the principal component analysis. The former showed high center frequency and low amplitude, whereas the latter showed long rise tine, low frequency and high amplitude. This type of AE signal recognition method could be effective for the prediction of fatigue crack growth behavior in the patch-repaired structures with the aid of AE source location.
Keywords
Composite Patch; Fatigue Crack; Acoustic Emission(AE); Source Location; Principal Component Analysis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 A. A. Baker, 'Introduction and overview,' Ch. 1 in Advances in the Bonded Composite Repair of Metallic Aircraft Structure, Elsevier, Oxford, UK, pp. 1-18, (2002)
2 김만원, 박재학, '보강된 판내에 존재하는 균열의 해석 및 보수,' 한국항공우주학회지, 제24권 제6호, pp. 86-97, (1996)
3 C. Soutis, D-M. Duan and P. Goutas, 'Compressive behaviour of CFRP laminates repaired with adhesively bonded external patches,' Composite Structures, Vol. 45, pp. 289-301, (1999)   DOI   ScienceOn
4 J. L. Rose, K. Rajana and J. N. Barshinger, 'Guided wave for composite patch repair of aging aircraft,' Review of Progress in Quantitative NDE, Vol. 15, pp. 1291-1298, (1996)
5 김위대, '복합재 패취를 이용한 노후 항공기의 중앙균열 보수에 관한 연구', 한국항공우주학회지, 제27권 제8호, pp. 71-78, (1999)
6 Oh-Yang Kwon and Seung-Hwan Lee, 'Acousto-ultrasonic evaluation of adhesively bonded CFRP-aluminum joints,' NDT&E International, Vol. 32, pp. 153-160, (1999)   DOI   ScienceOn
7 Jung-Chan Kim, Oh-Yang Kwon and Sung-Jin Kim, 'Detection of fatigue damage in aluminum thin plates with rivet holes by acoustic emission,' J. KSNT, Vol. 23, No.3, pp.246-253, (2003)
8 정기현, 양원호, 조명래, '보강재로 보수된 균열평판의 파괴역학적 해석 (II),' 대한기계학회논문집 A, 제24권 제9호, pp. 2246-2251, (2000)
9 N. Rastogi, S. R. Soni and J. J. Denney, 'Analysis of bonded composite patch repaired metallic structures: an overview,' Proc. 39th AIAA SDM Conf., pp. 1578-1588, (1998)
10 강치행, 박근석, '페이스트형 접착제를 이용한 균열 패칭 수리 기법의 설험적 연구', 한국항공우주학회지, 제29권 제4호, pp.116-122, (2001)
11 Jeong-Kon Kim, Oh-Yang Kwon and Yong-Kyu Kang, 'A practical method of acoustic emission source location in anisotropic composite laminates,' J. KSNT, Vol. 23, No.3, pp.237-245, (2003)
12 J. J. Schubbe and S. Mall, 'Fatigue behavior in thick aluminum panels with a composite repair,' Proc. 39th AIAA SDM Conference, pp. 2434-2443, (1998)