Structural Engineering and Mechanics

  • 제18권3호
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  • Pages.277-286
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  • 2004
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Fatigue life enhancement of defective structures by bonded repairs

  • Wang, Q.Y. (Department of Civil Engineering & Mechanics, Sichuan University) ;
  • Kawagoishi, N. (Department of Mechanical Engineering, Kagoshima University) ;
  • Chen, Q. (Department of Mechanical Engineering, Kagoshima University) ;
  • Pidaparti, R.M. (Department of Mechanical Engineering, Purdue University)
  • 투고 : 2002.09.24
  • 심사 : 2004.06.24
  • 발행 : 2004.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

Defective metallic components and structures are being repaired with bonded composite patches to improve overall mechanical and fatigue properties. In this study, fatigue crack growth tests were conducted on pre-cracked 7075/T6 Aluminum substrates with and without bonded Boron/epoxy patches. A considerable increase in the fatigue life and a decrease in the stress intensity factor (SIF) were observed as the number of patch plies increased. The experimental results demonstrate that the patch configurations and patch thickness can enhance fatigue life by order of magnitude. Quantitative comparisons between analytical and experimental data were made, and the analytical model based on a modified Rose's analytical solution appears to best estimate the fatigue life.

키워드

참고문헌

  1. Anderson, T.L. (1991), Fracture Mechanics, Fundamental and Application, CRC Press, Inc.
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  4. Muller, R., Fredell, R., Guijt, C. and Dally, R. (1999), "Experimental verification of Rose's constant K solution in bonded crack patching", Applied Composite Materials, 6(4), 205-216. https://doi.org/10.1023/A:1008853712561
  5. Paul, J.B. and Jones, R. (1994), "Bonded composite repair of cracked load-bearing holes", Engineering Fracture Mechanics, 48(3), 455-461. https://doi.org/10.1016/0013-7944(94)90134-1
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  7. Rose, L.R.F. (1982), "A cracked plate repaired by bonded reinforcements", Int. J. Fracture, 18(2), 135-144. https://doi.org/10.1007/BF00019638
  8. Schubbe, J.J. and Mall, S. (1999), "Investigation of a cracked thick aluminum panel repaired with a bonded composite patch", Engineering Fracture Mechanics, 64(3), 305-323. https://doi.org/10.1016/S0013-7944(99)00076-4
  9. Seo, D.C. and Lee, J.J. (2002), "Fatigue crack growth behavior of aluminum plate repaired with composite patch", Composite Structures, 57(1-4), 323-330. https://doi.org/10.1016/S0263-8223(02)00095-8
  10. Wang, Q.Y. and Pidaparti, R.M. (2002), "Static characteristics and fatigue behavior of composite-repaired aluminum plates", Composite Structures, 56(2), 151-155. https://doi.org/10.1016/S0263-8223(01)00176-3

피인용 문헌

  1. Super Long Life Fatigue of AE42 and AM60 Magnesium Alloys vol.306-308, pp.1662-9795, 2006, https://doi.org/10.4028/www.scientific.net/KEM.306-308.181
  2. Fatigue in Ti-6Al-4V at Very High Cycles vol.561-565, pp.1662-9752, 2007, https://doi.org/10.4028/www.scientific.net/MSF.561-565.259