Structural Engineering and Mechanics

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Effect of the composite patch beveling on the reduction of stresses in 2024-T3 Aluminum structure damaged and repaired by composite, hybrid patch repair

  • Belhoucine, A. (Department of Mechanical Engineering, LMPM, University of Sidi Bel Abbes) ;
  • Madani, K. (Department of Mechanical Engineering, LMPM, University of Sidi Bel Abbes)
  • Received : 2020.09.10
  • Accepted : 2021.12.29
  • Published : 2022.04.10
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Abstract

The use of composite patches for the reduction of stresses at the level of the damaged zone in aeronautical structures has experienced rapid expansion given its advantages over conventional mechanical processes (riveting, bolting, etc.). Initially, The research axes in this field were aimed at choosing suitable mechanical properties for the composite and the adhesive, then to optimize the shape of the composite patch in order to ensure good load transfer and avoid having a debonding at the level of the edges essentially for the case of a repair by single side where the bending moment is present due to the non-symmetry of the structure. Our work falls within this context; the objective is to analyze by the finite element method the fracture behavior of a damaged plate repaired by composite patch. Stress reduction at the edge is accomplished by creating a variable angle chamfer on the composite patch. The effects of the crack length, the laminate sequence and the nature of the patch as well as the use of a hybrid patch were investigated. The results show clearly that a beveled patch reduces the stress concentrations in the damaged area and even at its edges. The hybrid patch also ensures good durability of the repair by optimizing its stacking sequence and the location of the different layers according to the fibers orientations.

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References

  1. ABAQUS/CAE (2015), Ver 6.14 User's Manual, Hibbitt, Karlsson & Sorensen, Inc.
  2. Abd-Elhady, A.A., Sallam, H.E.D.M., Alarifi, I.M., Malik, R.A. and El-Bagory, T.M. (2020), "Investigation of fatigue crack propagation in steel pipeline repaired by glass fiber reinforced polymer", Compos. Struct., 242, 112189. https://doi.org/10.1016/j.compstruct.2020.112189.
  3. Aglan, H.A., Gan, Y.X., Wang, Q.Y. and Kehoe, M. (2002), "Design guidelines for composite patches bonded to cracked aluminum substrates", J. Adhes. Sci. Technol., 16(2), 197-211. https://doi.org/10.1163/156856102317293704.
  4. Andrew, J.J. and Arumugam, V. (2017), "Effect of patch hybridization on the tensile behavior of patch repaired glass/epoxy composite laminates using acoustic emission monitoring", Int. J. Adhes. Adhesiv., 74, 155-166. https://doi.org/10.1016/j.ijadhadh.2017.01.014.
  5. Baker, A.A., Rose, L.F. and Jones, R. (2003), Advances in the Bonded Composite Repair of Metallic Aircraft Structure, Elsevier.
  6. Bhatia, G.S. and Arockiarajan, A. (2019), "Fatigue studies on patch repaired carbon/epoxy woven composites", Compos. Part B, 175, 107121. https://doi.org/10.1016/j.compositesb.2019.107121.
  7. CADEC (1998), Ver 20.04.99, Copyright, Ever J. Barbero. .
  8. Campilho, R.D.S.G., De Moura, M.F.S.F. and Domingues, J.J.M.S. (2005), "Modelling single and double-lap repairs on composite materials", Compos. Sci. Technol., 65(13), 1948-1958. https://doi.org/10.1016/j.compscitech.2005.04.007.
  9. Cheuk, P.T., Tong, L., Wang, C.H., Baker, A. and Chalkley, P. (2002), "Fatigue crack growth in adhesively bonded composite-metal double-lap joints", Compos. Struct., 57(1-4), 109-115. https://doi.org/10.1016/S0263-8223(02)00074-0.
  10. FRANC2D, A. (2010), Crack Propagation Simulator for Plane Layered Structures, New York.
  11. Jiang, H., Ren, Y. and Liu, Z. (2019), "Numerical prediction for effects of fiber orientation on perforation resistance behaviors of patch-repaired composite panel subjected to projectile impact", Thin Wall. Struct., 144, 106325. https://doi.org/10.1016/j.tws.2019.106325.
  12. Kaci, D.A., Madani, K., Mokhtari, M., Feaugas, X. and Touzain, S. (2017), "Impact of composite patch on the J-integral in adhesive layer for repaired aluminum plate", Adv. Aircraft Spacecraft Sci., 4(6), 679-699. http://dx.doi.org/10.12989/aas.2017.4.6.679.
  13. Kaddouri, N., Madani, K., Rezgani, L., Mokhtari, M. and Feaugas, X. (2020), "Analysis of the effect of modifying the thickness of a damaged and repaired plate by composite patch on the J-Integral; effect of bonding defects", J. Brazil. Soc. Mech. Sci. Eng., 42, 426. https://doi.org/10.1007/s40430-020-02515-y.
  14. Khan, S.M. and Essaheb, M. (2017), "Effect of patch thickness on the repair performance of bonded composite repair in cracked aluminum plate", Mater. Today: Proceed., 4(8), 9020-9028. https://doi.org/10.1016/j.matpr.2017.07.255.
  15. Liu, X., He, Y., Qiu, D. and Yu, Z. (2019), "Numerical optimizing and experimental evaluation of stepwise rapid high-pressure microwave curing carbon fiber/epoxy composite repair patch", Compos. Struct., 230, 111529. https://doi.org/10.1016/j.compstruct.2019.111529.
  16. Madani, K., Touzain, S., Feaugas, X., Cohendouz, S. and Ratwani, M. (2010), "Experimental and numerical study of repair techniques for panels with geometrical discontinuities", Comput. Mater. Sci., 48(1), 83-93. https://doi.org/10.1016/j.commatsci.2009.12.005.
  17. Mahadesh Kumar, A. and Hakeem, S.A. (2000), "Optimum design of symmetric composite patch repair to center cracked metallic sheet", Compos. Struct., 49(3), 285-292. https://doi.org/10.1016/S0263-8223(00)00005-2.
  18. Naboulsi, S. and Mall, S. (1996), "Modeling of a cracked metallic structure with bonded composite patch using the three layer technique", Compos. Struct., 35(3), 295-308. https://doi.org/10.1016/0263-8223(96)00043-8.
  19. Papanikos, P., Tserpes, K.I. and Pantelakis, S. (2007), "Initiation and progression of composite patch debonding in adhesively repaired cracked metallic sheets", Compos. Struct., 81(2), 303-311. https://doi.org/10.1016/j.compstruct.2006.08.022.
  20. Pastor, M.L., Balandraud, X., Grediac, M. and Robert, J.L. (2008), "On the fatigue response of aluminum specimens reinforced with carbon-epoxy patches", Compos. Struct., 83(3), 237-246. https://doi.org/10.1016/j.compstruct.2007.10.038.
  21. Ramji, M., Srilakshmi, R. and Prakash, M.B. (2013), "Towards optimization of patch shape on the performance of bonded composite repair using FEM", Compos. Part B: Eng., 45(1), 710-720. https://doi.org/10.1016/j.compositesb.2012.07.049.
  22. Shih, C.F., Moran, B. and Nakamura, T. (1986), "Energy release rate along a three dimensional crack front in a thermally stressed body", Int. J. Fract., 30, 79-102. https://doi.org/10.1007/BF00034019.
  23. Zarrinzadeh, H., Kabir, M.Z. and Deylami, A. (2017), "Crack growth and debonding analysis of an aluminum pipe repaired by composite patch under fatigue loading", Thin Wall. Struct., 112, 140-148. https://doi.org/10.1016/j.tws.2016.12.023.