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Assessing composite patch repair efficiency in thick and high elastic modulus structures

  • Mohammed Baghdadi (LMPM, Department of Mechanical Engineering, University of Sidi Bel Abbes)
  • Received : 2024.07.06
  • Accepted : 2024.11.01
  • Published : 2025.09.25
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Abstract

The effectiveness of structural repair using composite patches depends on both geometric and mechanical parameters, including the properties of the patch, the adhesive joint, and the repaired structure. In this study, the finite element method (FEM) was employed to investigate the influence of repaired structure parameters effect, specifically thickness and Young's modulus, on the repair efficiency. Unlike previous studies, which focus on aerospace applications, this work explores the potential to extend composite patch repair techniques to other domains such as hydrocarbon, marine, and civil engineering, where structures are characterized by higher Young's modulus and thicknesses. The analysis examines the stress intensity factor (SIF) at crack tips on both the repaired and unrepaired faces, as well as shear stresses within the adhesive layer. The results reveal that while single-patch repairs are effective for thinner structures (e.g., aircraft fuselages under 4 mm), double-patch repairs are necessary for thicker structures, such as those in hydrocarbon or marine engineering, to stabilize cracks on both faces. Furthermore, using a thinner double patch repair provides similar SIF reductions as a thicker patch, offering significant mass savings-a critical factor in engineering design. These findings highlight the adaptability of composite repair techniques across various industries, demonstrating the potential for broader application beyond aerospace, with implications for enhanced structural integrity and reduced weight.

Keywords

References

  1. Aabid, A., Ibrahim, Y.E., Hrairi, M. and Ali, J.S.M. (2023), "Optimization of structural damage repair with single and double-sided composite patches through the finite element analysis and Taguchi method", Mater., 16(4), 1581. https://doi.org/10.3390/ma16041581.
  2. Alderliesten, R.C. (2009), "Damage tolerance of bonded aircraft structures", Int. J. Fatig., 31, 1024-1030. https://doi.org/10.1016/j.ijfatigue.2008.05.001.
  3. Althahban, S.M., Nowier, M., El-Sagheer, I., Abd-Elhady, A., Sallam, H. and Reda, R. (2024), "Experimental and numerical analysis of the behavior of rehabilitated aluminum structures using chopped strand mat GFRP composite patches", Front. Eng. Built Environ., 4(3), 149-168. https://doi.org/10.1108/FEBE-03-2024-0006.
  4. Aminallah, S., Fekih, S.M. and Sahli, A. (2023), "Optimization of scarf patch stacking sequences using the design of experiments method", Adv. Aircraft Spacecraft Sci., 10(4), 335. https://doi.org/10.12989/aas.2023.10.4.335.
  5. Baghdadi, M., Serier, B., Salem, M., Zaoui, B. and Kaddouri, K. (2019), "Modeling of a cracked and repaired Al 2024T3 aircraft plate: effect of the composite patch shape on the repair performance: Effect of the composite patch shape on the repair performance", Frattura ed Integrità Strutturale, 13(50), 68-85. https://doi.org/10.3221/IGF-ESIS.50.08.
  6. Baker, A.A. (1984), "Repair of cracked or defective metallic aircraft components with advanced fiber composites an overview of Australian work", Compos. Struct., 2(2), 153-181. https://doi.org/10.1016/0263-8223(84)90025-4.
  7. Benyahia, F., Albedah, A. and Bouiadjra, B.B. (2014), "Analysis of the adhesive damage for different patch shapes in bonded composite repair of aicraft structures", Mater. Des., 54, 18-24. https://doi.org/10.1016/j.matdes.2013.08.024.
  8. Bouchiba, M.S. and Serier, B. (2016), "New optimization method of patch shape to improve the effectiveness of cracked plates repair", Struct. Eng. Mech., 58(2), 301-326. https://doi.org/10.12989/sem.2016.58.2.301.
  9. Bouchiba, S. and Serier, B. (2016), "New optimization method of patch shape to improve the effectiveness of cracked plates repair", Struct. Eng. Mech., 58(2), 301-326. https://doi.org/10.12989/sem.2016.58.2.301.
  10. Evans, G.B. (1988), Bonded Repair of Aircraft Structures, Eds. Baker, A.A. and Jones Martinus, R., Nijhoff Publishers, Dordrecht.
  11. Gkikas, G., Sioulas, D., Lekatou, A., Barkoula, N.M. and Paipetis, A.S. (2012), "Enhanced bonded aircraft repair using nano-modified adhesive", Mater. Des., 41, 394-402. https://doi.org/10.1016/j.matdes.2012.04.052
  12. Hu, J., Kang, R., Fang, J., Chen, S., Xuan, S., Zhou, J. and Tian, W. (2024), "An experimental and parametrical study on repair of cracked titanium airframe structures with single-side bonded carbon fiber reinforced polymer prepreg patches", Compos. Struct., 338, 118102. https://doi.org/10.1016/j.compstruct.2024.118102.
  13. 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. https://doi.org/10.12989/aas.2017.4.6.679.
  14. Lena, M.R., Klug, J.C. and Sun, C.T. (1998), "Composite patches as reinforcements and crack arrestors in aircraft structures", J. Aircraft, 35(2), 318-323. https://doi.org/10.2514/2.2302.
  15. Mhamdia, R., Bouadjra, B.B., Serier, B., Ouddad, W., Feaugas, X. and Touzain, S. (2012), "Stress intensity factor for repaires crack with bonded composite patch under thermo-mechanical loading", J. Reinf. Plast. Compos., 30, 416-424. https://doi.org/10.1177/0731684410397899.
  16. Mohamed, E., Mohamed, B., Houari, A., Amroune, S. and Campilho, R.D.S.G. (2024), "Effect of modifying the thickness of the plate at the level of the overlap length in the presence of bonding defects on the strength of an adhesive joint", Adv. Aircraft Spacecraft Sci., 11(1), 83. https://doi.org/10.12989/aas.2024.11.1.083.
  17. Nour, C.I., Fari Bouanani, M., Bachir Bouiadjra, B. and Serier, B. (2016), "Analysis of the adhesive damage betweencomposite and metallic adherends: Application to the repair of aircraft structures", Adv. Mater. Res., 5(1), 11-20. https://doi.org/10.12989/amr.2016.5.1.011.
  18. Oudad, W., Madani, K., Bouiadjra, B.B., Belhouari, M., Cohendoz, S., Touzain, S. and Feaugas, X. (2012), "Effect of humidity absorption by the adhesive on the performances of bonded composite repairs in aircraft structures", Compos. Part B: Eng., 43(8), 3419-3424. https://doi.org/10.1016/j.compositesb.2012.01.028
  19. Psarras, S., Giannoutsou, M.P. and Kostopoulos, V. (2024), "A design optimization study of step/scarf composite panel repairs, targeting the maximum strength and the minimization of material removal", J. Compos. Sci., 8(7), 248. https://doi.org/10.3390/jcs8070248.
  20. Qing, X.P., Beard, S.J., Kumar, A. and Hannum, R. (2006), "A real-time active smart patch system for monitoring the integrity of bonded repair on an aircraft structure", Smart Mater. Struct., 5, 66-73. https://doi.org/10.1088/0964-1726/15/3/N03.
  21. Ramji, M., Srilakshmi, R. and Bhanu Prakash, M. (2013), "Towards optimization of patch shape on the performance of bonded composite repair using FEM", Compos. B. Eng., 45, 710-720. https://doi.org/10.1016/j.compositesb.2012.07.049.
  22. Rasane, A., Kumar, P. and Khond, M. (2023), "Taguchi optimization of geometrical factors ofa polymer composite patch in crack repair'', Int. J. Automot. Mech. Eng., 20(2), 10386-10397. https://dci.org/10.15282/ijame20.2.2023.05.0803.
  23. Rose, L.R.F. (1982), "A cracked plate repaired by bonded reinforcement", Int. J. Fract., 18, 135-144. https://dci.org/101007/BF00019638. 101007/BF00019638
  24. Simulia (2014), Dassault Systems, Abaqus software. http://www.3ds.com. Version 6.14.
  25. Xiong, Y. and Raizenne, D. (1996), "Stress and failure analysis of bonded composite-to-metal joints", Bolted/Bonded Joints in Polymeric Composites, Florence, Italy