Evaluation of Stress Intensity Factor in a Center Cracked Curved Plate Repaired with Stop Holes, Composite Patch, and Hybrid Methods

محورهای موضوعی : Applied Mechanics

Sirvan Mohammadi ¹ (Department of Mechanical Engineering, University of Kurdistan, Sanandaj, Iran)
S Daryaei ² (Department of Mechanical Engineering, University of Kurdistan, Sanandaj, Iran)

تاریخ دریافت : 1401/06/11 تاریخ پذیرش : 1401/09/05 تاریخ انتشار : 1401/12/10

کلید واژه: Crack repair, Stress intensity factor, Fracture mechanics, Composite patch, Stop holes,

چکیده مقاله :

Stop holes and composite patches are the most important methods used to repair cracked plates. In this research, using a 3D finite element method and considering different materials for a composite patch, the effect of separate and simultaneous use of stop holes and composite patch (one-sided and two-sided) on the reduction of SIF in a cracked curve plate is investigated. The best position and arrangement of crack stop holes and the best dimensions and material used for the composite patch are determined. Then, the effect of the radius of curvature of the plate on the efficiency of various repair methods is investigated. The results show that with increasing the radius of curvature of the plate, the SIF value decreases in all repair methods and the efficiency of the patch improves in the cases of using the patch or the hybrid method. Besides, from the radius of curvature of approximately 5 meters onwards, a further increase in the radius of curvature does not affect the efficiency of various repair methods. Simultaneous use of the graphite-epoxy double-sided patch and stop holes reduces SIF by 79.9% compared to unrepaired condition.

چکیده انگلیسی:

Stop holes and composite patches are the most important methods used to repair cracked plates. In this research, using a 3D finite element method and considering different materials for a composite patch, the effect of separate and simultaneous use of stop holes and composite patch (one-sided and two-sided) on the reduction of SIF in a cracked curve plate is investigated. The best position and arrangement of crack stop holes and the best dimensions and material used for the composite patch are determined. Then, the effect of the radius of curvature of the plate on the efficiency of various repair methods is investigated. The results show that with increasing the radius of curvature of the plate, the SIF value decreases in all repair methods and the efficiency of the patch improves in the cases of using the patch or the hybrid method. Besides, from the radius of curvature of approximately 5 meters onwards, a further increase in the radius of curvature does not affect the efficiency of various repair methods. Simultaneous use of the graphite-epoxy double-sided patch and stop holes reduces SIF by 79.9% compared to unrepaired condition.

منابع و مأخذ:

1. Domazet Z., 1996, Comparison of fatigue crack retardation methods, Engineering Failure Analysis 3(2): 137-147.


2. Shin C.S., Wang C.M., Song P.S., 1996, Fatigue damage repair: a comparison of some possible methods, International Journalof Fatigue 18(8): 535-546.


3. Shin C.S., Cai C.Q., 2000, A model for evaluating the effect of fatigue crack repair by the infiltration method, Fatigue& Fracture of Engineering Materials & Structures 23(10): 835-845.


4. Wang Z.Y., Wang Q.Y., Li L., Zhang N., 2017, Fatigue behavior of CFRP strengthened open-hole steel plates, Thin-Walled Structures 115: 176-187.


5. Ayatollahi M.R., Razavi S.M.J., Sommitsch C., Moser C., 2016, Fatigue life extension by crack repair using double stop-hole technique, Materials Science Forum 879: 3-8.


6. Razavi S.M.J., Ayatollahi M.R., Sommitsch C., Moser C., 2017, Retardation of fatigue crack growth in high strength steel S690 using a modified stop-hole technique, Engineering Fracture Mechanics 169: 226-237.


7. Broek D., 2002, Elementary Engineering Fracture Mechanics, London, Kluwer Academic Publishers.


8. Song P.S., Shieh Y.L., 2004, Stop drilling procedure for fatigue life improvement, International Journalof Fatigue 26: 1333-1339.


9. Pedersen P., 2004, Design study of hole positions and hole shapes for crack tip stress releasing, Structural and Multidisciplinary Optimization 28: 243-251.


10. Ayatollahi M.R., Razavi S.M.J., Chamani H.R., 2014, A numerical study on the effect of symmetric crack flank holes on fatigue life extension of a SENT specimen, Fatigue& Fracture of Engineering Materials & Structures  37(10): 1153-1164.


11. Makabe C., Murdani A., Kuniyoshi K., Irei Y., Saimoto A., 2009, Crack-growth arrest by redirecting crack growth by drilling stop holes and inserting pins into them, Engineering Failure Analysis 16: 475-483.


12. Günther G., Maier A., 2010, Composite repair for metallic aircraft structures development and qualification aspects, 27th International Congress of the Aeronautical Sciences, ICAS 2010.


13. Ramakrishna C.h., Krishna B.J., Rajashekar S., Sivateja N., 2017, Finite element analysis of the composite patch repairs of the plates, International Journal of Engineering Research and Applications 7(2-2): 10-18.


14. Stuart M., 2010, Static Strength Testing of Bonded Composite Patch Repair for Ship Plating, Bachelor of Engineering (Naval Architecture), University of New South Wales, School of Mechanical and Manufacturing Engineering.


15. Mohammadi S., 2020, Parametric investigation of one-sided composite patch efficiency for repairing crack in mixed mode considering different thicknesses of the main plate, Journal of Composite Materials 54(22): 3067-3079.


16. Makwana A., Shaikh A.A., Bakare A.K., Saikrishna C., 2018, 3D Numerical investigation of aluminum 2024-T3 plate repaired with asymmetric and symmetric composite patch, Materials Today: Proceedings 5(11): 23638- 23647.


17. Walde Sh., Lilhare S., 2016, Finite element analysis of composite patch repaired cracked metal plates and effect of patch thickness on SIF, International Journalof Engineering Research & Technology 4(3): 43-46.


18. Karr D.G., Douglas A., Ferrari C., Cao T., Ong K.T., Si N., He J., Baloglu C., White P., Parra-Montesinos G.J., 2016, Fatigue testing of composite patches for ship plating fracture repair, Shipsand Offshore Structures 12(6): 747-755.


19. Ouzitouna W.N., Oudad W., Belhamiani M., Belhadri D.E., Zouambi L., 2020, Elastoplastic analysis of cracked Aluminum plates with a hybrid repair technique using the bonded composite patch and drilling hole in opening mode I, Frattura ed Integrita Strutturale 52: 256-268.


20. Fu M., Mallick P.K., 2001, Fatigue of hybrid (adhesive/bolted) joints in SRIM composites, International Journal of Adhesion and Adhesives 21(2): 145-159.


21. Maleki H., Chakherlou T., 2018, A new method for repairing aircraft structures containing aluminum alloy 2024-T3 using a combination of composite patch and bolt clamping, Journalof Composite Materials 52(30): 4203-4218.


22. Wang J., Baker A., Chang P., 2019, Hybrid approaches for aircraft primary structure repairs, Composite Structures 207: 190-203.


23. Hosseini-Toudeshky H., Mohammadi B., Daghyani H.R., 2006, Mixed-mode fracture analysis of aluminium repaired panels using composite patches, Composites Science and Technology 66: 188-198.


24. Mohamed S., Djamel O., 2014, Influence of geometrical parameters and mechanical properties of patch repair of structures damaged by fatigue, International Journalof Materials Science and Engineering 2(2): 131-135.


25. Rooke D.P., Cartwright D.J., 1976, Compendium of Stress Intensity Factors, HMSO Ministry of Defence, Procurement


26. Walde Sh., Lilhare S., 2016, Finite element analysis of composite patch repaired cracked metal plates and effect of patch thickness on SIF, International Journalof Engineering Research & Technology 4(3): 43-46.


27. Albedah A., Mohammed S.M., Bouiadjra B.B., 2018, Effect of the patch length on the effectiveness of one-sided bonded composite repair for aluminum panels, International Journal of Adhesionand Adhesives 81: 83-89.


28. Saeed Kh., 2017, Adhesive effect on the performance of the repair efficiency of bonded aluminum alloy, Proceedings of 93rd IIER International Conference, Los Angeles, USA.


29. Mohammadi S., Yousefi M., Khazaei M., 2020, A review on composite patch repairs and the most important parameters affecting its efficiency and durability, Journal of Reinforced Plasticsand Composites 40(1-2): 3-15.