Abstract
Aircraft structures constructed from new and advanced materials will become more common in the near future, starting with the use of the Fibre Metal Laminate Glare in large parts of the Airbus A-380 fuselage. These materials are primarily used because of their excellent damage tolerance properties. However, questions about maintenance and repair of such structures need to be answered before such new materials can be used. These questions include whether new and advanced materials can be repaired in a conventional way, which would not only be preferable from the operator's point of view (no change in tools, maintenance procedures, and personnel training), but also from the manufacturer's point of view (Structural Repair Manuals similar to aluminium structures). A Glare demonstrator panel has been designed and applied to an Airbus A-310 and research into the repairability of Glare has been performed to answer these questions. Apart from looking into the repairability of Glare structures, the material itself is also investigated as material for bonded repair patches. Bonded repair many times proves to be a more viable solution than conventional riveted repair due to its more efficient load transfer. Important aspects of bonded (Glare) repair are under investigation to show that bonded patch repair is not only working for the ageing aircraft of several Air Forces around the world, but is also a promising candidate for safe and cost-effective repairs to ageing and new (incidental damage) aircraft of commercial operators. This research is conducted cooperatively by Delft University of Technology and the United States Air Force Academy and has led to two real-life repairs on a C-5A “Galaxy”.
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References
Taddey, F. O., ‘Inspection and maintenance’, in Fibre Metal Laminates and Introduction, A. Vlot and J. W. Gunnink (eds), Kluwer Academic Publishers, Dordrecht, The Netherlands, 2001.
A310 MRT GAF, Structural Repair Manual, SRM Supplement Glare Panel German Air Force, Registration 10+25, Manufacturer serial number 484, for change 06698A. Issue Sep01/99.
Fredell, R. S., ‘Damage Tolerant Repair Techniques for Pressurized Aircraft Fuselages’, Ph.D. Thesis, Delft University of Technology, Delft, The Netherlands, 1994.
Ipenburg, G., ‘Analysis of Stresses in the Periphery of Bonded GLARE Repair Patches’, Master Thesis, Delft University of Technology, Delft, The Netherlands, 1997.
Denney, J. J., ‘Fatigue Response of Cracked Aluminum Panel with Partially Bonded Composite Patch’, Thesis, AFIT/GAE/ENY/95D-7, Dayton, USA, Force Institute of Technology, Air, 1995.
Verhoeven, S., ‘In-Service Effects on Crack Growth under Bonded Composite Repairs,’ Master Thesis, Delft University of Technology, Delft, The Netherlands, 1998.
Broek, D., ‘Residual Strength and Fatigue Crack Growth in Two Aluminium Alloy Sheets at Temperatures Down to ?75 ?C’, NLR Report TR 72096, NLR, The Netherlands, 1972.
Massar, J. J. A., ‘Calculation of Stress Intensity Factors of a Bonded Repair by Means of Finite Element Method’, Preliminary Thesis, Delft University of Technology, Delft, The Netherlands, 1998.
Rose, L. R. F., ‘Theoretical Analysis of Crack Patching’, in Bonded Repair of Aircraft Structures, A. A. Baker and R. Jones (eds), Martinus Nijhoff Publishers, Dordrecht, The Netherlands, 1988, pp. 7–106.
Wang, C. H. et al., ‘Analysis of Out-of-Plane Bending in One-Sided Bonded Repair’, International Journal of Solids and Structures 35(14), 1998, 165–1675.
Rose, L. R. F., ‘A Cracked Plate Repaired by Bonded Reinforcements’, International Journal of Fracture 18(2), 1982, 13–144.
Mindlin, R. D., ‘Influence of Rotary Inertia and Shear on Flexural Motions of Isotropic, Elastic Plates’, Journal of Applied Mechanics 18, 1951, 3–38.
Ratwani, M. M., ‘Cracked, Adhesively Bonded Laminate Structures’, AIAA Journal 17(9), 1979, 98–994.
Guijt, C. B., Verhoeven, S. and Greer, J.M., ‘Bonded Repairs for C-5A Fuselage Crown Cracking’, in Fibre Metal Laminates and Introduction, A. Vlot and J. W. Gunnink (eds), Kluwer Academic Publishers, Dordrecht, The Netherlands, 2001.
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Woerden, H.J.M., Sinke, J. & Hooijmeijer, P.A. Maintenance of Glare Structures and Glare as Riveted or Bonded Repair Material. Applied Composite Materials 10, 307–329 (2003). https://doi.org/10.1023/A:1025593314780
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DOI: https://doi.org/10.1023/A:1025593314780