Abstract
The present paper investigates the failure of orthotropic laminates with a filled hole subjected to biaxial compression-tension loading. This is an idealised case that simulates a situation where the impact damaged laminate has been repaired by drilling a hole and then plugging the hole with a perfect-fit core made of a dissimilar material. The exact stress distribution in the laminate has been determined using the complex variable mapping method. These stresses are then employed in a fracture mechanics failure model to predict the failure load of a laminate with a filled hole under in-plane compression-dominated multi-axial loading. Failure strength predictions are compared to open hole results and experimental data.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Myhre, S. H. and Labor, J. D., 'Repair of Advanced Composite Structures', J. Aircraft 18(7), 1981, 546–552.
Matthews, F. L. and Rawlings, R. D., Composite Materials: Engineering and Science, 1st edn, Chapman & Hall, 1994.
Soutis, C. and Hu, F. Z., 'Design and Performance of Bonded Patch Repairs of Composite Structures', Proc. Inst. Mech. Eng., Part G, J. Aerospace Eng. 209, 1997, 105–129.
Hinkle, T. V., Van Es, J. and Ramsey, C. L., 'Battle Damage Repair of Composite Structures', AGARD-CP-402 17(1–11), 1986.
Robson, J. E., Matthews, F. L. and Kinloch, A. J., 'The Strength of Composite Repair Patches: A Laminate Analysis Approach', J. Reinf. Plastics Comp. 11, 1992, 729–742.
Soutis, C., Duan, D. M. and Goutas, P., 'Compressive Behaviour of CFRP Laminates Repaired with Adhesively Bonded External Patches', Composite Structures 45, 1999, 289–301.
Tsai, S. W., Composites Design, 4th edn, Think Composite Publishers 20(1–15), 1988.
Awerbuch, J. and Madhukar, M. S., 'Notched Strength in Composite Laminates: Predictions and Experiments-A Review', J. Reinf. Plastic Compos. 4, 1985, 3–159.
Tan, S. C., 'Stress Concentrations in Laminated Composites', Technomic Publishing Company Inc., Lancaster, Pennsylvania, USA, 1994.
Lekhnitskii, S. G., Anisotropic Plates, translated from the second Russian edition by Tsai S.W. and Cheron T., Gordon and Breach Science Publishers Inc., New York, 1968.
Eriksson, I. and Aronsson, C. G., 'Strength of Tensile Loaded Graphite/Epoxy Laminates Containing Cracks, Open and Filled Holes', J. Comp. Mater. 24, 1990, 456–482.
Backlund, J., 'Fracture Analysis of Notched Composites', Computers & Structures 13, 1981, 145–154.
Hindman, T. and Horn, W., 'Stress Analysis of an Orthotropic Plate with a Plugged Center Hole', in AIAA/ASME/ASCE/AHS Structures, Structural Dynamics & Materials Conference 4, 1996, pp. 2470–2478.
Vlattas, C. and Soutis, C., 'Composites Repair: Compressive Behaviour of CFRP Plates with Reinforced Holes', in 7th European Conf. on Composite Materials, Realising Their Commercial Potential, 2, ECCM-7, 14–16 May 1996, London, UK, pp. 87–92, Woodhead Publishing Ltd.
Green, A. E. and Zerna, W. Theoretical Elasticity, Clarendon Press, Oxford, 1954.
Soutis, C. and Fleck, N. A., 'Static Compression Failure of Carbon Fibre T800/924C Composite Plate with a Single Hole', J. Comp. Mater. 24, 1990, 536–558.
Soutis, C., 'Damage Tolerance of Open-Hole CFRP Laminates Loaded in Compression', Composites Engineering 4(3), 1994, 317–327.
Soutis, C., Curtis, P. T. and Fleck, N. A., 'Compressive Failure of Notched Carbon Fibre Composites', Proc. R. Soc. Lond. A 440, 1993, 241–256.
Soutis, C., 'Failure of Notched CFRP Laminates Due to Fibre Microbuckling: A Topical Review', J. Mech. Behav. Materials 6, 1996, 309–330.
Filiou, C. and Soutis, C., 'Stress Analysis of CFRP with a Reinforced Hole Subjected to Normal and Tangential Loads', Imperial College Progress Report II, Agreement no. SMCFU/654, November 1996.
Berbinau, P., Soutis, C., Goutas, P., and Curtis, P., 'Effect of off-axis ply orientation on 0°-fibre microbuckling', Composites A 30, 1999, 1197.
Newman, J. C., Jr., 'A Nonlinear Fracture Mechanics Approach to the Growth of Small Cracks', in AGARD Specialists Meeting on Behaviour of Short Cracks in Airframe Components, Toronto, Canada, 1982, pp. 1–26.
Lord, S. J., Failure of Composites under Direct and Shear Biaxial Loading, Technical Report, DERA/MSS/MSTR2/CR990326/1.0, September 1999.
Soutis, C. and Curtis, P. T., 'A Method for Predicting the Fracture Toughness of CFRP Laminates Failing by Fibre Microbuckling', Composites A 31(7), 2000, 733–740.
Sutcliffe, M. P. F., Fleck, N. A. and Xin, X. J., 'Prediction of Compressive Toughness for Fibre Composites', Proc. Roy. Soc. Lond. Ser. A 452, 1996, 2443–2465.
Soutis, C., Filiou, C. and Pateau, V., 'Strength Prediction of Fibre Reinforced Plastics with a Hole under Compression-Tension', AIAA Journal 38(1), 2000, 110–114.
Berbinau, P. and Soutis, C., 'A New Approach for Solving Mixed Boundary Value Problems along Holes in Orthotropic Plates', to appear in the Internat. J. Solids Structures, 2000.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Berbinau, P., Filiou, C. & Soutis, C. Stress and Failure Analysis of Composite Laminates with an Inclusion under Multiaxial Compression-Tension Loading. Applied Composite Materials 8, 307–326 (2001). https://doi.org/10.1023/A:1011279721719
Issue Date:
DOI: https://doi.org/10.1023/A:1011279721719