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The influence of surface ply fibre angle on the compressive strength of composite laminates containing delamination

  • A. T. Rhead, R. Butler, W. Liu (a1) and N. Baker (a1)


A combination of uniaxial compression tests and Strip Model and Finite Element analyses of laminates artificially delaminated to create circular (±θ) sublaminates is used to assess the influence of fibre angle on the compressive strength of composite laminates.

Sublaminates with 0° < θ < 40° are found to fail by sublaminate-buckling-driven delamination propagation and provide poor tolerance of delamination. This is a consequence of their relatively high axial stiffnesses, low sublaminate buckling strains, Poisson’s ratio induced compressive transverse strains and extension-twist coupling which produces unexpected sublaminate buckling mode shapes. Sublaminates with 40° < θ < 60° are most tolerant to delamination; axial and transverse stiffnesses are minimal, formation of sublaminate buckles is resisted, high laminate buckling strains reduce interaction between laminate and sublaminate buckling mode shapes and extension-twist coupling is minimal. Sublaminates with 60° < θ < 90° are shown to produce varied tolerance of delamination. Sublaminate buckling is generally prevented owing to transverse tensile strains induced by mismatches between laminate and sublaminate Poisson’s ratios but may occur in laminates with low Poisson’s ratios.


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1. Kim, B.C., Potter, K. and Weaver, P. Continuous tow shearing for manufacturing variable angle tow composites, Compos Part A: Appl Sci Manuf, 2012, (doi:10.1016/j.compositesa.2012.02.024).
2. Liu, W. and Butler, R. Buckling Optimization of Variable Angle Tow Panels Using Exact Strip Models, Proceedings of the 53rd AIAA, ASME, ASCE, AHS, and ASC Structures, Structural Dynamics, and Materials Conference, Waikiki, Hawaii, USA, April 2012.
3. Wu, Z., Weaver, P.M., Raju, G. and Kim, B.C. Buckling analysis and optimisation of variable angle tow composites, Thin wall structures, 2012, 60, pp 163172.
4. Raju, G., Wu, Z., Kim, B.C. and Weaver, P.M. Prebuckling and buckling analysis of variable angle tow plates with general boundary conditions, Composite Structures, 2012, 94, pp 29612970.
5. Butler, R., Rhead, A.T., Liu, W. and Kontis, N. Compressive strength of delaminated aerospace composites, Phil Trans Roy Soc A 2012, 370, pp 17591779.
6. Riccio, A., Scaramuzzino, F. and Perugini, P. Embedded delamination growth in composite panels under compressive load, Composites: Part B, 2001, 32, pp 209218.
7 Shen, F., Lee, K.H. and Tay, T.E. Modeling delamination growth in laminated composites, Comp Sci Tech, 2001, 61, pp 12391251.
8. Fu, H. and Zhang, Y. On the distribution of delamination in composite structures and compressive strength prediction for laminates with embedded delaminations, Appl Compos Mater, 2011, 18, pp 253269.
9. Tafreshi, A. and Oswald, T. Global buckling behaviour and local damage propagation in composite plates with embedded delaminations, Int J Pressure Vessels and Piping, 2003, 80, pp 920.
10. Wadee, M.A. and Völlmecke, C. Semi-analytical modelling of buckling driven delamination in uniaxially compressed damaged plates, IMA J Applied Mathematics, 2011, 76, pp 120145.
11. Craven, R., Iannucci, L. and Olsson, R. Delamination buckling: A finite element study with realistic delamination shapes, multiple delaminations and fibre fracture cracks, Composites: Part A, 2010, 41, pp 684692.
12. Suemasu, H., Irie, T. and Ishikawa, T. Buckling and post-buckling behavior of composite plates containing multiple delaminations, J Comp Mats, 2009, 43, (02), pp 191202.
13. Zhang, Y. and Wang, S. Buckling, post-buckling and delamination propagation in debonded composite laminates Part 1: Theoretical development, Composite Structures, 2009, 88, pp 121130.
14. Rhead, A.T. and Butler, R. Compressive static strength model for impact damaged laminates, Compos Sci Technol, 2009, 69, (14), pp 23012307.
15. Chai, H., Babcock, C.D. and Knauss, W.G. One dimensional modelling of failure in laminated plates by delamination buckling, Int J Structures, 1981, 17, (11), pp 10691083.
16. Hutchinson, J.W. and Suo, Z. Mixed mode cracking in layered materials, Adv Appl Mech, 1992, 29, pp 63191.
17. Williams, J.G. On the calculation of energy release rates for cracked laminates, Int J Frac, 1992, 36, pp 101119.
18. Rhead, A.T., Butler, R. and Hunt, G.W. Compressive Strength Following Delamination Induced Interaction of Panel and Sublaminate Buckling, Proceedings of the 53rd AIAA, ASME, ASCE, AHS, and ASC Structures, Structural Dynamics, and Materials Conference, Waikiki, Hawaii, USA, April 2012.
19. Williams, F.W., Kennedy, D., Butler, R. and Anderson, M.S. VICONOPT: program for exact vibration and buckling analysis or design of prismatic plate assemblies, AIAA J, 1991, 29, pp 19271928.
20. Shivakumar, K.N. and Whitcombe, J.D. Buckling of a sublaminate in a quasi-isotropic composite laminate, J Compos Maters, 1985, 19, (1), pp 218.
21. ABAQUS, Abaqus Analysis User’s Manual 2009, Version 6.9. Dassault Systèmes Simulia Corp, Providence, RI, USA 2009.
22. Benzeggagh, M.L. and Kenane, M. Measurement of mixed-mode delamination fracture toughness of unidirectional glass/epoxy composites with mixed-mode bending apparatus, Comp Sci and Tech, 1996, 56, pp 439449.
23. Rhead, A.T. and Butler, R. Buckling, propagation and stability of delaminated anisotropic layers Proceedings of ECCM 14, Budapest, Hungary, 2010.
24. Rhead, A.T., Butler, R. and Hunt, G.W. Post-buckled propagation model for compressive fatigue of impact damaged laminates, Int J Solids Struct, 2008, 45, (16), pp 4349–61.
25. Hunt, G.W., Hu, B., Butler, R., Almond, D.P. and Wright, J.E. Nonlinear modeling of delaminated struts, AIAA J, November 2004, 42, (11), pp 23642372.
26. Fenske, M.T. and Vizzini, A.J. The inclusion of in-plane stresses in delamination criteria, J Comp Mats, 2001, 35, (15), pp 13251342.
27. ESDU 80023, Buckling of rectangular specially orthotropic plates.

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The influence of surface ply fibre angle on the compressive strength of composite laminates containing delamination

  • A. T. Rhead, R. Butler, W. Liu (a1) and N. Baker (a1)


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