An investigation was undertaken to study the damage initiation behavior in polymer matrix laminated composite plates subjected to a transverse central low velocity point impact load. Inplane failure of the layers in the form of matrix cracking/lamina splitting and delaminations were the primary objectives of the study. The study has been carried out using modified Hertz contact law and an inhouse three-dimensional transient finite element analysis (FEA) code. The inplane failure functions and the interlaminar failure functions have been predicted using quadratic failure criteria. The inhouse FEA code was validated with other analytical studies and the experimental results in our earlier work. The present studies have been carried out on different plain weave fabric laminated composite plates, simply supported on all four sides. For comparison, impact behavior of balanced symmetric crossply (CP) laminates made of unidirectional (UD) layers and UD composites has been included. The studies have been carried out with plate dimensions of 150 mm x 150 mm with different plate thicknesses. Incident impact velocity in the range of 1 m/sec to 3 m/sec and impactor mass of 50 gm are considered. General observations on the distribution of failure functions and the initiation of damage are presented.
4. Jang, B. Z.1994. "Design for Improved Impact Resistance of Polymer Composites,"in Advanced Polymer Composites. Materials Park, Ohio: ASM International, pp. 167-198.
5.
5. Richardson, M. O. W. and M. J. Wisheart. 1996. "Review of Low Velocity Impact Properties of Composite Materials,"Composites Part A, 27A: 1123-1131.
6.
6. Dobyns, A. L.1981. "Analysis of Simply-Supported Orthotropic Plates Subjected to Static and Dynamic Loads,"AIAA Journal, 19:642-650.
7.
7. Takeda, N., R. L. Sierakowski and L. E. Malvern. 1981. "Transverse Cracks in Glass/Epoxy Crossply Laminates Impacted by Projectiles,"Journal of Materials Science Letters, 16:2008-2011.
8.
8. Joshi, S. P. and C. T. Sun. 1985. "Impact Induced Fracture in a Laminated Composite,"Journal of Composite Materials, 19:51-66.
9.
9. Joshi, S. P. and C. T. Sun. 1987. "Impact Induced Fracture in a Quasiisotropic Laminate,"Journal of Composites Technology and Research, 9:40-46.
10.
10. Reed, P. E. and S. Turner. 1988. "Flexed Plate Impact, Part 7. Low Energy and Excess Energy Impacts on Carbon Fibre-Reinforced Polymer Composites,"Composites, 19:193-203.
11.
11. Sjoblom, P. O., J. T. Hartness and T. M. Cordell. 1988. "On Low Velocity Impact Testing of Composite Materials,"Journal of Composite Materials, 22:30-52.
12.
12. Wu, H. T. and G. S. Springer. 1988. "Measurements of Matrix Cracking and Delamination Caused by Impact on Composite Plates,"Journal of Composite Materials, 22:518-532.
13.
13. Liu, D.1988. "Impact Induced Delamination-A View of Bending Stiffness Mismatching,"Journal of Composite Materials, 22:674-692.
14.
14. Wu, H. T. and G. S. Springer. 1988. "Impact Induced Stresses, Strains, and Delaminations in Composite Plates,"Journal of Composite Materials, 22:533-560.
15.
15. Sun, C. T. and M. G. Manoharan. 1989. "Growth of Delamination Cracks Due to Bending in a [905/05/905] Laminate,"Composites Science and Technology, 34:365-377.
16.
16. Cantwell, W. J. and J. Morton. 1989. "Comparison of the Low and High Velocity Impact Response of CFRP,"Composites, 20:545-551.
17.
17. Choi, H. Y., R. J. Downs and F. K. Chang. 1991. "A New Approach toward Understanding Damage Mechanisms and Mechanics of Laminated Composites Due to Low Velocity Impact: Part I—Experiments,"Journal of Composite Materials, 25:992-1011.
18.
18. Choi, H. Y., H. T. Wu and F. K. Chang. 1991. "A New Approach toward Understanding Damage Mechanisms and Mechanics of Laminated Composites Due to Low Velocity Impact: Part II-Analysis,"Journal of Composite Materials, 25:1012-1038.
19.
19. Strait, L. H., M. L. Karasek and M. F. Amateau. 1992. "Effects of Stacking Sequence on the Impact Resistance of Carbon Fiber Reinforced Thermoplastic Toughened Epoxy Laminates,"Journal of Composite Materials, 26:1725-1740.
20.
20. Olsson, R.1992. "Impact Response of Orthotropic Composite Plates Predicted from a One Parameter Differential Equation,"AIAA Journal, 30:1587-1596.
21.
21. Choi, H. Y., H. S. Wang and F. K. Chang. 1992. "Effect of Laminate Configuration and Impactor's Mass on the Initial Impact Damage of Graphite/Epoxy Composite Plates Due to Line-Loading Impact,"Journal of Composite Materials, 26:804-827.
22.
22. Choi, H. Y. and F. K. Chang. 1992. "A Model for Predicting Damage in Graphite/Epoxy Laminated Composites Resulting from Low-Velocity Point Impact,"Journal of Composite Materials, 26:2134-2169.
23.
23. Razi, H. and A. S. Kobayashi. 1993. "Delamination in Crossply Laminated Composite Subjected to Low Velocity Impact,"AIAA Journal, 31:1498-1502.
24.
24. Jih, C. J. and C. T. Sun. 1993. "Prediction of Delamination in Composite Laminates Subjected to Low Velocity Impact,"Journal of Composite Materials, 27:684-701.
25.
25. Finn, S. R. and G. S. Springer. 1993. "Delamination in Composite Plates under Transverse Static or Impact Loads—A Model,"Composite Structures, 23:177-190.
26.
26. Davies, G. A. O., X. Zhang, G. Zhou and S. Watson. 1994. "Numerical Modelling of Impact Damage,"Composites, 25:342-350.
27.
27. Erarslanoglu, G., E. S. Ardic, A. Kayran, and C. Bolcan. 1994. "A Method of Failure Prediction in Laminated Composites Subjected to Low Velocity Impact," in PD-Vol. 64-2, Engineering Systems Design and Analysis, Veniali et al., eds., ASME, pp. 111-118.
28.
28. Wang, H. and T. Vu-Khanh. 1994. "Damage Extension in Carbon Fiber/PEEK Crossply Laminates under Low Velocity Impact,"Journal of Composite Materials, 28:684-707.
29.
29. Liu, S. and F. K. Chang. 1994. "Matrix Cracking Effect on Delamination Growth in Composite Laminates Induced by a Spherical Indenter,"Journal of Composite Materials, 28:940-977.
30.
30. Lammerant, L. and I. Verpoest. 1994. "The Interaction between Matrix Cracks and Delaminations during Quasi-Static Impact of Composites,"Composites Science and Technology, 51:505-516.
31.
31. Prasad, C. B., R. A. Damodar and H. S. James, Jr.1994. "Response of Laminated Composite Plates to Low Speed Impact by Different Impactors,"AIAA Journal, 32:1270-1277.
32.
32. Wang, H. and T. Vu-Khanh. 1995. "Fracture Mechanics and Mechanisms of Impact Induced Delamination in Laminated Composites,"Journal of Composite Materials, 29:156-178.
33.
33. Abrate, S.1995. "Design for Impact Resistance," in Computer-Aided Design of Polymer Matrix Composite Structures, S. V. Hoa, ed., New York: Marcel Dekker, Inc., pp. 209-242.
34.
34. Liou, W. J., C. I. Tseng and L. P. Chao. 1996. "Stress Analysis of Laminated E-Glass/Epoxy Composite Plates Subject to Impact Dynamic Loading,"Computers & Structures, 61: 1-11.
35.
35. Lammerant, L. and I. Verpoest. 1996. "Modelling of the Interaction between Matrix Cracks and Delaminations during Impact of Composite Plates,"Composites Science and Technology, 56:1171-1178.
36.
36. Pierson, M. O. and R. Vaziri. 1996. "Analytical Solution for Low Velocity Impact Response of Composite Plates,"AIAA Journal, 34:1633-1640.
37.
37. Delfosse, D. and A. Poursartip. 1997. "Energy Based Approach to Impact Damage in CFRP Laminates,"Composites Part A, 28A:647-655.
38.
38. Morita, H., T. Adachi, Y. Tateishi and H. Matsumoto. 1997. "Characterization of Impact Damage Resistance of CF/PEEK and CF/Toughened Epoxy Laminates under Low and High Velocity Impact Tests,"Journal of Reinforced Plastics and Composites, 16:131-143.
39.
39. Pechulis, M. and D. Vautour. 1998. "The Effect of Thickness on the Tensile and Impact Properties of Reinforced Thermoplastics,"Journal of Reinforced Plastics and Composites, 17:1580-1586.
40.
40. Geubelle, P. H. and J. S. Baylor. 1998. "Impact-induced Delamination of Composites: A 2D Simulation,"Composites Part B, 29B:589-602.
41.
41. Chotard, T. J. and M. L. Benzeggagh. 1998. "On the Mechanical Behaviour of Pultruded Sections Submitted to Low-Velocity Impact,"Composites Science and Technology, 58:839-854.
42.
42. Collombet, F., X. Lalbin, J. Bonini, V. Martin and J. L. Lataillade. 1998. "Damage Criteria for the Study of Impacted Composite Laminates,"Composites Science and Technology, 58:679-686.
43.
43. Fouss, E., P. V. Straznicky and C. Poon. 1998. "Effects of Stacking Sequence on the Impact Resistance in Composite Laminates—Part 1: Parametric Study,"Composite Structures, 41:67-77.
44.
44. Fouss, E., P. V. Straznicky and C. Poon. 1998. "Effects of Stacking Sequence on the Impact Resistance in Composite Laminates—Part 2: Prediction Method,"Composite Structures, 41:177-186.
45.
45. Collombet, F., X. Lalbin and J. L. Lataillade. 1998. "Impact Behavior of Laminated Composites: Physical Basis for Finite Element Analysis,"Composites Science and Technology, 58:463-478.
46.
46. Winkel, J. D. and D. F. Adams. 1985. "Instrumented Drop Weight Impact Testing of Crossply and Fabric Composites,"Composites, 16:268-278.
47.
47. Bishop, S. M.1989. "Strength and Failure of Woven Carbon-Fibre Reinforced Plastics for High Performance Applications," in Textile Structural Composites, T. W. Chou and F. K. Ko, eds., Amsterdam: Elsevier, pp. 173-207.
48.
48. Ramakrishnaiah, K. N. and N. K. Naik. 1993. "Impact Response of Polymer Matrix Woven Fabric Composites," in Emerging Trends in Mechanical Engineering, Proceedings of the 8th ISME Conference, R. S. Agarwal et al., eds., New Delhi: Tata McGraw-Hill Publishing Co., Ltd., pp. 319-324.
49.
49. Ramakrishnaiah, K. N., H. Arya and N. K. Naik. 1993. "Effect of Fabric Geometry on Damage Resistance of Woven Fabric Composites," in Developments in the Science and Technology of Composite Materials, ECCM 6, A. R. Bunsell et al., eds., Cambridge, U. K.: Woodhead Publishing Limited, pp. 251-256.
50.
50. Davies, G. A. O., D. Hitchings and G. Zhou. 1996. "Impact Damage and Residual Strengths of Woven Fabric Glass/Polyester Laminates,"Composites Part A, 27A: 1147-1156.
51.
51. Lifshitz, J. M. and M. Gandelsman. 1997. "Effect of Near-Surface Impact-Induced Damage on the Residual Strength of Woven Glass/Epoxy Composite Beams,"Composites Science and Technology, 57:205-216.
52.
52. Karaoglan, L. and A. K. Noor. 1997. "Frictional Contact/Impact Response of Textile Composite Structures,"Composite Structures, 37:269-280.
53.
53. Ebeling, T., A. Hiltner, E. Baer, I. M. Fraser and M. L. Orton. 1997. "Delamination Failure of a Woven Glass Fiber Composite,"Journal of Composite Materials, 31:1318-1333.
54.
54. Naik, N. K. and Y. Chandra sekher. 1998. "Damage in Laminated Composites due to Low Velocity Impact," Technical Report No. IITB/AE/ARDB/SP/TR/890/98/02, IIT Bombay.
55.
55. Naik, N. K. and Y. Chandra sekher. 1998. "Damage in Laminated Composites due to Low Velocity Impact,"Journal of Reinforced Plastics and Composites, 17:1232-1263.
56.
56. Hirai, Y., H. Hamada and J. K. Kim. 1998. "Impact Response of Woven Glass-Fabric Composites I. Effect of Fibre Surface Treatment,"Composites Science and Technology, 58:91-104.
57.
57. Hirai, Y., H. Hamada and J. K. Kim. 1998. "Impact Response of Woven Glass-Fabric Composites-II. Effect of Temperature,"Composites Science and Technology, 58:119-128.
58.
58. Wu, E. and L. C. Chang. 1998. "Loading Rate Effect on Woven Glass Laminated Plates by Penetration Force,"Journal of Composite Materials, 32:702-721.
59.
59. Siow, Y. P. and V. P. W. Shim. 1998. "An Experimental Study of Low Velocity Impact Damage in Woven Fiber Composites,"Journal of Composite Materials, 32:1178-1202.
60.
60. Bannister, M., I. Herszberg, A. Nicolaidis, F. Coman and K. H. Leong. 1998. "The Manufacture of Glass/Epoxy Composites with Multilayer Woven Architectures,"Composites Part A, 29A:293-300.
61.
61. Ying, Y.1998. "Analysis of Impact Threshold Energy for Carbon Fibre and Fabric Reinforced Composites,"Journal of Reinforced Plastics and Composites, 17:1056-1075.
62.
62. Naik, N. K., Y. Chandra sekher and S. Meduri. 1998. "Polymer Matrix Composites Subjected to Low Velocity Impact: Damage Initiation Studies," in Nonlinear Mechanics, Proceedings of the 8th NASAS, V. Kalyanaraman and P. Sriram, eds., New Delhi: Allied Publishing Ltd., pp. 308-315.
63.
63. Naik, N. K.1998. "Effect of Weave Parameters on Impact Behavior of Composites," in Proceedings of the 5th Japan-India Joint Seminar on Manufacturing Science of Advanced Composite Materials, T. Machida, ed., Tokyo: Tamagawa University, pp. 5-12.
64.
64. Naik, N. K.1994. Woven Fabric Composites, Lancaster, PA: Technomic Publishing Company Inc.
65.
65. Naik, N. K. and V. K. Ganesh. 1994. "Thermo-Elastic Analysis of Plain Weave Fabric Laminates," Technical Report No. IITB/AE/ARDB/SP/TR1659/94/04, l IT Bombay.
66.
66. Ganesh, V. K. and N. K. Naik. 1994. "Thermal Expansion Coefficients of Plain-Weave Fabric Laminates,"Composites Science and Technology, 51:387-408.
67.
67. Naik, N. K. and V. K. Ganesh. 1994. "Failure Behavior of Plain Weave Fabric Laminates under Inplane Shear Loading,"Journal of Composites Technology & Research, 16:3-20.
68.
68. Rajesh Kumar, S. and N. K. Naik. 1995. "Prediction of Compressive Strength of Plain Weave Fabric Composites," in Proceedings of ICCM-10, A. Poursartip and K. Street, eds., Cambridge, U. K.: Woodhead Publishing Limited, pp. IV333-IV340.
69.
69. Naik, N. K. and V. K. Ganesh. 1996. "Failure Behavior of Plain Weave Fabric Laminates under On-Axis Uniaxial Tensile Loading: II-Analytical Predictions,"Journal of Composite Materials, 30:1779-1822.
70.
70. Naik, N. K.1996. "Numerical Modelling of Woven Fabric Composite Materials," in Numerical Analysis and Modelling of Composite Materials, J. W. Bull, ed., London: Blackie Academic & Professional, Chapter 13, pp. 400-438.
71.
71. Naik, N. K.1997. "Mechanics of Woven Fabric Composites," in Composites Engineering Handbook, P. K. Mallick, ed., New York: Marcel Dekker, Inc., Chapter 6, pp. 249-307.
72.
72. Naik, N. K.1998. "Woven Fabric Composites: Process Parameters," in Proceedings of the 4th India-Japan Joint Seminar on Manufacturing Science of Advanced Composites, N. G. Nair, ed., Chennai: IIT Madras, pp. 43-50.
73.
73. Sankar, B. V. and C. T. Sun. 1985. "An Efficient Numerical Algorithm for Transverse Impact Problems,"Computers & Structures, 20:1009-1012.
74.
74. Wu, H. T. and F. K. Chang. 1989. "Transient Dynamic Analysis of Laminated Composite Plates Subjected to Transverse Impact,"Computers & Structures, 31:453-466.
76. Jones, R. M.1975. Mechanics of Composite Materials, Washington, D. C.: Scripta Book Company.
77.
77. Brewer, J. C. and P. A. Lagace. 1988. "Quadratic Stress Criterion for Initiation of Delamination,"Journal of Composite Materials, 22:1141-1155.
78.
78. Naik, N. K., S. Meduri and Y. Chandra sekher. 2000. "Polymer Matrix Woven Fabric Composites Subjected to Low Velocity Impact: Part II, Effect of Plate Thickness,"Journal of Reinforced Plastics and Composites, Vol. 19, No. 13.
