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Abstract

An analytical model was developed to determine the effective elastic constants of stitched laminae. The effects of stitch parameters on effective elastic constants were analyzed by considering the nonuniformity and in-plan fiber waviness induced by stitching. Based on the model, the constitutive relationship of stitched laminates was presented and the effects of stitch parameters on stiffness of stitched laminates were investigated. Tension and compression tests were conducted to validate the predictions. The experimental results were in good agreement with predictions based on the analytical model.

Keywords

laminate stitch stiffness fiber waviness

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References

Dransfield, K. , Baillie, C. and Mai, Y. W. (1994). Improving the Delamination Resistance of CFRP by Stitching - A Review , Composites Science and Technology, 50(2): 305-317 .

Kang, T. J. and Lee, S. H. (1994). Effect of Stitching on the Mechanical and Impact Properties of Woven Laminate Composite , J. of Composites Materials, 28(16): 1574-1587 .

Hawley, V. (1993). Development of Stitched/RTM Primary Structures of Transport Aircraft, NASA C95110-3.

Pelstring, R. M. and Madan, R. C. (1989). Stitching to Improve Damage Tolerance of Composites , In: Proc. 34th Int. SAMPE Symp., 8-11 May, pp. 1519-1528 .

Wu, E. and Wang, J. (1995). Behavior of Stitching Laminates under In-plane Tensile and Transverse Impact Loading , J. of Composite Materials, 29(17): 2254-2278 .

Mouritz, A. P. and Cox, B. N. (2000). A Mechanistic Approach to the Properties of Stitched Laminates , Composites Part A, 31(1): 1-27 .

Mouritz, A. P. , Leong, K. H. and Herszberg, I. (1997). A Review of the Effect of Stitching on the In-plane Mechanical Properties of Fibre-reinforced Polymer Composites , Composite Part A, 28A(12): 979-991 .

Tan, P. , Tong, L. and Steven, G. P. (1997). Modelling for Predicting the Mechanical Properties of Textile Composites - A Review , Composites Part A, 28A(11): 903-922 .

Chou, T. W. and Takahashi, K. (1987). Nonlinear Elastic Behaviour of Flexible Fibre Composites , Composites, 18(1): 25-34 .

10.

Kuo, C. M. , Takahashi, K. and Chou, T. W. (1988). Effect of Fiber Waviness on the Nonlinear Elastic Behaviour of Flexible Composites , J. of Composites Materials, 22(11): 1004-1025 .

11.

Hsiao, H. M. and Daniel, I. M. (1996). Effect of Fiber Waviness on Stiffness and Strength Reduction of Unidirectional Composites under Compressive Loading , Composites Science and Technology, 56(5): 581-593 .

12.

Gui, L. J. (2000). Study on Fundamental Mechanical Properties and Impact Resistance Capability of Stitched Laminates, Dissertation, Beijing University of Aeronautics and Astronautics.

Study on Stiffness of Stitched Laminates

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