Experimental Study on the Stitching Reinforcement of Composite Member with a Circular Hole

Abstract:

Experiment studies are carried out on the stitching reinforcement of composite laminates containing a circular hole. The tensile strength and stiffness are measured, and their dependence on stitching parameters such as stitching needle distance, row spacing, edge distance and stitching type (i.e. single stitching or double stitching) are analyzed. The strain distribution is investigated experimentally for different stitching parameters, external load and edge location of the hole. It is shown that the results of stitching reinforcement are quite different for composite laminates with a circular hole, which could provide proper stitching parameters for designers. The analysis for different failure samples are made. Reinforced by stitching, the failure section is mainly perpendicular to loading direction. It can be seen that the capacity of load bearing rises when the composite components are reinforced by stitching the hole.

• Periodical: Advanced Materials Research (Volumes 152-153)
• Pages: 459-464
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.152-153.459
• Online since: October 2010
• Authors: Xi Ping Zhu, Zhang Xin Guo, Xiao Ang Cao, Xi Zhe Zhi
• Keywords: Composite Laminates with a Hole, Failure Section, Stitching Parameter, Stitching Reinforcement, Strain Distribution

References

[1] Rybicki E F, Schmueser D W. J. of Composite Materials, 1978, 12: 300-313.

[2] Tan S C. J. of Composite Materials, 1991, 25: 556-577.

[3] Romeo G. J. of Composite Materials, 2001, 35(8): 639-663.

[4] Maa RH, Cheng JH. Composites: Part B, 2002, 33: 479-489.

[5] Arola D, McCain M L. J. of Composite Materials, 2003, 37(16): 1439-1460.

[6] Jain L K, Mai Y-W. Int J Fract 1994; 68: 219-244.

[7] Jain L K, Mai Y-W. Comp Sci Tech 1994; 51: 331-345.

[8] Jain L K, Mai Y-W. Comp Sci Tech 1995; 55: 241-253.

[9] Dransfield K A, Jain L K, Mai Y-W. Comp Sci Tech 1998; 58: 815-827.

[10] Jain L K, Dransfield K A, Mai Y-W. Comp Sci Tech 1998; 58: 829-837.

[11] Mouritz A P, Cox B N. Composites A 2000; 31: 1-27.

[12] Jones R M. Mechanics of Composites [M]. Shanghai: Shanghai Science and Technology Press, 1981. (in Chinese).