Fatigue Residual Properties of Ti/APC-2 Nanocomposite Laminates after Low-Velocity Impact

Abstract:

The post mechanical behavior of Ti/APC-2 hybrid nanocomposite laminates after low velocity impact was investigated. The three layered Ti/APC-2/Ti cross-ply nanocomposite laminates were fabricated according to the modified the diaphragm curing process. Each sample, L×W×t=240mm×25mm×1.55mm, was first subjected to free drop of a rigid steel sphere (diameter=12.7mm) of 1m and 2m high. Then, the samples were due to static tensile tests at room temperature to measure their residual ultimate strength and longitudinal stiffness as the base-line data for constant stress amplitude tension-tension cyclic tests. The corresponding S-N curve, fatigue strength and life were obtained. Also, the failuremechanisms were observed.The mechanical properties do not reduce significantly due to low-velocity impact. Similarly, the fatigue resistance of impacted samples does not lose much. The enhancement by nanoparticles and superior bonding capability of matrix PEEK with Ti sheets take the responsibility of improvement of mechanical responses.

• Periodical: Applied Mechanics and Materials (Volumes 268-270)
• Pages: 100-103
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.268-270.100
• Online since: December 2012
• Authors: Ming Hwa R. Jen, Che Kai Chang, Jing Guan Chen, Bo Cyuan Lin
• Keywords: Composite, Fatigue, Gr/PEEK(APC-2), Impact, Nano, Tension, Ti Alloys

References

[1] G. Dorey, S. M. Bishop, and P. T. Custis: Composites Science and Technology Vol. 23 (1985), p.221.

[2] S. P. Joshi and C. T. Sun: Journal of Composite Materials Vol. 19 (1985), p.56.

[3] E. Dan-Jumbo, A. R. Leewood, and C. T. Sun: ASTM STP 1012 (1989), p.356.

[4] C. T. Sun, and S. Rechak: ASTM STP 972 (1988), p.97.

[5] K. Ramani, W. J. Weidner and G. Kumari: Int. J. Adhesion and Adhesives 18 (1998), p.401.

[6] B. M. Ditchek, K. R. Breen, T. S. Sun and J. D. Venables: In: Proc. 25th Nat. SAMPE Symp. (1980), p.13.

[7] C. L. Wu, M. Q. Zhang, M. Z. Rong, and K. Friedrich: Composites Science and Technology Vol. 65 (2005), p.635.

[8] M. H. R. Jen, Y. C. Sung, C. K. Chang, and F. C. Hsu, in: Fifth Int. Conference on Fatigue of Composites, Oct. Nanjing, China(2010), p.317.