Investigating Strain Rate Effect on Transverse Compressive Strength of Fiber Composites

Abstract:

Article Preview

This research aims to investigate strain rate effect on transverse compressive strength of unidirectional fiber composites. Both glass/epoxy and graphite/epoxy composites were taken into account in this study. To demonstrate strain rate effect, composite brick specimens were fabricated and tested to failure in the transverse direction at strain rate ranges from 10-4/s to 500/s. For strain rate less than 1/s, the experiments were conducted by a hydraulic MTS machine. However, the higher strain rate tests were performed using a Split Hopkinson Pressure Bar (SHPB). Experimental observations reveal that the transverse compressive strengths increase corresponding to the increment of the strain rates. A semi-logarithmic function was employed to describe the rate sensitivity of the transverse compressive strength. SEM photographic on the failure surfaces depicts that for glass/epoxy composites, the failure mechanism is mainly due to the matrix shear failure, however, for the graphite/epoxy composites, it becomes the fiber and epoxy interfacial debonding which could dramatically reduce the transverse compressive strengths of the fiber composites.

Info:

Periodical:

Key Engineering Materials (Volumes 306-308)

Edited by:

Ichsan Setya Putra and Djoko Suharto

Pages:

733-738

Citation:

J. L. Tsai and J. C. Kuo, "Investigating Strain Rate Effect on Transverse Compressive Strength of Fiber Composites", Key Engineering Materials, Vols. 306-308, pp. 733-738, 2006

Online since:

March 2006

Export:

Price:

$38.00

[1] B.W. Rosen: Fiber Composites Materials (American Society for Metals, Metals Park, OH 1965), p.35.

[2] C.T. Sun and A.W. Jun: Composites Science and technology Vol. 52 (1994), p.577.

[3] C.T. Sun and J. Tsai: International Journal of Solids and Structures Vol. 41 (2004), p.3211.

[4] B. Budiansky: Computer and Structures Vol. 16 (1983), p.3.

[5] B. Budiansky and N.A. Fleck: Journal of the Mechanics and Physics of Solids Vol. 41 (1993), p.183.

[6] T.A. Collings: Composites Vol. 5 (1974), p.108.

[7] S.L. Bazhenov and V.V. Kozey: Journal of Materials Science Vol. 26 (1991), p.2677.

[8] A. Lowe: Journal of Materials Science Vol. 31 (1996), p.1005.

[9] H.M. Hsiao, I.M. Daniel and R.D. Cordes: Experimental Mechanics Vol. 38 (1998), p.172.

[10] H.M. Hsiao, I.M. Daniel and R.D. Cordes: Journal of Composite Materials Vol. 33 (1999), p.1620.

[11] M. Vural and G. Ravichandran: Journal of Composite Materials Vol. 38 (2004), p.609.

[12] K.F. Graff: Wave Motion in Elastic Solids (Dover Publications, New York 1975).