Sage Journals: Discover world-class research

Abstract

Little information regarding the effect of weight fraction of constituent phases of freeze–thaw response in polymer composites at different loading rates and temperatures has been published to date. The present experimental study uses a 3-point flexural test to qualitatively assess such effects for 55, 60, and 65 weight percentages of E-glass fiber-reinforced epoxy composites during cryogenic and after thawing conditions. The specimens were tested at a range of 0.5–500 mm/min crosshead speed to evaluate the sensitivity of mechanical response during loading at ambient and sub-ambient temperatures (80°C temperature). These shear strength values are compared with the testing data of as-cured samples. The findings are explainable at a lower range of crosshead speed. The data obtained at higher loading rate suggest further investigation to establish the nature.

Keywords

epoxy composites weight fraction cryogenic temperature loading rate shear strength

Get full access to this article

View all access options for this article.

References

Timmerman, J. F. , Hayes, B. S. and Seferis, J. C. (2003). Cryogenic Microcracking of Carbon Fiber/Epoxy Composites: Influences of Fiber-Matrix Adhesion , J. Compos. Mater., 37(21): 1939-1939 .

Jacob, G. C. , Starbuck, J. M. , Fellers, J. F. , Simunovic, S. and Boeman, R. G. (2004). Strain Rate Effects on the Mechanical Properties of Polymer Composite Materials, J . Appl. Polym. Sci., 94(1): 296–301 .

Liu, C. T. and Smith, C. W. (1996). Temperature and Rate Effects on Stable Crack Growth in a Particulate Composite Material , Experimental Mech., 36(3): 290-290 .

Jang, B. Z. (1994). Advanced Polymer Composites: Principles and Applications, p. 196-196, ASM International, Materials Oark, OH .

Karabhari, V. M. , Rivera, J. and Dutta, P. K. (2000). Effect of Short-term Freeze-thaw Cycling on Composite Confined Concrete , J. Compos. Construct., 4(4): 191-191 .

Ray, B. C. (2004). Effect of Crosshead Velocity and Sub-zero Temperature on Mechanical Behavior of Hygrothermally Conditioned Glass Fiber Reinforced Epoxy Composites , Mater. Sci. & Engg., A397(1–2): 39-39 .

Salin, I. and Seferis, J. C. (1996). Anisotropic Degradation of Polymeric Composites: from Neat Resin to Composite , Polymer Compos., 13(3): 430-430 .

Ray, B. C. (2004). Thermal Shock on Interfacial Adhesion of Thermally Conditioned Glass/Epoxy Composites , Mater. Lett., 58(16): 2175-2175 .

Ray, B. C. (2003). Study of the Influence of Thermal Shock on Interfacial Damage in Thermosetting Matrix Aramid Fibre Composites , J. Mater. Sci. Lett., 22(3): 201-201 .

10.

Ray, B. C. (2005). Thermal Shock and Thermal Fatigue on Delamination of Glass Fiber Reinforced Polymer Composites , J. Reinf. Plast. & Compos., 24(1).

11.

Kim, R. Y. , Rice, B. P. and Donaldson, S. L. (2002). Proc. 47th Int. SAMPE Symposium and Exhibition, SAMPE, Long Beach, CA, pp. 833–842 .

12.

Bowden, P. B. and Young, R. J. (1974). Deformation Mechanisms in Crystalline Polymers , J. Mater. Sci., 9(12): 2034-2034 .

13.

Sawa, F. , Nishijima, S. and Okada, T. (1995). Molecular Design of an Epoxy for Cryogenic Temperatures , Cryogenics, 35(11): 767-767 .

Loading Rate Sensitivity of Glass Fiber–Epoxy Composite at Ambient and Sub-ambient Temperatures

Abstract

Keywords

Get full access to this article

References