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Title: Prior Thermal Spikes and Thermal Shocks on Mechanical Behavior of Glass Fiber-epoxy Composites
Authors: Ray, B C
Mula, S
Bera, T
Ray, P K
Keywords: polymer-matrix composites
Environmental Degradation
hygrothermal behavior
Mechanical properties
Issue Date: 2006
Publisher: Sage
Citation: Journal of Reinforced Plastics and Composites, Vol 25, Iss 2, P 197-213
Abstract: Fiber reinforced glass-epoxy composites with and without prior thermal history were subjected to hygrothermal conditioning for different exposure times. The prior thermal history was given in form of thermal shocks and thermal spikes at three different temperatures. The effects of exposure time and prior thermal history on the moisture absorption kinetics were studied. The effects of prior conditioning parameters were also investigated. The variation of mechanical properties as a function of exposure time and prior conditioning parameters were assessed by the three-point short beam shear bend test. It has been observed that there is an initial improvement in the mechanical properties followed by a steady deterioration. Mechanical tests performed at different crosshead velocities showed increasing brittleness of the composites and that was found to be a function of crosshead velocity.
Description: Copyright for this article belongs to Sage publications DOI:10.1177/073168440?056446
Appears in Collections:Journal Articles

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