F. Ellyin et C. Rohrbacher, Effect of aqueous environment and temperature on glass-fibre epoxy resin composites, J REINF PL, 19(17), 2000, pp. 1405-1427
The main objective of this experimental investigation is to study the absor
ption behaviour of fibre-glass reinforced epoxy matrix composite laminates
immersed in distilled water, in ambient and 90 degreesC temperatures, and i
ts effect on the mechanical properties. A comparative study is carried out
to evaluate the properties of dry and water immersed specimens, and to inve
stigate damage caused by the aqueous environment and temperature. It is fou
nd that the degree of damage strongly depends on the immersion temperature.
The fracture surfaces in three different environments are studied using a
scanning electron microscope and micro-macro damage correlation is establis
hed. The threshold strain for the matrix crack initiation increases when th
e laminated are immersed in ambient water in comparison to that of a dry en
vironment. Immersion at high water temperature leads to embrittlement of th
e glass fibres and matrix blistering resulting in a slight decrease in thre
shold crack initiation strain.