The influence of the temperature on the ultimate tensile strength of the composite materials at constant Fiber volume fraction

Abstract

The aim of this work is to study the influence of the temperature on the ultimatetensile strength (UTS) of composite material which is manufactured from polyester andE-glass (woven roving, chopped strand mat) as a laminate with a constant fiber volumefraction (VF) of 33%. The results showed a little effect of temperature on tensilestrength in the range of room temperature (RT) to 50 oC for laminates reinforced withE-glass (woven roving) [0/90, ±45,0/90], [0/90]3, and [0/90, CSM, 0/90], but forlaminates reinforced with E-glass chopped strand mat (CSM), as [CSM] 3 and [CSM,0/90, CSM], a continuous reduction in strength was observed with increasingtemperature from (RT) to 60 oC. The highest percentage reduction in strength was 23%at 60oC as compared with (RT) for [CSM]3 laminate