Title of article :
The effect of weave pattern on the mode-I interlaminar fracture energy of E-glass/vinyl ester composites
Author/Authors :
Panuwat Suppakul، نويسنده , , Sri Bandyopadhyay، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Pages :
9
From page :
709
To page :
717
Abstract :
In this work, the effect of weave structure on the mode-I interlaminar fracture energy (GIc) of glass/toughened vinyl ester laminates has been investigated. The matrix material used was commercially available rubber-modified vinyl ester resin, DERAKANE 8084. The glass fibres used were E-glass plain weave, twill weave, quadran 4-harness satin weave, and 8-harness satin weave with weave index of 2, 3, 4 and 8 respectively. The specimens were prepared by a vacuum bagging technique. The mode-I delamination tests have been done at a constant displacement rate of 2 mm/min in an Instron testing machine, using specimens machined in accordance with ASTM D5528-94a. By using a HITACHI S-4500 scanning electron microscope, microscopic details of crack growth in the interply region were examined after fracture testing. The twill-weave laminate with weave index ng=3 yielded the highest value of fracture energy for critical crack propagation (GIc). Whilst the 8-harness satin-weave laminate gave the highest value of initial fracture energy (GIi). Partial debonding of transversely oriented yarns results in the delamination resistance for twill-weave, quadran 4-harness satin-weave, and 8-harness satin-weave laminates. Fracture of debonded fibres ascribed to as ‘fibre bridging’ was observed in the twill-weave, quadran 4-harness satin-weave and 8-harnes satin-weave laminates. No indications of fibre bridging were observed in the plain-weave laminate.
Keywords :
Fracture energy
Journal title :
COMPOSITES SCIENCE AND TECHNOLOGY
Serial Year :
2002
Journal title :
COMPOSITES SCIENCE AND TECHNOLOGY
Record number :
1039616
Link To Document :
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