TY - GEN
T1 - New unidirectionally arrayed chopped strands composites by introducing discontinuous angled slits into prepreg
AU - Wang, Wen Xue
AU - Li, Hang
AU - Takao, Yoshihiro
AU - Matsubara, Terutake
PY - 2012/1/1
Y1 - 2012/1/1
N2 - In this paper, new designs of unidirectionally arrayed chopped strands (UACS) are proposed to improve the strength and material symmetry of existing UACS laminates by introducing discontinuous angled slits into prepreg of continuous carbon-fiber/epoxy. Two slit patterns, namely, staggered discontinuous angled slit pattern and discontinuous bi-angled slit pattern, are designed. Quasi-isotropic laminates of [45/0/-45/90]2S stacked by UACS prepregs with new slit patterns are fabricated by using an autoclave. Tensile tests of these laminates are conducted. Hybrid laminates [90/0/90] with two unidirectional glass-fiber/epoxy plies as 90-degree plies and one UACS ply as 0-degree ply are fabricated for flowabilty test by using hot pressing. Existing UACS laminates with continuous angled slits and conventional laminate without slit are also fabricated and tested for a comparison. Experimental results reveal that new designed UACS laminates have higher strength and better flowability than existing UACS laminate.
AB - In this paper, new designs of unidirectionally arrayed chopped strands (UACS) are proposed to improve the strength and material symmetry of existing UACS laminates by introducing discontinuous angled slits into prepreg of continuous carbon-fiber/epoxy. Two slit patterns, namely, staggered discontinuous angled slit pattern and discontinuous bi-angled slit pattern, are designed. Quasi-isotropic laminates of [45/0/-45/90]2S stacked by UACS prepregs with new slit patterns are fabricated by using an autoclave. Tensile tests of these laminates are conducted. Hybrid laminates [90/0/90] with two unidirectional glass-fiber/epoxy plies as 90-degree plies and one UACS ply as 0-degree ply are fabricated for flowabilty test by using hot pressing. Existing UACS laminates with continuous angled slits and conventional laminate without slit are also fabricated and tested for a comparison. Experimental results reveal that new designed UACS laminates have higher strength and better flowability than existing UACS laminate.
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M3 - Conference contribution
AN - SCOPUS:84903977384
SN - 9788888785332
T3 - ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials
BT - ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials
PB - European Conference on Composite Materials, ECCM
T2 - 15th European Conference on Composite Materials: Composites at Venice, ECCM 2012
Y2 - 24 June 2012 through 28 June 2012
ER -