[부직포] Investigation into the Tensile Properties of Stitched and Unstitched Woven Aramid/Vinyl Ester Composites 출판일 : 2010.06.01 저자 : Mehmet Karahan, Nevin Karahan, Yusuf Ulcay, Recep Eren, Gökay Kaynak 서지사항 : Textile Research Journal, Volume 80, Issue 10, 880 페이지 등록일 : 2011.03.16 I 조회수 : 112 작성자 : admin |
In this study, the influence of stitch bonding on the tensile strength and tensile modulus in
plain woven Twaron T-750/vinyl ester composites in the direction of thickness was
examined. The effect of stitch density was investigated in longitudinal (warp) and
transverse (weft) directions as a parameter. The space (opening) geometry and the
deformation caused by the stitching process around stitch points were investigated. The
stitching tension, stitch thread type and diameter were kept constant throughout the study.
An increase in the tensile strength was observed for low stitching densities while there
was no change in the tensile strength for medium stitching densities. A decrease in the
tensile strength was observed for high stitching densities. It is especially noted that the
tensile strength, which is on the transversal direction perpendicular to stitch direction,
decreased with stitching density and tensile deformations initiated much earlier in this
direction. It was understood that fiber deviations and resin rich areas were much more
effective on these decreases compared with fiber deformation.
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