Effects of specimen width on the tensile strength of aligned short-carbon-fiber reinforced epoxy composite laminates

Hang Li, Wen Xue Wang, Terutake Matsubara, Jia Xue, Dongmei Luo

Research output: Contribution to conferencePaper

Abstract

This study investigates the size effects of specimen width on the tensile testing properties of aligned short carbon fiber reinforced epoxy composite laminate. This is a kind of newly designed short fiber composite laminates and called unidirectionally arrayed chopped strands (UACS) laminates, fabricated by introducing discontinuous slits into the conventional continuous fiber prepreg. Tensile tests for specimens with different width cut from UACS laminates are conducted. Results of tests reveal that tensile strength increases with the increase of specimen width until the specimen width is equal to 25 mm. Failure modes are different for specimens with different width. Fiber breakage of 0° plies are observed only for specimens with width larger than 20 mm. The stress concentration at the free edge plays a main role for the effect of the specimen width on the tensile properties. Large delamination occurs near the free edge and around the cross points of the slits in the 0° and adjacent ±45° plies.

Original languageEnglish
Publication statusPublished - Jan 1 2015
Event20th International Conference on Composite Materials, ICCM 2015 - Copenhagen, Denmark
Duration: Jul 19 2015Jul 24 2015

Conference

Conference20th International Conference on Composite Materials, ICCM 2015
CountryDenmark
CityCopenhagen
Period7/19/157/24/15

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Ceramics and Composites

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    Li, H., Wang, W. X., Matsubara, T., Xue, J., & Luo, D. (2015). Effects of specimen width on the tensile strength of aligned short-carbon-fiber reinforced epoxy composite laminates. Paper presented at 20th International Conference on Composite Materials, ICCM 2015, Copenhagen, Denmark.