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.
|Publication status||Published - Jan 1 2015|
|Event||20th International Conference on Composite Materials, ICCM 2015 - Copenhagen, Denmark|
Duration: Jul 19 2015 → Jul 24 2015
|Conference||20th International Conference on Composite Materials, ICCM 2015|
|Period||7/19/15 → 7/24/15|
All Science Journal Classification (ASJC) codes
- Ceramics and Composites