In-plane shear properties of basalt-carbon/epoxy hybrid composite laminates

摘要

In this work, the in-plane shear properties of basalt-carbon/epoxy hybrid composite laminates is investigated. The composite laminates were fabricated using the hand layup method. Six symmetrical lamination stacking sequences ([0(2)C/+/- 45B/0B](S,) [0(2)C/0B/+/- 45B](S,) [0(2)C/+/- 45(2)B](S,) [0B/+/- 45B/0(2)C](S,) [+/- 45B/0B/0(2)C](S,) [+/- 45(2)B/0(2)C](S)) with eight layers of unidirectional 0 degrees and biaxial +/- 45 degrees were selected for the current study. One eight-layered unidirectional 0(o) fiber layup of pure carbon fiber and one eight-layered unidirectional 0(o) fiber layup of pure basalt fiber were used as a reference. The in-plane shear strength of the composite laminates were determined experimentally according to the ASTM D7078 standard. The hybridization of basalt fiber and carbon fiber showed significant improvement in the in-plane shear strength and modulus of rigidity. The failure of the composite laminates was examined using the ASTM D7078 standard failure codes. Hybrid composite laminates C2 and B2, i.e. for [0(2)C/+/- 45B/0B](S) and [0B/+/- 45B/0(2)C](S), respectively had the highest in-plane shear strength while pure carbon C1 and pure basalt B1 with [0(8)C] and [0(8)B], respectively had the lowest shear strength.