Delamination propagation in a multi-directional woven composite DCB specimen subjected to fatigue loading

作者：Ishbir Chaim; Banks Sills Leslie^*; Fourman Victor; Eliasi Rami

来源：Composites Part B: Engineering , 2014, 66: 180-189.

DOI：10.1016/j.compositesb.2014.05.013

• carbon fiber
• Fabrics/textiles
• Delamination
• Fatigue

Double cantilever beam (DCB) specimens fabricated from a graphite/epoxy (G0814/913) woven prepreg containing a straight through notch were tested by means of constant amplitude fatigue. The specimen was composed of 15 layers with fibers alternating between the weft and warp in the 0 degrees/90 degrees and the +45 degrees/-45 degrees directions. Eight fatigue tests were carried out to determine the delamination growth rate da/dN vs the nearly mode I cyclic energy release rate Delta G(I). Comparison of the delamination growth rate was made to the crack propagation rate of an aluminum alloy. It was found that a crack in the aluminum will grow faster but will be less sensitive to uncertainties or changes in load level.

• 出版日期2014-11