Michael R Wisnom

TL;DR: In this article, the initial fracture propagation within a full-scale stiffened quasi-isotropic composite panel and coupons with stringer feet under tensile loads was investigated, and the failure loads of all configurations were successfully related using the same value of trans-laminar fracture energy.

TL;DR: In this article, a co-curing ply-overlap joint technique for integrating dissimilar composite materials is presented to identify the dominant failure mechanisms and the effect of design parameters, such as the spatial distances between ply terminations and overlap length, on the strength of hybrid composite plyoverlap joints.

TL;DR: In this article, the effect of fiber properties of composite structures on the mechanical performance and formation of low-velocity impact damage was investigated, and the results demonstrated that the shape of the load-displacement of the S-glass/epoxy laminates is similar to that of the IM7-carbon lamination, with evident changes in rigidity appearing due to the onset and propagation of delamination.

TL;DR: In this paper, an analytical method for the calculation of the energy release rates associated with interlaminar cracks emanating from the ply termination in both the laminate thick and thin sections, also accounting for the effects of the tapering angle is presented.