NASA NTRS · 19860049887
Crack growth in unidirectional graphite-epoxy under biaxial loading
Abstract
An anisotropic elasticity crack tip stress analysis is implemented using three crack extension direction criteria (the normal stress ratio, the tensor polynominal and the strain energy density) to predict the direction of crack extension in unidirectional of axis graphite-epoxy. The theoretical predictions of crack extension direction are then compared with experimental results for 15 deg off axis tensile coupons with center cracks. Specimens of various aspect ratios and crack orientations are analyzed. It is shown that only the normal stress ratio criterion predicts the correct direction of crack growth.
Keep this discovery
Explore connections, maps & timelines
Beuth, J. L., Jr., Gregory, M. A., Herakovich, C. T.. 1985-01-01. Crack growth in unidirectional graphite-epoxy under biaxial loading. https://ntrs.nasa.gov/citations/19860049887
Cite the original work for its findings. Save a collection to share your selection of sources.