Abstract
This study investigates the repair of a glass/vinylester composite material with damage caused by impact loading and bending. The repair technique is based on the “standard procedures” established in a previous study. In addition to the damage due to bending, the repair of composite plates with straight cutting-line damage is also investigated due to its similarity to the bending fracture and good repeatability for evaluation. It is found that two glass reinforcing patches of plain weave—that is, (0, 90)2—on each side of the specimen can restore the original load-bearing capability of the composite material of concern. The investigation of the cutting-line damage can also be viewed as a study of bond-line angles for composite joining. It is concluded that a bond-line angle greater than 60° can restore the undamaged composite strength. In maintaining a large bond-line angle as well as a large bonding surface, various bond-line configurations are presented. Results from the five joints of V, W, WW, U, and UU shapes further verify this conclusion.
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