In order to join a composite structure to a metallic structure, metal-wire mats were co-cured with composite laminas using the vacuum assisted resin transfer molding technique. Then, interface fracture toughness was measured for Mode II fracture for various lay-up and interface conditions. The study included interfaces of metal-wire to composite, composite to composite, and metal-wire to metal-wire. In addition, the lay-up orientations of metal-wire mats were varied between 0 deg and 90 deg. This study also examined the crack propagation from a composite to a metal/composite interface. During the test, the digital image correlation technique was applied to capture the strain field around the crack tip. The results suggested that a hybrid metal-wire/composite laminate would be effective to connect a composite structure to a metallic structure as long as some critical interface conditions were avoided.
Experimental Study of Mode II Fracture of Hybrid Composite and Metal-Wire Joints
Kwon, Y. W., Schultz, W. A., Loup, D. C., and Rasmussen, E. A. (February 9, 2011). "Experimental Study of Mode II Fracture of Hybrid Composite and Metal-Wire Joints." ASME. J. Pressure Vessel Technol. April 2011; 133(2): 021003. https://doi.org/10.1115/1.4002677
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