An Investigation on the Use of a Laser Ablation Treatment on Metallic Surfaces and the Influence of Temperature on Fracture Toughness of Hybrid Co-Cured Metal-PMC InterfacesHybrid composite laminates that contain alternating layers of titanium alloys and carbon fabric reinforced polyimide matrix composites (PMC) are excellent candidates for light-weight, high-temperature structural materials for high-speed aerospace vehicles. The delamination resistance of the hybrid titanium-PMC interface is of crucial consideration for structural integrity during service. Here, we report the first investigations on the use of laser ablation in combination with sol-gel treatment technique on Ti/NiTi foil surfaces in co-cured hybrid polyimide matrix composite laminates. Mode-I and mode-II fracture toughness of the hybrid Ti/NiTi-PMC interface as a function of temperature were determined via experimental testing and finite element analysis.
Document ID
20160007707
Acquisition Source
Langley Research Center
Document Type
Presentation
Authors
Connell, John (NASA Langley Research Center Hampton, VA, United States)
Palmieri, Frank (NASA Langley Research Center Hampton, VA, United States)
Truong, Hieu (Texas A&M System Univ. College Station, TX, United States)
Ochoa, Ozden (Texas A&M System Univ. College Station, TX, United States)
Lagoudas, Dimitris (Texas A&M System Univ. College Station, TX, United States)