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Influence of Thin-Film Adhesives in Pullout Tests Between Nickel-Titanium Shape Memory Alloy and Carbon Fiber-Reinforced Polymer Matrix CompositesStrips of nickel-titanium (NiTi) shape memory alloy (SMA) and carbon fiber-reinforced polymer matrix composite (PMC) were bonded together using multiple thin film adhesives and their mechanical strengths were evaluated under pullout test configuration. Tensile and lap shear tests were conducted to confirm the deformation of SMAs at room temperature and to evaluate the adhesive strength between the NiTi strips and the PMC. Optical and scanning electron microscopy techniques were used to examine the interfacial bonding after failure. Simple equations on composite tensile elongation were used to fit the experimental data on tensile properties. ABAQUS models were generated to show the effects of enhanced bond strength and the distribution of stress in SMA and PMC. The results revealed that the addition of thin film adhesives increased the average adhesive strength between SMA and PMC while halting the room temperature shape memory effect within the pullout specimen.
Document ID
20180001850
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
Quade, Derek J. (NASA Glenn Research Center Cleveland, OH, United States)
Jana, Sadhan (Akron Univ. Akron, OH, United States)
McCorkle, Linda S. (Ohio Aerospace Inst. Brook Park, OH, United States)
Date Acquired
March 9, 2018
Publication Date
February 1, 2018
Subject Category
Composite Materials
Report/Patent Number
GRC-E-DAA-TN46662
NASA/TM-2018-219747
E-19464
Funding Number(s)
WBS: WBS 826611.04.03.01
CONTRACT_GRANT: NNC13BA10B
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Polymer Matrix Composites
Shape Memory Alloys

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