12 June 2000 Development of damage suppression system using embedded SMA foil sensor and actuator
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The recent studies suggest possible applications of shape memory alloy (SMA) for a smart health monitoring and suppression of damage growth. The authors have been conducting research and development studies on applications of embedded SMA foil sensors and actuators in CFRP laminates. The goal of this research is suppression of damage growth in CFRP laminates. At first, the authors proposed a concept of damage suppression in CFRP laminates. Then, the development studies are conducted in three phases. The first phase is the improvement of interlaminar shear strength between SMA and CFRP laminates. Some surface treatments were investigated for the improvement of bonding property by peel resistance test and single lap shear strength test. The second phase is the investigation of fabrication technique for producing a CFRP panel with embedded SMA foils. Fixture jigs were devised to introduce tensile loads during the fabrication process. The third phase is the strength demonstration of CFRP laminates with embedded SMA foils. Some strength test were conducted to obtain the design data for aircraft structures. It is confirmed that the shrinking force of pre-strained SMA influences to the strength and the crack density of CFRP panel.
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Toshimichi Ogisu, Toshimichi Ogisu, Masato Nomura, Masato Nomura, Norio Ando, Norio Ando, Junji Takaki, Junji Takaki, Dong Yeul Song, Dong Yeul Song, Nobuo Takeda, Nobuo Takeda, } "Development of damage suppression system using embedded SMA foil sensor and actuator", Proc. SPIE 3991, Smart Structures and Materials 2000: Industrial and Commercial Applications of Smart Structures Technologies, (12 June 2000); doi: 10.1117/12.388147; https://doi.org/10.1117/12.388147

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