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탄소나노튜브 복합소재 전왜 특성과 3D 프린팅을 활용한 로드셀 개발 연구
강인필(Inpil Kang),정관영(Kwan Young Joung),최백규(Beak Gyu Choi),김성용(Sung Yong Kim),오광원(Gwang Won Oh),김병탁(Byung Tak Kim),백운경(Woon Kyung Baek) 유공압건설기계학회 2020 드라이브·컨트롤 Vol.17 No.4
This paper presents the basic research for the design and fabrication of a 3D-printed load cell made of NCPC (nano-carbon piezo-resistive composite). We designed a structure that can resonate at a low frequency range of about 5–6 Hz with ANSYS using sensitivity analysis and a response surface method. The design was verified by fabricating the device with a low-quality commercial 3D printer and ABS filament. We conducted a feasibility test for a commercial sensor using 1000 cyclic load tests at 0.3 Hz in a material testing system. A manufacturing process for the 3D printer filament based on the NCPC was also developed using the nano-composite process.
3D 프린팅 센서 연구 동향 소개-전왜성 변형/로드셀 센서 중심으로
조정훈 ( Jeong Hun Cho ),문현우 ( Raymond Hyun Woo Moon ),김성용 ( Sung Yong Kim ),최백규 ( Baek Gyu Choi ),오광원 ( Gwang Won Oh ),정관영 ( Kwan Young Joung ),강인필 ( In Pil Kang ) 한국센서학회 2021 센서학회지 Vol.30 No.6
The conventional microelectromechanical system (MEMS) process has been used to fabricate sensors with high costs and high-volume productions. Emerging 3D printing can utilize various materials and quickly fabricate a product using low-cost equipment rather than traditional manufacturing processes. 3D printing also can produce the sensor using various materials and design its sensing structure with freely optimized shapes. Hence, 3D printing is expected to be a new technology that can produce sensors on-site and respond to on-demand demand by combining it with open platform technology. Therefore, this paper reviews three standard 3D printing technologies, such as Fused Deposition Modeling (FDM), Direct Ink Writing (DIW), and Digital Light Processing (DLP), which can apply to the sensor fabrication process. The review focuses on strain/load sensors having both sensing material features and structural features as well. NCPC (Nano Carbon Piezoresistive Composite) is also introduced as a promising 3D material due to its favorable sensing characteristics.