선택한 단어 수는 입니다.
최소 단어 이상 선택하여야 합니다.
최소 단어 이상 선택하여야 합니다.
선택한 단어 수는 30입니다.
최대 10 단어까지만 선택 가능합니다.
최대 10 단어까지만 선택 가능합니다.
제안 방법
- These existing materials should withstand various production processes that are difficult in terms of flexible device implementation and have the disadvantage that the device shape cannot be freely implemented. Hence, the study aims to produce a flexible resistance sensor (FRS) along with numerous other flexible devices using the fused deposition modeling (FDM) three-dimensional (3D) printing technique which affords a simple production process. The characteristics of the obtained sensor will also be evaluated.
- Agilent) with 10 iterations of 15, 20, and 25% increase and returning-back in displacement. In addition, the change in electrical characteristics was measured using the same method after annealing the 3D printing sensor in a constant temperature oven in order to provide a comparative analysis of the characteristics before and after annealing.
- In the present study, the 3D printed FRS was produced using thermoplastic polyurethane (TPU) to provide flexibility along with the conductive poly lactic acid (PLA). In order to optimize the process and enhance the electrical conductance of the 3D printed sensor, studies were also performed on the changes in electric resistance with increasing and decreasing displacement of the sensor before and after heat treatment (annealing). This study is expected to contribute to the expansion of FDM 3D printing into the electric and electronic application fields such as wearable and flexible devices.
- To determine the annealing temperature for the FRS, the glass transition temperature (Tg) and crystallization temperature of the conductive PLA filament were measured using a differential scanning calorimeter (DSC 200F3, NETZSCH). The results of these measurements are presented in Fig.
- To measure the change in electric resistance according to the displacement of the flexible resistance sensor, the sensor was fixed to the single-axis actuator and 15, 20, and 25% tension was applied, held steady for one second, then allowed to return to the relaxed condition. This procedure was conducted 10 times and the change in electric resistance was measured via the power line communication (PLC) control.
- To measure the electrical conductance according to the changing displacement of the 3D printing FRS, both ends of the sensor were fixed using a single axis actuator and the change in electric resistance was measured in real-time using a digital multimeter (34410a. Agilent) with 10 iterations of 15, 20, and 25% increase and returning-back in displacement. In addition, the change in electrical characteristics was measured using the same method after annealing the 3D printing sensor in a constant temperature oven in order to provide a comparative analysis of the characteristics before and after annealing.
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