액체 금속을 기반으로 하는 소프트 센서의 제조 방법에 따른 구조 내구 신뢰성 평가

Abstract

In this paper, three methods were used to fabricate a liquid metal based soft sensor, expecting to have different characteristics depending on the method of injecting liquid metal: (1) injecting with a syringe by manual, (2) injecting by controlling a linear actuator for injection and a diaphragm pump for suction, (3) injecting the liquid metal by vacuuming. In the first method, a sensor can be manufactured by simply injecting with a syringe, but the injection pressure is not constant and is difficult to control. In the second method, the pressure in the tube and the manufacturing time can be controlled by adjusting the suction pressure. The third method used the restoring force, generated by the pressure difference between vacuum and atmospheric pressure, for liquid metal injection. The durability and reliability of the fabricated soft sensor was validated through repeated tensile evaluation.