Mobile QR Code QR CODE : Journal of the Korean Society of Civil Engineers
Title Experimental Relationship between Electrical Impedance of a Steel Wire and Applied Stress, Temperature, and Excited Frequency
Authors 응유옌 주이 훙(Nguyen, Duy-Hung) ; 김병화(Kim, Byeong Hwa)
DOI https://doi.org/10.12652/Ksce.2020.40.2.0183
Page pp.183-189
ISSN 10156348
Keywords 긴장력;전기적 임피던스;자가진단;비파괴 진단 Tensile stress;Electrical impedance;Self-diagnosis;Nondestructive evaluation
Abstract This paper presents an experimental investigation regarding the sensitivity of electrical impedance of a steel wire to tensile stress, ambient temperature and induced frequency. For various stress levels and temperatures, the electrical impedance of a steel wire has been measured on a self-sensing system. The three experimental cases are carried out at various temperature conditions, stress levels and applied frequencies. If the temperature increases and stress level decreases at a given frequency, the electrical impedance on the steel wire increases. The results show that the correlation between electrical impedance and temperature is a linear relationship at all stress levels. It is noted that the sensitivity of impedance to temperature is much higher than the stress.