TRANSIENT EFFECT OF UNIDIRECTIONAL CONTINUOUS CFRP IN ELECTRIFYING

Abstract

Abstract: The voltage response of unidirectional continuous carbon fiber reinforced plastics (CFRP) in electrifying to stable stage was studied with different flowing currents. In the case of current greater than or equal to 300 mA, the resistance of the CFRP specimen was found to decrease dramatically initially and become stable gradually after 100 s. The greater the current is, the more quickly the resistance varies in the initial stage and the greater the resistance change is in the stable stage. The temperature of CFRP increases gradually and the temperature curve is similar to transient response curve. In addition, the temperature change in the stable stage also increases with the increase of the current. The results reveal that transient effect of unidirectional continuous CFRP is mainly caused by the temperature sensitive response due to the ohmic heating. Based on the experimental results, for the purpose of accurately measuring the resistance change, a few suggestions were made on the applications of CFRP as piezoresistive sensors.

Key words: unidirectional continuous CFRP, four-probe method, transient effect

CLC Number:

TB332

LI Jing, ZHENG Hua-sheng, ZHU Si-rong. TRANSIENT EFFECT OF UNIDIRECTIONAL CONTINUOUS CFRP IN ELECTRIFYING[J]. Fiber Reinforced Plastics/Composites, 2018, 0(8): 32-35.

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