Measurement of carbon fiber reinforced polymer electric conductivities by four-wire probe and two-wire probe

• Main Authors: Budijanto, Henokh, Budiman, Bentang Arief, Nurprasetio, Ignatius Pulung
• Format: Conference Proceeding
• Language: English
• Subjects: Carbon fiber reinforced plastics; Carbon fiber reinforcement; Conductivity; Contact resistance; Data processing; Electric contacts; Electrical resistivity; Electrodes; Fiber reinforced polymers; Warp; Weft; Wire
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0112866

This paper introduces four-wire probe and two-wire probe methods to find the Carbon Fiber Reinforced Polymer (CFRP) electric conductivity value. The conductivity of CFRP has orthotropic properties. Therefore, it is interesting to find the conductivity of CFRP in weft, warp, and thickness directions. To determine the conductivity value of CFRP, experiments were carried out using a two-wire probe and four-wire probe method. The difference between these two methods is the number of electrodes used in the measurement. The four-wire probe method, which uses four electrodes, has different resistance networks, thus yielding different characteristics compared to the two-wire probe method. Data processing was carried out, and the conductivity value was then obtained using the developed equations. The conductivity values obtained from the four-wire and two-wire probes were then compared. The results showed that the conductivity value by using a two-wire probe might not be accurate compared to the four-wire probe method. In the two-wire probe, there is contact resistance that can affect the measurement results. However, the two-wire probe method has a simple experimental setup compared to the four-wire probe method. Furthermore, the advantages of each method were comprehensively discussed.