This study deals with the durability tests of a new copper plated electrode process for self-sensing or self-healing Carbon Fiber Reinforced Plastic (CFRP) composites. The self-sensing or self-healing CFRP composites adopt carbon fibers as sensors or actuators. The electrical contacts at the electrodes have a significant effect on the self-sensing or self-healing ability. This research proposes a new electric copper plated process for fabricating reliable electrodes. Using single-ply specimens, electrical contact resistances after cyclic loading are measured. The cyclic loading test is performed to investigate the long term durability of these new electrodes. The new copper plated electrode was found to have high durability after cyclic loading and is appropriate for the practical self-sensing or self-healing CFRP composites.