期刊
ADVANCED COMPOSITE MATERIALS
卷 32, 期 1, 页码 1-20出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09243046.2022.2055514
关键词
additive manufacturing; carbon fiber-reinforced plastic; structural health monitoring; electrical resistance change method; self-sensing
The aim of this research is to investigate the cause of nonlinear behavior mechanism of change in electrical resistance of 3D printed CFRP due to tensile loading. The surface treatments and test speeds are found to affect the electrical resistance change.
The aim of this paper is to investigate the cause of nonlinear behavior mechanism of change in electrical resistance of 3D printed carbon fiber reinforced plastics (CFRP) due to tensile loading. The electrical resistance change method is a nondestructive testing method that helps detect strain and damage. In previous research for electrical resistance change method applied to 3D printed CFRP, the change in electrical resistance is different compared with the one of conventional CFRP. The behavior makes health monitoring difficult, and the phenomenon needs to be clarified. In this research, we focused on the electrode fabrication method and viscoelasticity effect during cyclic tests. Polishing and laser processing are used as surface treatments for electrode fabrication. Consequently, the treatments are found to affect the reverse piezo-resistivity. In addition, the decrease in electrical resistance depends on the test speeds of cyclic test. The viscoelasticity is found to affect the nonlinear behavior.
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