Mechanical Performance and Electrical Resistance Properties of Plain Woven Carbon Fiber‐Reinforced Epoxy Composites Under Quasi‐Static and Cyclic Loading
Source abstract
Abstract
ABSTRACT This study proposes a novel, sensor‐free approach for in situ structural health monitoring of plain woven carbon fiber‐reinforced polymers (PWCFRPs) based on their intrinsic electrical resistance behavior under bending fatigue. Using the two‐probe method, we monitor electrical resistance changes in real time during three‐point bending tests on PWCFRP specimens of two thicknesses (4.0 and 4.7 mm). Static and fatigue tests reveal that thicker specimens exhibit superior bending strength, stiffness, and fatigue life. Crucially, resistance variations closely correspond to damage evolution—from initial matrix cracking and interfacial debonding to final yarn fracture. The observed transition from a negative pressure‐resistance effect in early cycles to a sharp resistance increase at failure provides a quantifiable indicator of structural degradation. This correlation enables effective health monitoring without external sensors. The findings establish a foundation for intelligent composite structures capable of self‐sensing via the simple and practical two‐probe resistance measurement technique.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Smart Materials for Construction · Mechanical Behavior of Composites · Structural Behavior of Reinforced Concrete
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Civil Engineering and Architecture East China Jiaotong University Nanchang Jiangxi China
State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure East China Jiaotong University Nanchang China
Engineering Research & Development Centre for Underground Technology of Jiangxi Province Nanchang China
Department of Architecture and Civil Engineering City University of Hong Kong Kowloon Hong Kong China
Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Kowloon Hong Kong China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Jiangxi Province · Basic and Applied Basic Research Foundation of Guangdong Province · Yancheng Institute of Technology
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