Journal
INTERNATIONAL JOURNAL OF SMART AND NANO MATERIALS
Volume -, Issue -, Pages -Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/19475411.2023.2184880
Keywords
Electric resistance change method; Mxene; CNT; CuNps film sensor; damage localization; Weighting function
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Composite structures are susceptible to impact damage in practical engineering. Electric resistance change method (ERCM) is an ideal technique for damage monitoring. This study proposes a preparation method of MXene/CNT/CuNps thin film sensor and establishes the relationship between damage distance and resistance change. The effectiveness of the weight function compensation localization algorithm in accurately locating the impact point of the composite structure is verified.
Composite structures are sensitive to impact damage in practical engineering. Electric resistance change method (ERCM) is an ideal technique for damage monitoring of composite structures. Due to the anisotropy of fiber-resin matrix composites, impact location monitoring is difficult, and research on impact location of fiber composite laminates (FRPs) is limited. A preparation method of MXene/CNT/CuNps thin film sensor is proposed. According to the modeling simulation and theoretical calculation, the resistance change characteristics of the thin film sensor are obtained, the relationship between the impact distance and the resistance change is established, and the sensor array is designed. A three-point localization algorithm and a weight function compensation localization algorithm are proposed, which can improve the imaging accuracy of the impact position. The impact point location was observed and analyzed using ultrasonic C-scan technology. The results show that the weight function compensation positioning algorithm can accurately locate the impact of the composite structure, and the error in the X direction is 7.1%, the error in the Y direction is 0.03%, which verifies the effectiveness of the method.
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