Composite materials provide mechanical and electrical stability across diverse environmental conditions, thereby enhancing sensor durability. This study aims to fabricate novel epoxy-embedded capacitive touch sensors, Type A (Touch sensor embedded) and Type B (embedded sensor with wire loop) configurations, and test them experimentally and compare their electrical and functional characteristics. Electrical characteristics are tested using neat epoxy as a reference, and the results indicate that the progressive decrease in resistivity from pure epoxy to Type B clearly demonstrates the role of sensor configuration in enhancing electrical performance. The functional characteristics were tested based on sensing behaviors and long-term durability. The results indicate that Type A exhibits enhanced touch sensitivity, with greater capacitance variation (ΔC) and a shorter response time. Type B provides better electrical stability and dielectric damping, resulting in increased SNR (signal-to-noise ratio), enhanced repeatability, more effective resistance to noise, and lower hysteresis. Frequency-dependent dielectrics showed consistent permittivity behavior, with capacitance variations decreasing at higher frequencies. Response time and ΔC varied significantly, according to the two-sample t-tests (p < 0.05). For long-term aging and error analysis, less variation in measurement (less than 6%) and a coefficient of variation of around 2% were observed.
T S,M Kumar. (2026). Performance Evaluation of Epoxy-Based Smart Composite with Integrated Touch Sensor. (e10940). Mechanics of Advanced Composite Structures, (), e10940 doi: 10.22075/macs.2026.41298.2005
MLA
T S,M Kumar. "Performance Evaluation of Epoxy-Based Smart Composite with Integrated Touch Sensor" .e10940 , Mechanics of Advanced Composite Structures, , , 2026, e10940. doi: 10.22075/macs.2026.41298.2005
HARVARD
T S M Kumar. (2026). 'Performance Evaluation of Epoxy-Based Smart Composite with Integrated Touch Sensor', Mechanics of Advanced Composite Structures, (), e10940. doi: 10.22075/macs.2026.41298.2005
CHICAGO
M Kumar T S, "Performance Evaluation of Epoxy-Based Smart Composite with Integrated Touch Sensor," Mechanics of Advanced Composite Structures, (2026): e10940, doi: 10.22075/macs.2026.41298.2005
VANCOUVER
T S M Kumar. Performance Evaluation of Epoxy-Based Smart Composite with Integrated Touch Sensor. MACS. 2026;():e10940. doi: 10.22075/macs.2026.41298.2005