Layered half-space modeling of piezoelectric TPMS-based CNT/PDMS composites under surface loadings

Area of Science:

• Materials Science
• Composite Materials
• Nanotechnology

Background:

• Piezoelectric (PE) composites are crucial for various applications.
• Carbon nanotube (CNT)-doped polydimethylsiloxane (PDMS) offers tunable properties.
• Triply Periodic Minimal Surface (TPMS) geometries provide unique structural advantages.

Purpose of the Study:

• To investigate the static response of PE composites with CNT-doped PDMS matrix and TPMS reinforcement.
• To analyze the effect of CNT volume fraction and agglomeration on composite behavior.
• To explore the potential of microstructural optimization for advanced PE composite design.

Main Methods:

• Utilized an eigenvalue-eigenvector approach for layer solutions.
• Employed the Dual Variable and Position (DVP) method for multilayered configurations.
• Applied boundary and interface conditions to obtain high-frequency domain results.

Main Results:

• Examined composites with varying CNT volume fractions (0% to 0.891%) and agglomeration levels (ζ=0.15, 0.40).
• Investigated TPMS-based PE phase reinforcement at volume fractions of 10% to 40%.
• Demonstrated the significant impact of microstructural parameters on composite performance.

Conclusions:

• Microstructural optimization is critical for developing high-performance PE composites.
• The study provides insights into designing composites for geophysical sensors and large-scale devices.
• Findings underscore the potential of CNT-doped PDMS and TPMS architectures in advanced materials.