Evaluation of mechanical properties and damage sensing performance of functionalized carbon nanotube modified epoxy-carbon fiber

Chih-Hung Chiang; Kousar Jahan; Muhamad Hidayat; David Kumar; Chia-Chi Cheng

doi:10.1117/12.2660954

18 April 2023 Evaluation of mechanical properties and damage sensing performance of functionalized carbon nanotube modified epoxy-carbon fiber

Chih-Hung Chiang, Kousar Jahan, Muhamad Hidayat, David Kumar, Chia-Chi Cheng

Author Affiliations +

Proceedings Volume 12487, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVII; 124870H (2023) https://doi.org/10.1117/12.2660954
Event: SPIE Smart Structures + Nondestructive Evaluation, 2023, Long Beach, California, United States

Abstract

Uniform distribution and strong interaction of carbon nanotubes in a polymer matrix have resulted in improved performance of the pure polymer. In this work, MWCNTs (CNTs) and carboxylic acid functionalized MWCNTs (CNTs-COOH) were dispersed into the epoxy resin to improve the intrinsic damage sensing property of woven carbon fiber reinforced epoxy (CFRP) composite laminates. We prepared the MWCNT-modified CFRP composites (CNT_CFRP and CNT-COOH_CFRP) with varying MWCNT concentrations (0.25 wt% ˗ 1 wt%) and studied the effect of functionalization and concentration of MWCNTs on the mechanical, and electrical properties of CFRP laminates. A pronounced increase in the tensile strength and tensile modulus of CFRP laminate was achieved with the introduction of 0.5 wt% CNTs and CNTs-COOH. The damage sensing capability of modified CFRP laminate was investigated by measuring electrical resistance upon loading.

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Chih-Hung Chiang, Kousar Jahan, Muhamad Hidayat, David Kumar, and Chia-Chi Cheng "Evaluation of mechanical properties and damage sensing performance of functionalized carbon nanotube modified epoxy-carbon fiber", Proc. SPIE 12487, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVII, 124870H (18 April 2023); https://doi.org/10.1117/12.2660954

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