Dynamic piezoresistive response of hybrid nanocomposites

Audrey Gbaguidi; Muhammad Anees; Sirish Namilae; Daewon Kim

doi:10.1117/12.2260208

12 April 2017 Dynamic piezoresistive response of hybrid nanocomposites

Audrey Gbaguidi, Muhammad Anees, Sirish Namilae, Daewon Kim

Proceedings Volume 10168, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017; 1016817 (2017) https://doi.org/10.1117/12.2260208
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2017, Portland, Oregon, United States

Abstract

Hybrid nanocomposites with carbon nanotubes and graphitic platelets as fillers are known to exhibit remarkable electrical and mechanical properties with many potential strain and damage sensing applications. In this work, we fabricate hybrid nanocomposites with carbon nanotube sheet and coarse graphite platelets as fillers with epoxy matrix. We then examine the electromechanical behavior of these nanocomposites under dynamic loading. The electrical resistivity responses of the nanocomposites are measured in frequency range of 1 Hz to 50 Hz with different levels of induced strains. Axial cycling loading is applied using a uniaxial electrodynamic shaker, and transverse loading is applied on end-clamped specimen using modified speakers. In addition, a dynamic mechanical analysis of nanocomposite specimen is performed to characterize the thermal and dynamic behavior of the nanocomposite. Our results indicate that these hybrid nanocomposites exhibit a distinct piezoresistive response under a wide range of dynamic loading conditions, which can be beneficial for potential sensing applications.

Citation Download Citation

Audrey Gbaguidi, Muhammad Anees, Sirish Namilae, and Daewon Kim "Dynamic piezoresistive response of hybrid nanocomposites", Proc. SPIE 10168, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017, 1016817 (12 April 2017); https://doi.org/10.1117/12.2260208

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