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Cyclic Response of Smart Sensing Layer for Insitu Structural Health Monitoring of Composite Materials


Title: Cyclic Response of Smart Sensing Layer for Insitu Structural Health Monitoring of Composite Materials

Authors: Zaffar M. Khan, Saad Nauman, and Mohammad A. Walid

DOI: 10.33599/nasampe/s.19.1460

Abstract: In this paper we have investigated cyclic response of smart sensing layer deposited on GFRP substrate. The smart layer was composed of a thermoplastic matrix (High density Polystyrene) and a dispersed Nano-filler (Carbon Nano-particles). This is in continuation of our earlier work where we successfully demonstrated structural health monitoring capability of such smart layers. Cyclic tests were performed to demonstrate the repeatability of the sensor as well as various characteristics such as, linearity, saturation and general response characteristics. The substrate chosen was glass fiber laminated composite comprising of 8 layers of woven fabric reinforcements fabricated using VARTM technique. The smart sensing layer was deposited on the composite specimens in the center using doctor blade and a slot die. The dynamic response of the smart layer reveals that the sensors are able to follow loading and unloading cycles without any delay. The response of the sensor is frequency dependent with saturation / noise observed at high frequency cyclic testing. The smart layer also demonstrates repeatability when cyclic loads are applied.

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Conference: SAMPE 2019 - Charlotte, NC

Publication Date: 2019/05/20

SKU: TP19--1460

Pages: 11

Price: FREE

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