Fabrication and characterization of in situ structural health monitoring hybrid continuous carbon/glass fiber–reinforced thermoplastic composite

2021 ◽  
Author(s):  
Congcong Luan ◽  
Xinhua Yao ◽  
Jianzhong Fu
Keyword(s):  
Structural Health Monitoring ◽  
Glass Fiber ◽  
Health Monitoring ◽  
Thermoplastic Composite ◽  
Fiber Reinforced ◽  
Structural Health ◽  
Glass Fiber Reinforced ◽  
Fabrication And Characterization

Screen-printed nanocomposite sensors for online in situ structural health monitoring

2018 ◽  
Vol 33 (2) ◽  
pp. 236-253 ◽  
Author(s):  
Taimoor A Khan ◽  
Saad Nauman ◽  
Zeeshan Asfar ◽  
M Ali Nasir ◽  
Zaffar M Khan
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Local Stress ◽  
Stress Concentrations ◽  
Glass Fiber Reinforced Plastic ◽  
Structural Health ◽  
Nanocomposite Layer ◽  
Glass Fiber Reinforced ◽  
Screen Printed

In this article, we have explored screen printing as a fast and reliable process for the deposition of nanocomposite layer on glass fiber-reinforced plastic (GFRP) substrate for in situ structural health monitoring. The screen-printed sensor comprised of a thermoplastic matrix (high density polystyrene) and a dispersed nanofiller (carbon nanoparticles). Notches of different sizes (2.5 mm and 4.0 mm) were introduced to study the response of sensors to an existing damage. Stress concentrations were plotted across the width and the sensor results were correlated with the simulated stress concentrations to evaluate the response of sensors with respect to local stress concentrations. It was found that the screen-printed sensors responded to the stress concentrations since the layers were deposited in the vicinity of notches. The gauge factors altered due to the presence of notches indicating sensor sensitivity to the preexisting damage and resultant stress concentrations.

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