Impact Damage Detection in Fiberglass Composites Using Low Acoustic Impedance-Based PZT Transducers

International Journal of Engineering and Technology Innovation

View Publication Info
 
 
Field Value
 
Title Impact Damage Detection in Fiberglass Composites Using Low Acoustic Impedance-Based PZT Transducers
 
Creator Mohammadabadi, Ali
Chamani, Alireza
Dugnani, Roberto
 
Subject robotics
IoT
internet
teleoperation
robot remote control
delay time
virtual private network
VPN
 
Description The objective of this work is to evaluate the feasibility of detecting damages caused by impacts in fiberglass-epoxy composites using lead-zirconate-titanate (PZT) transducers. Impacts were created by a hammer (unquantified energy) and an automatic impact system (quantified energy) in multiple composite sheets. The mechanism of the damage detection relies on the impedance measurement by a low acoustic impedance (LAI) transducer, which resonates in the radial mode rather than the regular thickness mode. The effect of surface roughness was investigated by using specimens with different quantified surface roughness values. It was shown that the final results are heavily affected by the rough surface and hard boundary conditions. Mainly, we aimed to evaluate the efficiency of low acoustic impedance technique in the damage detection of composites. The tests were carried out in the energy ranges of 10 to 54 joules. The surface of each specimen was gridded with a step size of 5 mm, and the impedance was measured for each location. The final results were normalized using a no-load condition as the reference point. It was shown that the proposed portable and easy-to-use LAI setup could detect the damages qualitatively. The normalized measured impedance was variable, but it showed a significant increase, in some cases as high as 100%, on the impact’s region.
 
Publisher Taiwan Association of Engineering and Technology Innovation
 
Date 2019-09-10
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
 
Identifier http://ojs.imeti.org/index.php/IJETI/article/view/3980
 
Source International Journal of Engineering and Technology Innovation; Vol 9 No 4 (2019); 302-313
2226-809X
2223-5329
 
Language eng
 
Relation http://ojs.imeti.org/index.php/IJETI/article/view/3980/871
http://ojs.imeti.org/index.php/IJETI/article/view/3980/900
 
Rights Copyright (c) 2019 Ali Mohammadabadi, Alireza Chamani, Roberto Dugnani
http://creativecommons.org/licenses/by-nc/4.0
 

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