@inproceedings{444174ad1d1e40909540512a5656bc0a,
title = "Smart patch integration development of compression connector structural health monitoring in overhead transmission lines",
abstract = "Integration of smart patches into full-tension splice connectors in overhead power transmission lines was investigated. Lead zirconate titanate (PZT)-5A was used as a smart material and an aluminum beam was used as a host structure. Negative electrode termination was examined by using copper adhesive tape and direct bonding methods. Various commercial adhesives were studied for PZT integration onto the host structure. Aluminum beam specimens with integrated PZT smart patches were tested under thermal cycling at a temperature of 125°C, which is the higher-end temperature experienced by in-service aluminum conductor steel-reinforced cables. Electromechanical impedance (EMI) measurements were conducted at room temperature, and the root mean square deviation (RMSD) of the conductance signals was used to analyze the EMI data. It has been shown that the negative electrode method has an important effect on the performance of the integrated PZT. The PZT displayed more susceptibility to cracking when copper tape was used than when direct bonding was used. The reliability of PZT in direct bonding depended on the adhesives used in bonding layers. Although a hard alumina-based adhesive can lead to cracking of the PZT, a higherature epoxy with adequate flexibility, such as Duralco 4538D, can provide the desired performance under target thermal cycling conditions. The RMSD parameter can characterize conductance signatures effectively. It also was demonstrated that RMSD can be used to quantify the fatigue of the PZT integration system, although RMSD is used primarily as a damage index in monitoring structural health.",
keywords = "PZT, compression connector, integration, smart patch, structural health monitoring, transmission lines",
author = "Hong Wang and Wang, {Jy An J.} and Fei Ren and John Chan",
note = "Publisher Copyright: {\textcopyright} 2016 SPIE.; Smart Materials and Nondestructive Evaluation for Energy Systems 2016 ; Conference date: 21-03-2016 Through 23-03-2016",
year = "2016",
doi = "10.1117/12.2218669",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Peters, {Kara J.} and Meyendorf, {Norbert G.} and Matikas, {Theodoros E.}",
booktitle = "Smart Materials and Nondestructive Evaluation for Energy Systems 2016",
}