https://scholars.lib.ntu.edu.tw/handle/123456789/425093
Title: | Field-Programmable Gate Array-Based Coating Impedance Detector for Rapid Evaluation of Early Degradation of Protective Coatings | Authors: | YUEH-LIEN LEE Kuo, Yu Tong Chen, Hung Hsun Hsieh, Yung An |
Keywords: | Coating | corrosion monitor | electrochemical impedance spectroscopy | field-programmable gate array | impedance measurement | Issue Date: | 1-Jan-2019 | Publisher: | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | Journal Volume: | 7 | Start page/Pages: | 20472 | Source: | IEEE Access | Abstract: | © 2013 IEEE. In this paper, a novel, compact, And field-programmable gate array (FPGA)-based coating impedance detector (CID 2.0) was proposed to rapidly detect the early degradation of coatings. An FPGA-based hardware design with an embedded analog-to-digital converter and digital-to-analog converter was successfully applied to develop CID 2.0. A method for generating high-quality signals for FPGA by using the delta-sigma modulation was used. This method provided higher measurement ranges and accuracies for detecting coating impedance values. The performance of CID 2.0 was compared with that of a conventional potentiostat. For comparison, the impedance value of ideal resistors and commercial coatings was measured using the proposed and conventional methods. The results indicated an optimal correlation between the impedance values measured using CID 2.0 and that measured using conventional potentiostat in the range of 10 6 -10 10 Ω cm 2 . Furthermore, when the continuous monitoring experiments were conducted, CID 2.0 exhibited high sensitivity to detect impedance changes associated with the coating delamination process. The preliminary results suggested that CID 2.0 can be used to observe the changes in the coating impedance values in the critical range to enable workers to determine whether coating maintenance should be scheduled. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/425093 | ISSN: | 2169-3536 | DOI: | https://api.elsevier.com/content/abstract/scopus_id/85062912531 10.1109/ACCESS.2019.2896996 |
Appears in Collections: | 工程科學及海洋工程學系 |
File | Description | Size | Format | |
---|---|---|---|---|
08632915.pdf | 6.25 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.