期刊
STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
卷 20, 期 5, 页码 2747-2757出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1475921720972308
关键词
Electrical impedance tomography; carbon fiber reinforced polymer; damage detection; damage localization; delamination; numerical analysis
资金
- Christian Doppler Research Association
- Austrian Federal Ministry for Digital and Economic Affairs
- National Foundation for Research, Technology and Development
This article introduces a new current injection pattern for electrical impedance tomography, which improves hole detection quality in carbon fiber reinforced polymer plates and allows for delamination detection. The advantages of the new pattern are demonstrated through numerical finite element analyses and experimental validation.
In this article, we introduce a new current injection pattern for electrical impedance tomography. The pattern improves the quality of hole detection in carbon fiber reinforced polymer plates and allows the detection of delaminations. The new pattern is described in detail and compared to three widely used, classical injection patterns. The advantages of the new pattern are demonstrated by numerical finite element analyses for three test cases: a hole of 10-mm diameter, two simultaneous holes, and an ideal delamination in a circular region with a 50-mm diameter. The results are validated experimentally by comparing electrical impedance tomography measurements of a carbon fiber reinforced polymer plate with at first one, then two holes with a 10-mm diameter using classical patterns and the new pattern.
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