Improved current injection pattern for the detection of delaminations in carbon fiber reinforced polymer plates using electrical impedance tomography

被引：12

作者：

Haingartner, Mathias ^{[1
,2
]}

Gschossmann, Sandra ^{[1
,2
]}

Cichocki, Max ^{[1
,2
]}

Schagerl, Martin ^{[1
,2
]}

机构：

[1] Johannes Kepler Univ Linz, Christian Doppler Lab Struct Strength Control Lig, Altenberger Str 69, A-4040 Linz, Austria

[2] Johannes Kepler Univ Linz, Inst Struct Lightweight Design, Linz, Austria

来源：

STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL | 2021年 / 20卷 / 05期

关键词：

Electrical impedance tomography; carbon fiber reinforced polymer; damage detection; damage localization; delamination; numerical analysis; ELECTRODE MODELS; DAMAGE; CFRP; DISTINGUISHABILITY;

D O I：

10.1177/1475921720972308

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：2747 / 2757

页数：11

共 32 条

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