Nonplanar sensing skins for structural health monitoring based on electrical resistance tomography

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http://hdl.handle.net/10138/336638

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Jauhiainen , J , Pour-Ghaz , M , Valkonen , T & Seppänen , A 2021 , ' Nonplanar sensing skins for structural health monitoring based on electrical resistance tomography ' , Computer-Aided Civil and Infrastructure Engineering , vol. 36 , no. 12 , pp. 1488-1507 . https://doi.org/10.1111/mice.12689

Title: Nonplanar sensing skins for structural health monitoring based on electrical resistance tomography
Author: Jauhiainen, Jyrki; Pour-Ghaz, Mohammad; Valkonen, Tuomo; Seppänen, Aku
Other contributor: University of Helsinki, Department of Mathematics and Statistics
Date: 2021-12
Language: eng
Number of pages: 20
Belongs to series: Computer-Aided Civil and Infrastructure Engineering
ISSN: 1093-9687
DOI: https://doi.org/10.1111/mice.12689
URI: http://hdl.handle.net/10138/336638
Abstract: Electrical resistance tomography (ERT)-based distributed surface sensing systems, or sensing skins, offer alternative sensing techniques for structural health monitoring, providing capabilities for distributed sensing of, for example, damage, strain, and temperature. Currently, however, the computational techniques utilized for sensing skins are limited to planar surfaces. In this paper, to overcome this limitation, we generalize the ERT-based surface sensing to nonplanar surfaces covering arbitrarily shaped three-dimensional structures; we construct a framework in which we reformulate the image reconstruction problem of ERT using techniques of Riemannian geometry, and solve the resulting problem numerically. We test this framework in series of numerical and experimental studies. The results demonstrate the feasibility of the proposed formulation and the applicability of ERT-based sensing skins to nonplanar geometries.
Subject: 111 Mathematics
212 Civil and Construction engineering
CRACK DETECTION
DAMAGE DETECTION
IMPEDANCE TOMOGRAPHY
ELECTRODE MODELS
PATTERNS
ELEMENTS
NETWORK
STRAIN
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