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Nonplanar sensing skins for structural health monitoring based on electrical resistance tomography
Computer-Aided Civil and Infrastructure Engineering ( IF 9.6 ) Pub Date : 2021-05-07 , DOI: 10.1111/mice.12689
Jyrki Jauhiainen 1 , Mohammad Pour‐Ghaz 2 , Tuomo Valkonen 3, 4 , Aku Seppänen 1
Affiliation  

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.

中文翻译:

基于电阻断层扫描的结构健康监测非平面传感皮肤

基于电阻断层扫描 (ERT) 的分布式表面传感系统或传感皮肤为结构健康监测提供了替代传感技术,提供了分布式传感功能,例如损伤、应变和温度。然而,目前用于感测皮肤的计算技术仅限于平面。在本文中,为了克服这一限制,我们将基于 ERT 的表面传感推广到覆盖任意形状的三维结构的非平面表面;我们构建了一个框架,在该框架中我们使用黎曼几何技术重新制定 ERT 的图像重建问题,并以数值方式解决由此产生的问题。我们在一系列数值和实验研究中测试了这个框架。
更新日期:2021-05-07
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