Structural Health Monitoring using Electrical Resistance Tomography Based Sensing Skin: Detecting damage, corrosive elements, and temperature change
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CitationRashetnia, Reza. Smyl, Danna. Hallaji, Milad. Seppänen, Aku. Pour-Ghaz, Mohammad. (2017). Structural Health Monitoring using Electrical Resistance Tomography Based Sensing Skin: Detecting damage, corrosive elements, and temperature change. 9th International Conference on Inverse Problems in Engineering (ICIPE): papers, 2017,
A sensing skin is a two-dimensional large-area sensor which consists of a thin layer of electrically conductive material applied to the surface of structures in the form of paint or a pre-manufactured thin film. The sensing skin is engineered to locally change electrical conductivity in response to some stimulus such as temperature change, strain, or the presence of specific chemical elements. The local change in electrical conductivity of the sensing skin is then detected, localized, and quantified with electrical resistance tomography (ERT). Sensing skin has many applications in structural health monitoring. In the present paper, we outline our recent works in developing sensing skin for detecting cracking, the presence of chlorides, and temperature change. We also discuss the development of a multi-functional multi-layer sensing skin that simultaneously detects multiple stimuli. We discuss the application-specific computational techniques developed for sensing skin and present experimental results that show the successful applications of sensing skin in structural health monitoring.