Study on Electrical Resistance Tomography Simulation of Carbon Fiber Smart Layers on Two-Dimensional Curved Surface

Abstract

Based on the piezoresistive function character and the conductivity of carbon fiber smart layer (CFSL), a novel electrical resistance tomography (ERT) system of spherical and cylindrical CFSL has been developed for global health monitoring. Based on the background of the third generation nuclear containment vessel, CFSL is stuck on the surface of the structure, and the effectiveness of the ERT system is verified by virtual experiment. The image reconstruction results show that CFSL on two-dimensional curved surface has good sensing characteristics in the complex strain state. Compared with structural volumetric strain in the monitoring area, it indicates that the high electrical resistance of CFSL is distributed in the high strain area of structures, and the low electrical resistance of CFSL is just distributed in the low strain area of structures. Therefore the resistivity’s distribution of CFSL can reflect qualitatively the structural volumetric strain field.

Structural health monitoring of aerospace materials used in industry using electrical potential mapping methods

“…The electrical potential / resistance mapping techniques have been also employed in systems different than those of the aerospace environment. EPM lies on the exploitation of the intrinsic electrical properties of composite materials which change when the material is damaged [25,[29][30][31][32][33][34]. For CFRPs, the conductive reinforcement within an insulating matrix increases the challenges posed for the application of the technique.…”

“…Since, the EPM does not require expensive external devices, fast and low-cost inspection is feasible. More analytically the requirements of the method are simply i) an electrical current supplier and ii) a digital multimeter [25,[29][30][31][32][33][34]]. …”

Laser micro-fabricated multifunctional sensing layer for structural health monitoring

“…Compared with the independent distributed monitoring networks, MSL owns a higher integration, a more straightforward and clearer circuit layout, and fewer cables. Thus, it has excellent potential in aerospace [1][2][3][4] vehicles [4], pressure equipment [5,6], and composite materials [1,7].…”

Structural integrity assessment of aerostructures using innovative non-destructive evaluation techniques

“…Electrical potential mapping (EPM) technique does not require expensive external devices and, consequently, allows a fast and low-cost inspection [122,133,137,140,[229][230][231][232][233][234][235]. Basic requirements of the method are simply i) an electrical current supplier and ii) a digital multimeter [148,228,232,[236][237][238][239]. Within the scope of this section an electrical potential mapping technique (EPM) was developed in order to identify induced damage in aircraft materials.…”