Conformal metal crack detection sensor based on flexible graphene film antenna
Cong Tong, Rongguo Song, Huijuan Guan, Yingping Yang, Daping He
Abstract
Crack detection of metal structures is an important procedure to ensure the safe operation of metal structures. In this work, a metal crack sensor based on a highly conductive flexible graphene film is proposed. The sensor is designed based on conformal microstrip antenna composed of a flexible graphene film radiation patch and a flexible dielectric substrate. The prepared sensor exhibited a detection sensitivity of 36.82 MHz/mm demonstrated by both experimental and simulation results. Moreover, benefiting from the flexible nature of the graphene film, the proposed sensor shows good conformality which makes up the shortcoming of the traditional rigid crack detection device.
Topics & Concepts
GrapheneConformal mapMaterials scienceAntenna (radio)OptoelectronicsAcousticsNanotechnologyComputer scienceTelecommunicationsPhysicsGeometryMathematicsNon-Destructive Testing TechniquesUltrasonics and Acoustic Wave PropagationSmart Materials for Construction