Dynamic Detection Based on Planar Array Capacitance for Adhesive Defects of Thermal Protection Structure

Abstract The defect detection of thermal protective structures is great significance in ensuring the safe flight aircraft. In this paper, a dynamic measurement method based on planar capacitance sensing principle proposed to solve problem detecting defects adhesive layer large-area protection structures. This paper analyses capacitive and establishes array system. dielectric distribution structural components be measured obtained at different locations by moving electrode sensors regularly. To obtain information complete structure, adjacent spliced fused. achieve precise location overlapping areas image fused, an alignment coordinates adopted. experimental results show that our can detect visualization layer.