Detection of Superficial Defects in the Insulation Layers of Aviation Cables by Infrared Thermographic Technique
Source abstract
Abstract
Superficial defects in the insulation layers of aviation cables can cause serious failures of and disasters for aircraft. Considering the critical importance of safety for aircraft, there is a need to develop a nondestructive technique to detect these kinds of defects in aviation cables. The objective of this paper is to investigate defect detection in aviation cable insulation by an infrared technique. The temperature distribution in the tested cable insulation surface under different thermal excitations and its time variation law are firstly analyzed by numerical simulation. Experimental testing is simultaneously conducted to study the influence of insulation wear defects on the temperature distribution of the cable surface. Complex background temperature distributions are eliminated in infrared images to improve the recognition of defects and extract the difference of the cable surface to draw a curve. The obtained results clearly indicate that the temperature variation interval in the curve can successfully reflect the sizes and locations of insulation defects.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Electrical Fault Detection and Protection · Thermography and Photoacoustic Techniques · Fire effects on concrete materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Energy and Power Engineering, Beihang University, Beijing 100190, China
AVIC China Aero-Polytechnology Establishment, Beijing 100028, China
Funding
Ministry of Industry and Information Technology
References (28)
Show source-provided references
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