Novel detection approach for thermal defects: Study on its feasibility and application to vehicle cables

Abstract

It is important to accurately assess the thermal defect state of equipment to ensure its safe operation. A novel thermal defect detection method called the square even-order derivative method is proposed. First, the derivative functions of temperature were constructed to investigate the main-side-peak characteristics of the derivative curve, and the mathematical expressions for the position, depth, intensity of the defects, and parameters of the derivative curve were deduced, which can be used to quantitatively detect the defects. Then, numerical and experimental analyses of an example case of defected epoxy resin plates were carried out to verify that thermal defects can be effectively and accurately detected by the proposed method. Finally, the method was applied to a vehicle cable to detect its thermal defects in another example case of defected vehicle cable, which preliminarily validated the feasibility of the proposed method in practical applications.

Recent developments in the design, development, and analysis of the influence of external magnetic-field on gas-metal arc welding of non-ferrous alloys: review on optimization of arc-structure to enhance the morphology, and mechanical properties of welded joints for automotive applications

“…Starting from 1960 to 2020 a lot of researches have been done, at the international level and to some extent at the national level, to ascertain the influence of EMF on weld feature and to advocate the same to be used process parameter [ 81 , 82 , 83 ]. Following the 2000s, the majority of the research has aimed at exploring the effect of variable magnetic fields on the “droplet-transfer”, and the “spatter-control”.…”

Identification of localized defects and fault size estimation of taper roller bearing (NBC_30205) with signal processing using the Shannon entropy method in MATLAB for automobile industries applications

“…The test was interrupted periodically and images of cracks were taken, after which the test was restarted again. It has been noticed that misalignment has a distinct effect on crack propagation rate [ 61 , 62 , 63 ]. It has been observed that the defect initiates from the edge and grows along the rolling direction and continues to spread with respect to time [ 64 , 65 , 66 ].…”

IGDT-Based Robust Operation of Thermal and Electricity Energy-Based Microgrid with Distributed Sources, Storages, and Responsive Loads

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