Mechanical Stress Analysis by Eddy Current Method
نویسنده
چکیده
Abstract: A lot of progress is made in the last decade concerning the theoretical and practical aspects of eddy current testing. In addition to the defect characterization, actual studies deal with the metallurgical evaluation of materials. Surface examination allows the prediction of the material strength and consequently its life time. In order to obtain various microstructures and to modify the mechanical and metallurgical characteristics of materials, samples such as aluminum or steels have been submitted for mechanical stress. We have shown in this work that all microstructure modifications of the samples were detected and can be quantified by eddy current impedance measurement. The impedance analysis by eddy current will be correlated with the microstructure changes observed in the material because of aging, fatigue.
منابع مشابه
Design of Nondestructive System for Hardness of Carbonitrided Steel Parts Using Eddy Current Testing Method: Case study on the Tappet Parts
In this paper, a non-destructive eddy current test system was designed to evaluate the surface hardness of the carbonitrided steel parts. For this purpose, various samples of the tappet were used after the surface hardening and grinding operations as control samples and, if necessary, were subjected to destructive and non-destructive tests. Microstructural studies were performed with a microsco...
متن کاملAnalyse Des Contraintes Résiduelles Par La Méthode Des Courants De Foucault
Control by eddy current is one of techniques that’s very used in nondestructive evaluation of materials. These processes find an application significant in the determination of the mechanical and metallurgical parameters of materials. The object of this work is to carry out an analysis of the residual stresses in the material created by external solicitations and analysed by eddy currents as a ...
متن کاملEstimation of stress distribution in ferromagnetic tensile specimens using low cost eddy current stress measurement system and BP neural network
Estimation of the stress distribution in ferromagnetic components is very important for evaluating the working status of mechanical equipment and implementing preventive maintenance. Eddy current testing technology is a promising method in this field because of its advantages of safety, no need of coupling agent, etc. In order to reduce the cost of eddy current stress measurement system, and ob...
متن کاملQUALITY CONTROL OF PRECIPITATION HARDENED ALUMINIUM ALLOY PARTS VIA EDDY-CURRENT NONDESTRUCTIVE EVALUATION
Precipitation hardening is the most common method in the strengthening of aluminium alloys. This method relies on the decrease of solid solubility with temperature reduction to produce fine precipitations which impede the movement of dislocations. The quality control of aluminium alloy specimens is an important concern of engineers. Among different methods, non-destructive techniques are the...
متن کاملThe Application of Finite Element Method Analysis to Eddy Current NDE
The Finite Element Method for the computation of eddy current fields is presented. The method is described for geometries with a one component eddy current field. The use of the method for the calculation of the impedance of eddy current sensors in the vicinity of defects is shown. An example is given of the method applied to a C-magnet type sensor positioned over a crack in a plane conducting ...
متن کامل