Journal: Russian Journal of Nondestructive Testing
Publication date: 23 December 2019
Abstract:
A nondestructive eddy current method has been used to characterize microstructural features of Hadfield steels subjected to various conditions of heat treatment. The heat treatment parameters including quenching media (furnace, air, and water) and tempering temperatures (in the range of 200–600°C) were varied to obtain different microstructures. Read more
A presentation entitled “Engineering Research” was made by members of the Center Of Non-Destructive Evaluation on the occasion of Research and Technology Commemoration Week in December 2019.
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The research project entitled “Design and construction of non-destructive eddy current device in order to characterize the railway parameters of Mashhad City Train Operation Company” has been selected and unveiled as one of the top 10 projects in Khorasan province in the festival and exhibition commemorating Research and Technology Week in 1398. This festival was held with the presence of 252 participants from the participation of students of the Faculty of Technology, Research, Executive Research Fields, Universities and Scientific and Technological Fields of Khorasan on December 12-14, 2019 at the permanent location of Mashhad Exhibition.
Read moreJournal: Journal of Magnetism and Magnetic Materials
Publication date: 2 December 2019
Abstract:
Variation in chemical composition is one the most important parameters that affects the microstructure and mechanical properties of powder metallurgical (PM) steel parts. Therefore, utilization of nondestructive methods to determine the chemical composition and microstructural/mechanical properties of a given PM steel sample could be a subject of importance. Read more
Journal: Surface & Coatings Technology
Publication date: 18 October 2019
Abstract:
The present paper aims to enhance the accuracy of surface hardness and case depth measurement of induction hardened steel parts using statistical modeling methods and electromagnetic nondestructive techniques. In this research, to create various hardened layers with different thicknesses, eight different conditions of induction hardening treatments have been performed on cylindrical AISI 1045 steel samples. Read more
Journal: Nondestructive Testing and Evaluation
Publication date: 05 Sep 2019
Abstract:
in this paper, a combination of non-destructive magnetic technique and artificial neural networks is introduced, firstly, to ensure that the heat treatment process applied to a given API X65 steel sample results in desired microstructure and mechanical properties and secondly, to determine thickness variation which may occurs as a result of corrosion effect. To evaluate the effects of microstructure/mechanical properties and thickness variations on magnetic parameters, the magnetic hysteresis loop method has been applied on API X65 steel specimens with the thicknesses of 1–4 mm, each subjected to four different heat-treating cycles (austenitised samples were cooled in furnace, air, oil and water). Read more
Journal: Journal of materials engineering and performance
Publication date: 15 May 2019
Abstract:
In nondestructive evaluation -NDE- of heat-treated steels, different variables of the heat treating process have complex effects on outputs of NDE methods, and hence, the effect of one desired variable on NDE outputs should be evaluated to help interpreting the changes. Read more
Journal: Nondestructive Testing and Evaluation
Publication date: 27 Feb 2019
Abstract:
It is accepted that work-hardening of Hadfield steels during plastic deformation results in the formation of mechanical twinning, which, in turn, varies the mechanical properties up to a certain depth below the surface. Read more
Journal: Research in Nondestructive Evaluation
Publication date: 05 Feb 2019
Abstract:
The aim in this article is to evaluate microstructural changes, hardness variations, and wear behavior of H13 hot work tool steel as a function of austenitizing and tempering temperature using nondestructive magnetic hysteresis loop method. Read more
Journal: NDT & E International
Publication date: 24 January 2019
Abstract:
In the present paper, application of data fusion coupled with three electromagnetic nondestructive technologies (magnetic hysteresis loop, Barkhausen noise, and eddy current) has been explored to achieve higher accuracy and reliability of measurements. Read more