Analysis of the similarity between residual magnetic field distribution and the stress and strain state for 7CrMoVTiB10-10 (T/P24) steel

Issue title: Selected Papers from the 15th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2011)

Article type: Research Article

Authors: Roskosz, Maciej^{a; *} | Bieniek, Michał^a

Affiliations: [a] Institute of Power Engineering and Turbomachinery, Silesian University of Technology, Gliwice, Poland

Correspondence: [*] Corresponding author: Maciej Roskosz, Institute of Power Engineering and Turbomachinery, Silesian University of Technology, Konarskiego 18, 44-100 Gliwice, Poland. E-mail: maciej.roskosz@polsl.pl

Abstract: Distributions of the residual magnetic field (RMF) were compared to the results of the calculations of plastic strain and residual stress for samples made of 7CrMoVTiB10-10 (T/P24) steel. The RMF was measured on the surface of samples with a various degree of strain. The calculations of the stress and strain state were conducted by means of the finite elements method with the use of a bilinear model of the material. Qualitative and quantitative relationships were found between plastic strain and the RMF components, as well as between residual stress and the RMF component derivatives. On the basis of the found relationships, the algorithm for the evaluation of residual stress was developed and preliminarily verified using the measurements of the RMF components. The trends of further research aiming to confirm the practical suitability of the developed algorithm for the evaluation of the stress and strain state were formulated.

Keywords: Residual magnetic field, residual stress evaluation

DOI: 10.3233/JAE-2012-1505

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 39, no. 1-4, pp. 521-527, 2012