PSI - Issue 23

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Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000 – 000 Structural Integrity Procedia 00 (2019) 000 – 000

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ScienceDirect

Procedia Structural Integrity 23 (2019) 559–564

© 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the ICMSMF organizers © 201 9 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the IC MSMF organizers. of non-destructive testing (coercive force, eddy current par et r, el -magnetic field intensity nd acoustic emission parameters) and character tic of real damag ( S * - relative area of he damaged surfac occupied by microcracks) at tension of ste l specimens. It was established that t achieve ent of ch racteristi st esses – the yield strength and ultimate stre gth – affect he magnetic and acoustic parameters. The real damage estimation was carri d out by tudying the microcra ks patterns t various stages of deformation of ste l specimens. The increase in damage during he ten i n was chara eriz d by a change in damage parameter S *. Correlation of real damage with change in physical characteristics of nondestructive testing was established. © 201 9 The Authors. Published by Elsevier B.V. This is an ope acces article under CC BY-NC-ND lic nse (http://creativecommon org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the IC MSMF organizers. 9th International Conference on Materials Structure and Micromechanics of Fracture Interrelation between Mechanical, Physical and Damage Parameters at Fracture of Steels M.R.Tyutin a * , L.R.Botvina a , V.P.Levin a and I.O.Sinev a a A.A.Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 49 Leninskiy prospect, Moscow, 119334, Russia 9th International Conference on Materials Structure and Micromechanics of Fracture Interrelation between Mechanical, Physical and Damage Parameters at Fracture of Steels M.R.Tyutin a * , L.R.Botvina a , V.P.Levin a and I.O.Sinev a a A.A.Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 49 Leninskiy prospect, Moscow, 119334, Russia Abstract Abstract In the study, we investigated changes in physical parameters of non-destructive testing (coercive force, eddy current parameter, self-magnetic field intensity and acoustic emission parameters) and characteristic of real damage ( S * - relative area of the damaged surface occupied by microcracks) at tension of steel specimens. It was established that the achievement of characteristic stresses – the yield strength and ultimate strength – affect the magnetic and acoustic parameters. The real damage estimation was carried out by studying the microcracks patterns at various stages of deformation of steel specimens. The increase in damage during the tension was characterized by a change in damage parameter S *. Correlation of real damage with change in physical characteristics of nondestructive testing was established. In the study, w investiga ed ch nge n phy ical

Keywords: strength; fracture; acoustic emission; physical properties; damage accumulation Keywords: strength; fracture; acoustic emission; physical properties; damage accumulation

1. Introduction 1. Introduction

The search for the relationship of structural material damage at various stages of loading with physical characteristics estimated by known non-destructive evaluation methods is among the tasks of both scientific and applied interest associated with the development of various areas of physics and fracture mechanics and the development of nondestructive evaluation methods. The urgency of this task, which increases with the aging of The sear h for th relationship f struct ral materi l da age at various stag s of l ading with physical characteristics estimated by known non-destructive evaluation m thods is among the t sks of bot scientific and applied interest associated with the development of various areas of physics and fra ture mechanics and the development of nondestructive evaluation methods. The urgency of this task, which increases with the aging of

* Corresponding author. Tel.: +7-499-135-9683; fax: +7-499-135-8680. E-mail address: mtyutin@imet.ac.ru * Correspon ing author. Tel.: +7-499-135-9683; fax: +7-499-135-8680. E-mail address: mtyutin@imet.ac.ru

2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the IC MSMF organizers. 2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an ope acces article under CC BY-NC-ND lic nse (http://creativecommon org/licenses/by-nc-nd/4.0/)

Peer-review under responsibility of the scientific committee of the IC MSMF organizers.

2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the ICMSMF organizers 10.1016/j.prostr.2020.01.145