Development of inhomogeneous fields under postcritical deformation of steel specimens in extension


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Abstract

The paper deals with experimental studies of inhomogeneous strain fields in the “neck” region in extension of plane and cylindrical specimens at the postcritical stage, which directly precedes the fracture, by using a video system and a digital image correlation method. We consider the problems of interpretation of extension diagrams obtained for specimens of various length with strain inhomogeneity in the working section of the specimen with a “neck.”We obtain experimental data about the distribution of longitudinal, transverse, and shear strain fields and the displacement fields in the region of the plane specimen localization by using the digital image correlation method.

About the authors

V. E. Vildeman

Perm National Research Polytechnic University

Email: evlomakin@yandex.ru
Russian Federation, Komsomolsky pr. 29, Perm, 614990

E. V. Lomakin

Perm National Research Polytechnic University; Lomonosov Moscow State University

Author for correspondence.
Email: evlomakin@yandex.ru
Russian Federation, Komsomolsky pr. 29, Perm, 614990; Moscow, 119991

T. V. Tret’yakova

Perm National Research Polytechnic University

Email: evlomakin@yandex.ru
Russian Federation, Komsomolsky pr. 29, Perm, 614990

M. P. Tret’yakov

Perm National Research Polytechnic University

Email: evlomakin@yandex.ru
Russian Federation, Komsomolsky pr. 29, Perm, 614990

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