A Study of Plastic Deformation of 08G2B Steel Before and at the Yield Plateau by Digital Image Correlation Technique. Part 1. Formation of Plastic and Elastic Deformation Waves

Farber, V. M.; Polukhina, O. N.; Вичужанин, Д. И.; Хотинов, В. А.; Smirnov, S. V.

doi:10.1007/s11041-019-00416-z

Cited by 9 publications

(2 citation statements)

References 4 publications

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“…Various experimental tools tracked the spatial-temporal occurrences of the deformation waves in the deformed red sandstone samples during their loading. The generation of deformation waves in the rock samples was found to be related to the regions of elastic stress concentration of varying scales [42]. Under the three loading rates, the deformation waves' propagation rates were 3.0 × 10 −5 , 5.9 × 10 −5 , and 10.4 × 10 −5 m/s, respectively.…”

Section: Discussionmentioning

confidence: 92%

Spatial-Temporal Heterogeneity in the Deformation and Damage of Rock Samples: Experimental Study Using Digital Image Correlation Analysis

Yan

Shan

2022

Applied Sciences

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In situ observations and laboratory experiments showed that slow deformation waves widely exist in geomedia under loading conditions. Slow deformation waves’ behavior exhibits some similarities in media ranging from the scale as large as the Earth’s crust to the scale as small as the laboratory test samples. However, the mechanism underlying their generation has not been clarified yet. In this research an experimental study was performed on small-scale red sandstone samples subjected to uniaxial compression at the displacement rates of 0.1, 0.5, and 1 mm/min. Slow deformation waves under different loading rates were analyzed by speckle photography for microscopic characterization combined with the digital image correlation (DIC) technique. The Luders deformation bands were predominantly observed in the flow channels formed at the stage of macro-elastic deformation. The spatial-temporal heterogeneity of the rock sample surface was quantified, and the deformation waves’ propagation velocities under different loading rates were obtained. The linear relationship between the propagation velocities of slow deformation waves and the loading rates was determined. The research findings shed some new light on the evolutionary characteristics of the slow deformation waves.

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Section: Discussionmentioning

confidence: 92%

Spatial-Temporal Heterogeneity in the Deformation and Damage of Rock Samples: Experimental Study Using Digital Image Correlation Analysis

Yan

Shan

2022

Applied Sciences

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“…Концентраторы упругих напряжений -дипольные максимумы, формирующиеся вблизи порога упругости (близкого к пределу пропорциональности). Они находятся примерно на одинаковых расстояниях друг от друга, что является следствием возникновения стоячей упругой волны в растягиваемом образце [1].…”

Section: результаты и обсуждениеunclassified

Pre-yield and localized deformation band nucleation in a strain-aging low-carbon steel

Farber,

Polukhina,

Selivanova

et al. 2024

DREAM

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The features of plastic flow during tensile deformation of 08G2B steel samples exhibiting the effect of strain aging are studied by means of the digital image correlation method. Standard flat samples cut out from a sheet made by controlled rolling are tested for tensile strength after heat treatment according to the following conditions: 680 °C, holding time of 30 min, air cooling. It is shown that, at the stage of macroelastic deformation, there occur both diffuse plastic flow in separate parts of the sample under tension and the emergence of a nucleus center in the near-surface region, wherefrom a localized deformation band nucleus subsequently grows.

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Structure of Chernov–Luders Band in Normalized Steel 09G2S. Part 1. Bands of Localized Strain

et al. 2022

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A Study of Plastic Deformation of 08G2B Steel Before and at the Yield Plateau by Digital Image Correlation Technique. Part 1. Formation of Plastic and Elastic Deformation Waves

Cited by 9 publications

References 4 publications

Spatial-Temporal Heterogeneity in the Deformation and Damage of Rock Samples: Experimental Study Using Digital Image Correlation Analysis

Spatial-Temporal Heterogeneity in the Deformation and Damage of Rock Samples: Experimental Study Using Digital Image Correlation Analysis

Pre-yield and localized deformation band nucleation in a strain-aging low-carbon steel

Structure of Chernov–Luders Band in Normalized Steel 09G2S. Part 1. Bands of Localized Strain

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