Studying the influence of the loading system on the spatial-time inhomogeneity of inelastic deformation in metals by analyzing strain and temperature fields

The paper studies the patterns of the spatial-temporal inhomogeneity due to the jerky flow in metals by optical methods of experimental mechanics, namely, the digital image correlation technique and the infrared analysis. The subject of investigation is the inhomogeneous strain and temperature field...

Full description

Saved in:
Bibliographic Details
Main Authors: Tretyakova, Tatyana V., Wildemann, Valery E., Lomakin, Evgeniy V.
Format: Conference Proceeding
Language:English
Subjects:
Concentrators
Correlation analysis
Deformation
Digital imaging
Elastoplasticity
Infrared analysis
Inhomogeneity
Optics
Portevin-le Chatelier effect
Stiffness
Strain analysis
Tension tests
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The paper studies the patterns of the spatial-temporal inhomogeneity due to the jerky flow in metals by optical methods of experimental mechanics, namely, the digital image correlation technique and the infrared analysis. The subject of investigation is the inhomogeneous strain and temperature fields at the stage of initiation and propagation of strain bands due to the Lüders behavior and the Portevin–Le Chatelier (PLC) effect. The main aim of the study is to estimate the influence of stress concentrators and loading system stiffness on the behavior patterns of materials at the elastoplastic and postcritical deformation stages by using original specimens with complicated geometry and to interrelate between local strain jumps and temperature bursts during uniaxial tension tests.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4967053