To main content

USE OF DIGITAL IMAGE CORRELATION AND INVERSE MODELING TO DETERMINE RESIDUAL STRESS IN AXISYMMETRIC POLYMER COMPONENTS

USE OF DIGITAL IMAGE CORRELATION AND INVERSE MODELING TO DETERMINE RESIDUAL STRESS IN AXISYMMETRIC POLYMER COMPONENTS

Category
Conference lecture and academic presentation
Abstract
This paper presents a new method to determine residual stress profiles in cables and other axisymmetric objects using digital image correlation and inverse modeling. 3D digital image correlation with two cameras and stereo-vision was used to determine full-field displacements resulting from cutting a slit in a disk made from cable insulation. These displacements were compared to predicted displacements in a finite element analysis of the cutting. Differences between nodal displacements and the corresponding measured displacements were used to construct a cost function which was iteratively minimized by changing the residual stress field used as initial condition in the finite element simulation.
Language
English
Author(s)
Affiliation
  • SINTEF Industry / Materials and Nanotechnology
Presented at
SPE Eurotec
Place
Barcelona, Spania
Date
12.11.2011 - 14.11.2011
Organizer
SPE
Year
2011