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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

Kategori
Vitenskapelig foredrag
Sammendrag
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.
Språk
Engelsk
Forfatter(e)
Institusjon(er)
  • SINTEF Industri / Materialer og nanoteknologi
Presentert på
SPE Eurotec
Sted
Barcelona, Spania
Dato
13.11.2011 - 15.11.2011
Arrangør
SPE
År
2011