Publikasjoner og ansvarsområder
Experimental detection of forming limit strains on samples with multiple local necks
Sheet metal formability is traditionally described by the forming limit curve (FLC). Experimental FLCs are obtained by performing formability tests and determining failure strains. The strains are usually measured either by etching a grid on the sheet surface or by digital image correlation (DIC...
Ekspert om testjukset i Sapa: – Kan få alvorlige konsekvenser
Modeling of the rock cutting process in hard rock applications
Experimental detection of the onset of local necking in an aluminium sheet
Influence of volume fraction and distribution of martensite phase on the strain localization in dual phase steels
Determination of Ductile Fracture Parameters of a Dual-Phase Steel by Optical Measurements
Marciniak–Kuczynski and Nakajima tests of the dual-phase steel Docol 600DL (www.ssab.com/) have been carried out for a range of stress-states spanning from uniaxial tension to equi-biaxial tension. The deformation histories of the specimens have been recorded by digital images, and the displacement...
Modelling of Aluminium Components for crash loadings
Evolution of mechanical properties in a 7075 Al-alloy subject to natural ageing
A series of mechanical tests was used to characterise the evolution of yield strengths, r-values and work hardening during the natural ageing of a commercial 7075 aluminium alloy. The results show that there is a significant underlying change in anisotropy between the original O-condition and...
Simulation of yield surfaces for aluminium sheets with rolling and recrystallization textures
The influence of crystallographic texture and homogenization scheme on the yield surface for aluminium sheets has been studied numerically. A rate-dependent single crystal plasticity model was adopted to describe the behaviour of the grains, whereas the behaviour of the polycrystal was obtained...