%0 Journal Article
%T Evaluation of the Poisson's ratio from the 3D laser scanning data
%A Lovre Krstulovic-Opara
%A Matej Vesenjak
%A Petar Marendic
%A Zoran Ren
%J Bulletin of Applied Mechanics
%D 2009
%I Czech Technical University, Prague
%X To determine the Poisson¡¯s ratio from a cylindrical compression specimen is a demanding issue in the case of a soft material specimen. In this paper a non-contact method based on the three-dimensional laser scanning technology, together with the CAD surface reconstruction, is presented. Evaluation of the Poisson¡¯s ratio is based on the volumetric changes of a cylindrical compression specimen. It is also shown that the three-dimensional scanning approach can be used for evaluation of engineering stresses when exact cross sectional area of the specimen cannot be precisely determined by standard contact measuring equipment.
%K 3D laser scanning
%K Poisson¡¯s ratio
%K engineering stress
%U http://bulletin-am.cz/index.php/vam/article/view/117