Experimental validation of a numerical simulation on a ballscrew system by 3D photoelasticity Y. Barranger, R. Bertolaso, P. Doumalin, J.C. Dupré, A. Germaneau and M. Cheikh EPJ Web of Conferences, 6 (2010) 32003 Published online: 10 June 2010 DOI: 10.1051/epjconf/20100632003