CONTROLLING TESTING MACHINES WITH DIGITAL IMAGE CORRELATION

Xavier Fayolle (1) , Sylvain Calloch (1) , François Hild (1)

1 LMT - Laboratoire de Mécanique et Technologie

It is proposed to discuss a strategy to control a mechanical test by using digital image correlation. A two-loop system is developed to integrate a sub-pixel correlation algorithm to evaluate the average strain of a region of interest and control a servo-hydraulic testing machine. An a priori uncertainty analysis is validated a posteriori with actual strain measurements. A tensile test is analyzed with the developed system.

Mots clés: Photomechanics

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

Xavier Fayolle, Sylvain Calloch, François Hild. CONTROLLING TESTING MACHINES WITH DIGITAL IMAGE CORRELATION. Experimental Techniques, 2007, 31 (3), pp.57-63. ⟨10.1111/j.1747-1567.2007.00152.x⟩. ⟨hal-00199383⟩