Proper Generalized Decomposition stereocorrelation to measure kinematic fields for high speed impact on laminated glass

Brightness and contrast corrections for stereocorrelation

“…The analysis of an impact test on laminated glass was used to validate the proposed implementation. The large out-of-plane motions, large stereo-angles of the cameras, and significant brightness and contrast variations make this experiment extremely challenging [27,33]. It was shown that including BCCs in stereocorrelation was extremely beneficial in the present configuration:…”

“…For the analyzed test, this increased performance is thus very rewarding. Following references [27,33], the kinematic field was regularized using an axisymmetric assumption. The reduced spatial basis successfully decreased the condition number of the Hessian matrix.…”

“…A PGD formulation of stereocorrelation was proposed [27,37]. Thus, including BCCs as extra degrees of freedom in the PGD framework is appealing to boost the computational speed [38].…”