Naslov
Circumventing the Curse of Resolution versus Spatial Resolution in Digital Image Correlation: From Local to Global and Regularized Approaches

Autori
Hild, François ; Leclerc, Hugo ; Roux, Stéphane ; Swiergiel, Nicolas ; Tomičević, Zvonimir

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Procedia IUTAM / - , 2012, 1-9

Skup
IUTAM Symposium on Advances of Optical Methods in Experimental Mechanics, invited lecture

Mjesto i datum
Peking, Kina, 10.10.2012. - 13.10.2012

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
High speed camera ; Long distance microscope ; Q4-DIC ; SEM pictures ; Spatiotemporal approach ; T3-DIC

Sažetak
Digital Image Correlation (DIC) is an ill-posed problem. To account for this difficulty, the needed regularization is often implicitly introduced through the choice a kinematic basis used to embed the sought solution for kinematic fields. Relaxation of this regularization, as motivated by enhanced spatial resolution, is unavoidably accompanied with a degradation of the measurement uncertainty. However, in the field of solid mechanics, a priori knowledge on the sought displacement field is often available, and this information is much more secure and physical than the choice of a specific basis selected for its ease of implementation or flexibility. The following discussion will thus be focused on different ways of supplementing DIC with mechanical information to achieve enhanced fidelity and robustness. In particular, the discussion will be focused on the resolution of the measurement technique and its relationship with the spatial resolution.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA