EikoTwin DIC

To provide accurate digital image correlation (DIC) results, the EikoTwin-DIC software must first calibrate the camera system. This is made using images of the structure in its reference state (unloaded). Using these images, the software determines the intrinsic parameters (the cameras focal lengths, optical centers, skews) and extrinsic parameters (camera positions and orientations in the…

Version 1.2 of EikoTwin DIC is available ! Here is a short-list of the main updates : EikoTwin DIC welcomes hybrid calibration! More robust (especially in the case of near-plane specimens), this new technique allow to calibrate separately your cameras intrinsic and extrinsic parameters, thanks to a one-of-a-kind calibration target. For more information, please contact…

Redactors: C.Minguet, F.Mathieu – EikoSim ; E.Chalumeau – ALPhANOV ; F.Hild – Université Paris-Saclay, ENS Paris-Saclay, CNRS ; R.Peiffer, S.Carpier – MBDA ALPhANOV[1], optics and lasers technology centre based in Talence since 2007, and MBDA[2], European leader in the Defence sector, have had a joint laboratory since 2019 for laser-matter interaction comprised of a cabin equipped with a…

In another article, we talked about the different techniques for creating a speckle pattern in digital image correlation, including the ability to vary the size and nature of the spots projected on the piece. But what size should your speckle pattern be? There is no “good” or “bad” speckle, or rather one cannot judge the…

Context Some structures have a long service life from commissioning to replacement. These structures, when they have a fundamental role, must be able to maintain their physical integrity throughout their service life. To do this, it is essential to ensure their reliability over time. In the case of such structures as metal water pipes, different…

Application of digital image correlation to tests on lattice structure obtained by additive manufacturing Interest in lattice structures is growing rapidly for the development of aeronautical and space components in particular. In addition to the significant mass gains they allow to consider, they offer the possibility of optimising their behaviour based on their constituent patterns….