Eikotwin Virtual

Virtual test set-up

Hardware connection

 

Model-based image

processing

Reality-inspired simulations

 

EikoTwin Virtual

EikoTwin Virtual allows you to anticipate experimental difficulties by preparing completely virtual trials.

The use of imaging measurement techniques on real structures is often limited by the use of cameras in complex environments. Based on the open source software Blender, EikoTwin Virtual allows to prevent these problems and to estimate future measurement errors in order to make the right choices before the test.

Principle

  • Creation of a complete test scene from the meshes of the structure and its environment.
  • Realistic adjustment of lighting and textures.
  • Export of realistic images and test layout plans.

Features

  • Conversion of the finite element mesh to a dedicated format.
  • Import of native or generic formats.
  • Deformation of structures according to a finite element simulation result to model displacements.

Results

  • Exports series of "distorted" images directly exploitable in image processing.
  • Estimation of the expected errors in displacements and communication with the design office.

Applications et tutorials

Open source software to help prepare virtual tests

Image (1)

The first stable version of the blenDIC add-on has been released. It is a photo-realistic image generation tool for setting up and performing virtual tests involving digital image correlation using the open source 3D animation software Blender. BlenDIC is an open source (GPL) add-on to Blender that encapsulates a large number of tools allowing Blender…

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Hybrid calibration : a robust alternative to self-calibration

Image

Introduction This article is written as a complement to the article on good calibration practices recently published on our website. In general, it is very often possible to calibrate the camera system in EikoTwin-DIC thanks to the knowledge of the geometry of the part, and of the correspondence between points of the model and images…

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How to calculate the size of the speckle pattern using our spreadsheet to ensure a good measurement quality?

Fig.3 Article Mouchetis

In a previous article, we discussed how to choose the size of the speckle spots for your experiment. We introduced the necessary parameters to control in order to optimize the size of your speckle for each of your tests. As mentioned, although the quality of a speckle pattern can only be analysed with respect to…

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Mastering self-calibration with EikoTwin-DIC

Capture7ArticleBonnespratiquesd'etalonnage Anglais

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…

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EikoTwin DIC gets its 1.2 update !

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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…

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Design and validation of laser impact tests

Capture D’écran 2020 06 08 À 11.19.39

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…

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