Virtual test set-up

Hardware connection

Model-based image

processing

Eikotwin Digtal Twin

Reality-inspired simulations

EikoTwin Digital Twin

EikoTwin Digital Twin allows the engineer to improve their simulation by making the most of their test data.

It implements "augmented simulations", which use the measured data as boundary conditions, but also allows the identification of material parameters to bring the simulation closer to the expected result.

Principle

  • Integration of test results for the validation of simulations.
  • Import of sensor measurements and direct comparison with the simulation result.

Features

  • Use of measurements to enrich the simulation model.
  • Creation of measured boundary conditions to release idealized conditions.
  • Export of a simulation model enhanced with measurement information.

Results

  • Quantification of errors due to boundary conditions.
  • Automatic identification of the simulation parameters required (materials, etc.).
  • Determination of the residual model error.

Testimonials

IRT Saint Exupery

Using EikoTwin allowed us, through augmented simulation, to correct overly idealized boundary conditions, or to isolate regions of interest. The inverse identification proposed by Digital Twin also gave very promising results for reviewing the calibration and validation processes of the models by reducing the number of tests.

Ludovic Barrière

Project manager

Applications and 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

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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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