Virtual test set-up

Hardware connection

Simulation

correlation

Model-based image processing

Model-based image

processing

EikoTwin DIC

EikoTwin DIC is a DIC software dedicated to the link between measurements and numerical simulations.

It uses a patented Digital Image Correlation technology to provide automatic test-simulation comparison. It allows the determination of model errors and the identification of error sources. EikoTwin is the only global FE-based DIC software package, built with simulation validation in mind.

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EikoTwin DIC is available on the Altair Partner Alliance Platform

Principle

Image processing (digital image correlation) based on the finite element mesh.
Automatic calibration around the mesh.
Multi-view (no technical limit to the number of cameras).

Features

Many directly accessible fields: displacements, strains, residual (at pixel scale) on the surface of the part.
Export of figures that can be used directly in your presentation.

Results

Virtual sensors (displacement, strain gauges).
Immediate test/simulation comparison based on finite element simulation results.

"Thermal" plug-in

This add-on to EikoTwin DIC bridges the gap between kinematic measurements and infrared thermography.
Import infrared images directly into your digital model
Correlate the results with your thermomechanical simulation.

"Batch mode" plug-in

This tool multiplies the power of EikoTwin DIC by allowing batch processing of image series.
Process all your measurements in a batch process and increase the value you get from EikoTwin DIC.

Testimonials

« EikoTwin DIC is a key tool in our path to make simulation validation easier and accelerate developments while limiting risks. We want the design office and the test lab to speak the same language »

Nicolas Swiergiel

Photomechanics expert

« Importing the measurement results from EikoTwin DIC into Hyperworks was straightforward and easy. This allowed us to make our simulation more predictive very quickly and to determine the correct data set. »

Julien Tersac

CAE Engineer

« This allows us to be much more confident in the validation of our technologies and will lead us to propose a mature solution to our customers more quickly. »

Benjamin Lacombe

Mechanical Design Engineer

Applications and tutorials

Crash-test and image correlation: how to measure seat deformations and follow the dummy’s movements

Crash-tests are a crucial step in the development and certification of products, especially for the automotive, aeronautical and railway industries. These tests simulate collision or impact scenarios in order to evaluate the resistance and safety of products. Among the equipment used to perform these tests is the reverse catapult, which is a device that projects…

Digital Image Correlation (or DIC) is well-known for its static applications, but under the right circumstances, it is equally applicable to vibration testing. Here is as industrial example at Safran. As part of the development of increasingly high-performance aircraft actuators, Safran Landing Systems (SLS) must ensure the integrity of its systems during commissioning. With this…

Simulation credibility is a key aspect of the Virtual Testing concept. As the European leader in space launchers, Ariane Group participates with EikoSim in multiple Research and Development projects, including a RAPID R&D project (“MUTATION”) funded by the Direction Générale de l’Armement. This project aims at developing an industrial platform for test-simulation dialogue to meet…

In EikoTwin DIC, the calculation of displacement fields is performed on the simulation mesh. However, as this mathematical problem is by nature ill-posed, there is a mechanical regularization parameter that allows the user to add mechanical conditions to the field measurements. Contrary to most digital image correlation software, at EikoSim we have chosen to use…

In the context of crack propagation tests on composite material, EikoTwin image correlation solutions were used to meet a customer need. A post-processing script, exploiting the measurement data from EikoTwin DIC, was developed by EikoSim to bring satisfaction to the customer with a tailor-made solution. This work is part of Paul Nicolino’s engineering internship at…

By Floriane Soulas, R&D Engineer at EikoSim Context In the context of monitoring large-scale production automotive parts, many parts are subjected to repeated tests to ensure their integrity once they are put into service. Thus, the test that we address in this paper is dedicated to the “gust of wind” tests of an opening structure (see…

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