Virtual test set-up

DIC systems

FE-based Digital Image Correlation

Model-based image

processing

Simulation

correlation

DIC Software for FEA Simulation Validation

EikoTwin DIC is a digital image correlation (DIC) software program and system that links measurements and numerical simulations.

It uses a patented Digital Image Correlation technology to provide automatic test-simulation comparison.

It allows the efficient determination of model errors and the identification and resolution of error sources. EikoTwin is the only global FE-based digital image correlation software package built with simulation validation in mind.

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Eikotwin Dic Software, Eikosim Dic Technology

EikoSim's engineering partners and customers

EikoTwin DIC available on Altair Partner Alliance

EikoTwin DIC is available on the Altair Partner Alliance Platform

EikoTwin DIC — FE-based image correlation on simulation geometry

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).

EikoTwin DIC — displacement and strain fields measured on structure

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.
Image acquisition: Import infrared images directly into your digital model.
Correlate the results with your thermomechanical simulation.

Plugin Batch Digital Image Correlation, image aquisition for high speed imaging

"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.

Feature demos

FE compatibility

Export your DIC results to a FE-compatible format

Multi-camera measurements

Use all of your cameras within the same reference system - and the right one

Measure close to the edge

Obtain a measurement up until the edge of your specimen thanks to mesh-based 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

« EikoTwin DIC helps us to increase our understanding of material testing and structural testing. It allows for accelerating development and validation process of our solutions. »

Vincent Vilamosa

System engineer

"The EikoTwin field measurement solutions have provided us with abundant data, which we can use directly in our simulation references, thanks to the fact that they take into account our needs in terms of file formats.

In addition, we are working on recalibrating our simulations with respect to experimental data, considerably enriched by the use of digital image correlation, which reinforces our confidence in using these models for our structural analyses and designs."

Céline Bergeron

Materials engineer

FAQ

What is the difference between EikoTwin DIC and GOM Correlate?

EikoTwin DIC is the only DIC software natively built on finite element meshes, designed specifically for FEA simulation validation. GOM Correlate is a general-purpose metrology tool without native FEA solver connectivity. EikoTwin DIC eliminates the error-prone projection step of point cloud data onto FE meshes. Learn more in our local vs global DIC comparison.

Can I use EikoTwin DIC without an FEA mesh?

Yes. EikoTwin DIC includes a built-in automatic mesher that generates a mesh directly from your images, without requiring an existing numerical model. This is particularly useful for material testing and specimens with simple geometry.

Can EikoTwin DIC be used for material characterisation?

Yes. Combined with EikoTwin Digital Twin, EikoTwin DIC enables automated material parameter identification - including elastic moduli, plasticity parameters (e.g. Johnson-Cook) and composite behaviour - by fitting simulation models to full-field experimental measurements.

Can EikoTwin DIC be used for high-speed testing?

Yes. EikoTwin DIC is compatible with high-speed cameras and can process image series acquired at several thousand frames per second. It has been used notably to measure airbag deployment during dynamic impact tests. See the application: high-speed DIC for airbag deployment.

What FEA solvers are compatible with EikoTwin DIC?

EikoTwin DIC is compatible with all major FEA solvers: Abaqus (.odb), Ansys, HyperWorks (Altair), PERMAS (INTES) and MSC Nastran. It is also available through the Altair Partner Alliance for HyperWorks users.

Applications and tutorials

Local DIC or Global DIC: Which is the Best Method for Your Application?

Introduction Digital Image Correlation (DIC) relies on two main algorithmic families: local DIC (or subset-based) and global DIC (or FE-based). Both approaches produce displacement and strain fields, but their internal workings, strengths, and limitations can be different. First, it is important to note that in 90% of cases, the results of the two methods are…

We are pleased to present our new Python API, designed to facilitate integration and automation of analyses with EikoTwin DIC. This API allows users to take full advantage of digital image correlation (DIC) results with customised post-processing. Its goal is to simplify our users’ workflows by providing a flexible and powerful interface for interacting with…

In the aerospace and automotive industries, the resistance of structures to various high-speed threats is a guarantee of certifiability. In aerospace, certification for bird strike is a major issue for the safety and certification of equipment and systems. Tests are carried out not only to assess the structural integrity of materials, but also to validate…

Experimental validation of forming processes, such as crimping, requires accurate characterization of local deformation fields, which can be achieved using DIC. A recent measurement campaign was conducted on an industrial part with severe geometric constraints, with an analysis area located on a section approximately 2 mm thick. Beyond the small size of the area of…

This article showcases a use of high-speed DIC for validating the behavior of a dashboard opening. Passenger safety is a top priority in the automotive industry. In the event of a collision, the airbag must deploy quickly and effectively to protect the vehicle’s occupants. However, this ultra-fast process is directly influenced by the structure and…

In a recent post, we mentioned how DIC can be used for modal analysis validation by comparing the measured field with a finite element simulation. A practical exercise was proposed to us by INTES: how to export results to a simulation pre-post, in this case that of the PERMAS software? In this case, we have…

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