Sources of measurement errors with digital image correlation

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In digital image correlation as in any measurement process, errors affect measured data. The characteristic of this method lies in the direct dependency between the test and the measurement error [1,2,3]. Indeed, errors need to be estimated for every new test. These errors can be classified in two categories: the bias corresponding to systematic errors…

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Camera calibration: principles and procedures

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The use of a multi-camera system for metrology and accurate measurements requires the calibration of these cameras. They can be represented mathematically by a projection model, in the form of a matrix, allowing the passage of the position of 3D points to their projection in 2D image space. The process of estimating the parameters of…

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EikoTwin DIC and the measurement of small strains

small strains

Innovation in the automotive industry Innovation is at the heart of the automotive industry: autonomous vehicles, shared mobility, advanced equipment, etc. In order to reinvent themselves and remain competitive, it is necessary for automotive industries to innovate and develop new technologies. It is therefore essential for these companies to perform realistic simulations. The objective is…

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The Batch mode: a new EikoTwin DIC plugin

Plugin Batch

In order to continuously improve the features offered by EikoTwin DIC software, EikoSim has developed a new optional plugin: the Batch mode. It enables to launch, through a configuration file prepared beforehand, the pre-calibration, calibration and displacement measurement for several EikoTwin DIC projects in EKT format. This partial automation of the data processing ensures significant…

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IRT Saint-Exupéry trusts us with our software : EikoTwin

IRT Saint Exupery

Ludovic Barrière is Project Manager at IRT Saint-Exupéry, he tells us about his experience with our software: EikoTwin DIC and EikoTwin Digital Twin. The software EikoTwin DIC in a few words EikoTwin DIC is an image processing software dedicated to the link between measurements and numerical simulations. It uses a patented measurement technology to provide…

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Safran Ceramics trusts EikoSim with the “Thermal” plug-in

Thermal plug-in

Benjamin Lacombe is a Mechanical Design Engineer at Safran Ceramics. He tells us about his experience with EikoTwin DIC and the development of the “Thermal” plug-in. « I work at Safran Ceramics, Safran group’s center of excellence for high-temperature composites. We are in charge of developing high-temperature solutions for tomorrow’s aircraft. We conduct a large number…

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Technical functionality: selection of the measurement mesh

Capture

On EikoTwin DIC, the measurements are directly expressed on the simulation mesh. In order to choose which areas of interest for the test are visible to the camera(s), the so-called measurement mesh must first be selected. Indeed, this mesh will be the one where the results will be calculated. It is therefore essential to select…

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Preparing your Digital Image Correlation test with Blender

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This article invites you to care about an unexpected topic: the preparation of digital image correlation tests with Blender. While research articles do not always mention this aspect of digital image correlation measurements, test preparation is a crucial step in the procedure. The aim is to ensure that the images that will be taken by cameras…

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Simulation validation with EikoTwin DIC

Simulation Validate With DIC

Simulation validation with EikoTwin DIC rely heavily on image processing. Image analysis methods provide full-field test data, that can be used to validate and improve your simulation. Using the unique method of “Model-Based testing”, EikoTwin DIC allows to measure displacements and strains of the observed parts directly on the simulation mesh. Thus, you will be…

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EikoTwin DIC 1.3 is available!

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On the menu of the main improvements of this first update of the year 2021 : Reduced computation times and lighter results. Emphasis has been placed on computation performance and storage in EKT files. New “Batch” mode. It will allow you to perform a series of calculations directly with EikoTwin DIC. Do not hesitate to…

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