Posts

Simulation Validate With DIC

Simulation validation with EikoTwin DIC

By Team Eikosim | 14 January 2021

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!

By Team Eikosim | 13 January 2021

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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Measurement errors and digital image correlation

By Team Eikosim | 7 January 2021

When conducting a test campaign instrumented by digital image correlation, it must be possible to determine the characteristic measurement error for the quantities of interest studied (measured displacement or strain). This analysis is essential to know whether the measurement made is indeed the desired “signal” and not the measurement “noise”. All measurements must be related…

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What are good Digital Image Correlation test practices?

By Team Eikosim | 24 November 2020

Importance of a good implementation of digital image correlation tests When performing a test by using Digital Image Correlation (DIC), many parameters must be taken into account: brightness, speckle pattern, camera placement. All these steps are essential to achieve the best possible images, in order to get the maximum information from them. Indeed, neglecting one…

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EikoSim Joins the Altair Partner Alliance to Increase Its Footprint Among Simulation Customers

By Team Eikosim | 19 November 2020

EikoSim today announced that it has become a member of  the Altair Partner Alliance (APA), to provide its image analysis and simulation validation tools to Altair simulation software customers. This partnership came together after EikoSim’s efforts to develop compatibility between its EikoTwin software and Altair’s simulation suite, giving Altair customers access to full-field validation data.…

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EikoTwin Virtual: a support tool for the preparation of your virtual tests with Blender

By Team Eikosim | 22 October 2020

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

By Team Eikosim | 7 October 2020

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…

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How to calculate the ideal size of the speckle pattern for your test?

By Team Eikosim | 4 September 2020

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

By Team Eikosim | 10 July 2020

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…

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EikoTwin DIC gets its 1.2 update !

By Team Eikosim | 15 June 2020

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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