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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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Design and validation of laser impact tests

By Team Eikosim | 12 June 2020

ALPhANOV, optics and lasers technology centre based in Talence since 2007, and MBDA, European leader in the Defence sector, have had a joint laboratory since 2019 for laser-matter interaction comprised of a cabin equipped with a high-power infra-red source. Thanks to a flexible and durable architecture, complex experiments, quickly reconfigurable, highly instrumented, and safe for…

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High-temperature tests for ceramic matrix composites

By Team Eikosim | 10 April 2020

As a new member of EikoSim team, I was offered the opportunity to present an overlook of my thesis work dealing with high-temperature experiments for SiC/SiC composites, which was carried out in LMT under the supervision of F. Hild and in collaboration with Safran Ceramics under the supervision of V. Herb and B. Lacombe. Credits…

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What is a good Digital Image Correlation speckle pattern?

By Team Eikosim | 19 March 2020

In another article, we talked about the different techniques for creating a speckle pattern in digital image correlation, including the ability to vary the size and nature of the spots projected on the piece. But what size should your speckle pattern be? There is no “good” or “bad” speckle, or rather one cannot judge the…

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