VVUQ references & resources for solid mechanics & aerospace
By Florent Mathieu, CEO of EikoSim After several occasions where I’ve been given advice to consult specific documents in the field of validation testing and VVUQ (Verification, Validation, and Uncertainty Quantification), I’ve decided to gather them in one article. Here is a more detailed list of important papers, books or websites that I found along…
What is VVUQ (Verification, Validation, and Uncertainty Quantification)?
By Florent Mathieu, CEO of EikoSim In the world of scientific simulations, ensuring accuracy, reliability, and credibility is of utmost importance. To achieve this, scientists and engineers employ a rigorous process called Verification, Validation, and Uncertainty Quantification (VVUQ). This article explains what VVUQ involves, where it applies, and how it fits into larger simulation quality…
Thermomechanics on CFRP composite: tracking both crack and temperature with a single setup
On a CFRP specimen, EikoTwin combines stereo DIC and an infrared camera in a single setup: displacement, Lagrangian temperature and crack tracking on the same finite element mesh.
Advantages of imaging-based structural test instrumentation
By Florent Mathieu, President & co-founder of EikoSim It is fairly easy to understand the technical value of measurement by digital image correlation. For the test engineer, it makes it possible to measure over a wider area, to better understand the physical phenomena at play, and to perform a non-contact measurement. The simulation engineer, for…
Multi-camera DIC and model calibration of a turbine blade – A collaboration between Safran, EikoSim and Ansys
This article presents a multi-camera DIC instrumentation approach developed as part of a collaboration between Safran Group, EikoSim and Ansys. As part of the development of ever more high-performance aerospace components, the validation of simulation models is a crucial step in ensuring the reliability of designs. This is particularly true for parts subjected to complex…
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…
EikoTwin v2026.1 – release notes
EikoTwin DIC The new version of EikoTwin DIC includes a brand new Python API, simplifies marker tracking, and enables new analyses. EikoTwin Vision We spent hours fine-tuning EikoTwin Vision’s behaviour to make it simpler, faster and more enjoyable to use. EikoTwin Digital Twin EikoTwin Digital Twin receives a host of improvements with more robust analysis…
EikoTwin DIC Python API demo
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…
FEA Model Validation with DIC — Bird Strike Impact Testing
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…
Forming and DIC: measurement of large deformations
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…
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