Dr. Calvin Stewart and his team at The Ohio State University are working at the extremes. In 2021, Dr. Stewart founded the Materials at Extremes Lab (MATX) and began to assemble the tools and personnel he needed to push the boundaries of “advanced manufacturing, mechanical testing, and theoretical mechanics of materials subject to thermal, mechanical, and chemical extremes.”

This video covers the fundamentals of creating an effective speckle pattern for digital image correlation. In digital image correlation, one or more cameras take a series of images as a specimen deforms. Measurements are taken by precisely analyzing the position of unique groups of speckles on the surface of the object as it moves through successive images. Using an optimal speckle pattern is one of the most important factors in reducing measurement noise and improving overall DIC results, therefore, understanding the requirements of an ideal speckle pattern and how to apply one to a specimen is a vital part of DIC. In this tutorial, we briefly discuss the theoretical background of DIC, then we’ll cover general speckle pattern requirements and outline some common application methods.

We are proud to announce that two members of the Correlated Solutions Support Team recently received Level 1 DIC certification from iDICs, the International Digital Image Correlation Society.

From the inception of DIC at the University of South Carolina more than 25 years ago, the founders of Correlated Solutions have supported the effort to advance the practice of DIC around the world, and part of this effort involved helping to organize the International Digital Image Correlation Society (iDICs). In the years since, an important mission of iDICs was the standardization of DIC practice and the development of the Good Practices Guide for DIC and other training and educational opportunities. Recognizing the need to have trained and vetted DIC practitioners, iDICs has recently implemented the DIC Certification Program where industrial and research institutions can send their personnel to become certified DIC practitioners. Congratulations to Ian Adkins and Nick Lovaas (shown here in the field during trainings with VIC-3D) for all their hard work.

Correlated Solutions and Blink Technology Australia recently assisted Kevin Nievaart and his team at Swinburne University of Technology to successfully deploy the multi-system digital image correlation registration procedure which combines data from two or more VIC-3D DIC systems. This procedure provides a common coordinate system without any overlapping requirements and can dramatically reduce the effort and time needed to interpret and analyze deformation data. Ultimately, streamlining workflows with VIC-3D boosts the performance and research efficiency of the Smart Structures Lab. Special thanks to Kevin and his team for all the hard work!

The VIC-3D HS system from Correlated Solutions is a powerful measurement tool which combines state-of-the-art digital image correlation software with the latest high-speed cameras from around the world. As we prepare for the release later this year of VIC-3D 10, we are eager to put the best high-speed cameras through their paces to see how they perform.

From all of us at Correlated Solutions, thank you for another incredible year. No matter how you celebrate, may your focus be sharp and your calibration score low!