Hill Engineering and VEQTER are excited to announce a new collaborative publication on the reproducibility of the Deep-Hole Drilling (DHD) residual stress measurement method. This study examines the consistency and reliability of Deep-Hole Drilling, providing valuable insights into its application in engineering stress analysis.
The study has been submitted to the Society for Experimental Mechanics (SEM) Annual Conference and Exposition 2025.
Below is the abstract text:
The Deep-Hole Drilling technique involves drilling a reference hole through the component and accurately measuring its diameter before and after residual stress release by trepanning coaxially around it. The measured deformation of the reference hole (before and after residual stress release) enables the original residual stresses to be calculated using elasticity theory. In 2019 Hill Engineering licensed VEQTER Ltd.’s world-leading Deep-Hole Drilling (DHD) technology. Under this agreement, Hill Engineering is delivering state-of-the-art DHD measurements within the North and South American Continents. This presentation will provide a summary of DHD measurements performed on a steel bent-beam specimen designed to demonstrate the reproducibility of the DHD process between VEQTER and Hill Engineering
For more information about the Deep-Hole Drilling method or any of the other residual stress measurement techniques employed in our laboratory, please contact us.