Advanced Residual Stress measurements and analysis

Residual Stress Center of Excellence offering clients control of residual stress levels in order to increase reliability and extend lifetime.

Key expertise:

• Unique service provider for NDT determination of residual stresses using neutron and synchrotorn techniques

• Co-developer of standards for synchrotron RS measurement (https://www.esrf.fr/home/news/industry-news/content-news/esrf-news-list/new-standard-for-residual-stress-measurement-in-metals.html

• Led international collaboration on new residual stress measurement techniques:https://www.dti.dk/services/easi-stress-european-activity-for-standardization-of-industrial-residual-stress-characterization/45496

We find the most appropriate solution for residual stress control by applying different analysis techniques depending on the individual sample and desired information . The residual stress can be measured accurately using both destructive and non-destructive methods, and information depth can range from surface-only to several cm in depth.

The choice of method depends on the component geometry, material, required spatial resolution, and on how deep into the material measurements are required. Ask our specialists to find out how we best can perform measurements on your product.

We offer both standard residual stress determination using lab-based X-ray diffraction, hole-drilling and contour mapping, and also residual stress measurements using X-ray or neutron radiation from large research facilities. Such analysis can determine the full magnitude and physical directions of stress in 3D inside an object. The techniques are non-destructive, and have fewer restrictions on object geometry. Due to the non-destructive nature, they also provide the opportunity to follow stress/strain evolution during processes such as fatigue testing or manufacturing.