Residual stresses are vital to the overall strength and life of critical components. Most processes involved in the manufacture of a component can cause residual stresses that will be either detrimental or beneficial to its strength and longevity. Lambda has a distinguished history, and is well respected in the field of residual stress measurement, with over 100 technical papers and authorship of American Society for Metals "X-ray Diffraction Residual Stress Techniques". Our residual stress measurement capabilities and expertise provide our clients with superior product knowledge and solutions to make stronger, longer lasting components. The high spatial and depth resolution possible with the x-ray diffraction method are ideally suited for the study of residual stresses from machining, shot peening, grinding, and similar surface treatments, or for high spatial resolution adjacent to fractures, welds, and similar features. Electrolytic material removal is required for subsurface measurement. The subsurface residual stress distributions are corrected for the penetration of the radiation into the subsurface stress gradient, and for stress relaxation caused by sectioning or layer removal by electropolishing in accordance with SAE HS784, ASTM E915 and E1426. Lambda has developed unique capabilities for automated subsurface residual stress measurement and stress contour mapping.