The Path to Absolute Strain Measurement

Introduction As leaders in the field of HR EBSD the team here at BLG Vantage has naturally been working towards a solution for absolute strain measurement. Numerous attempts by others have run into limitations and problems  -as discussed below. In summary, HR EBSD or High angular Resolution EBSD is the tool by which residual elastic strain […]

Grain boundary strain in nickel base alloy

Introduction High sensitivity EBSD, also known as high resolution EBSD is now in general use for the determination of elastic strain and very small rotations1.  Below are shown measured rotations, and normal strains using this technique to investigate grain boundary effects in an annealed sample of nickel based superalloy.     Figure 1 Rotation and […]

Strain measurement using EBSD and Raman

Introduction There are several established techniques that allow the measurement of strain in materials and structures on a macro scale such as X-ray diffraction and neutron diffraction. However, these are of limited value in the understanding of the microscopic, or nanoscale, strain characteristics that may help to improve the design of, or to understand failure […]