fatigue crack tip

ebsd 

In plane rotations near a fatigue crack tip in Ni-based superalloy SRR99.  Crack was grown at elevated temperature (650°C) in the mid-Paris law regime. 
Rotations and strains were measured using cross-correlation based analysis of EBSD patterns like that shown above. 

 

Contact: Angus Wilkinson

High resolution mapping of strains and rotations using electron backscatter diffraction, Wilkinson A. J., Meaden G. and Dingley D. J., Materials Science and Technology (2006) vol.22, 1271-1278, doi:10.1179/174328406X130966
See also: doi:10.1016/j.ultramic.2005.10.001, doi:10.1016/1359-6454(95)00147-9, & BLG Productions Ltd