An Observation on the Experimental Measurement of Dislocation Density

2013-02-22T00:00:00Z (GMT) by Amit Acharya Robin J. Knops

The common practice of ignoring the elastic strain gradient in measurements of geometrically necessary dislocation (GND) density is critically examined. It is concluded that the practice may result in substantial errors. Our analysis points to the importance of spatial variations of the elastic strain field in relation to its magnitude in inferring estimates of dislocation density from measurements.