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An Observation on the Experimental Measurement of Dislocation Density

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Abstract

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.

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Authors and Affiliations

  1. Civil & Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA

    Amit Acharya

  2. The Maxwell Institute of Mathematical Sciences and School of Mathematical and Computing Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, Scotland, UK

    Robin J. Knops

Authors
  1. Amit Acharya
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  2. Robin J. Knops
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Correspondence to Amit Acharya.

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Acharya, A., Knops, R.J. An Observation on the Experimental Measurement of Dislocation Density. J Elast 114, 275–279 (2014). https://doi.org/10.1007/s10659-013-9437-2

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  • DOI: https://doi.org/10.1007/s10659-013-9437-2

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