Representative volume elements of strain/stress fields measured by diffraction techniques

Şeren, M.H.; Pagan, D.C.; Noyan, I.C.

doi:10.1107/S1600576723004351

Journal of Applied Crystallography Journal of Applied

Crystallography

IUCr IT WDC

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Figure 15

The variation in grain-averaged strains $[\langle \varepsilon_{33}^{\prime} \rangle_i^{{\rm ph},hkl}]$ with $[\sin^2 \psi]$ for the 200 reflections of (a) W and (c) Cu in the W–Cu composite subjected to a 70°C temperature increase. The dashed lines in these plots connect the average strain values and are included to guide the eye. Solid lines are from linear regression analysis. (b) and (d) Plots of only ψ volume averaged strains $[\langle \varepsilon_{33}^{\prime} \rangle_\psi^{{\rm ph},200}]$ . Solid lines are from linear regression analysis for these average values.