New HexMat papers on measuring volumetric texture of polycrystalline materials with ultrasound.

Two papers have recently been published on measuring volumetric texture of polycrystalline materials with ultrasound:

Direct Volumetric Measurement of Crystallographic texture using acoustic waves, Bo Lan, T. Ben Britton, Tea-Sung Jun, Weimin Gan, Michael Hofmann, Fionn P.E. Dunne, Michael J.S. Lowe, Acta Materialia, 2018

DOI: https://doi.org/10.1016/j.actamat.2018.08.037

Graphical abstract:

Powered by a general theoretical platform that links the polycrystal texture with acoustic wave speeds via a simple convolution relationship, rapid non-destructive measurements of volumetric texture are achieved using the conventional water-bath ultrasonic system. The results of seven representative hexagonal and cubic samples are successfully validated against the well-established neutron diffraction technique.

Graphical Abstract:

By introducing a theoretical platform that links polycrystal wave speed with crystallographic texture through a simple convolution relationship, the well-established resonant ultrasound spectroscopy, which measures elastic constants from natural frequencies of the samples, can be easily used for non-destructive evaluation of bulk texture.

Rapid measurement of volumetric texture using resonant ultrasound spectroscop, Bo Lan, Michael.A.Carpenter, Weimin Gan, Michael Hofmann, Fionn P.E.Dunne, Michael J.S.Lowe

DOI: https://doi.org/10.1016/j.scriptamat.2018.07.029