Non-contact, non-destructive mapping of thermal diffusivity and surface acoustic wave speed using transient grating spectroscopy
Name
Reza-et-al-2020-Non-contact-non-destructive-mapping-of-thermal-diffusivity-and-surface--.pdf
Description
Published version
Size
10.02 MB
Format
Adobe PDF
Checksum (MD5)
cb1253185a3ba43f60c6e0d8e82819d9
Author(s)
Reza, Abdallah
Dennett, Cody A
Short, Michael P
Waite, John
Zayachuk, Yevhen
Magazzeni, Christopher M
Hills, Simon
Hofmann, Felix
Date Issued
2020
Journal
Review of Scientific Instruments
Publisher
AIP Publishing
Version
Final published version
Abstract
We present new developments of the laser-induced transient grating spectroscopy (TGS) technique that enable the measurement of large area 2D maps of thermal diffusivity and surface acoustic wave speed. Additional capabilities include targeted measurements and the ability to accommodate samples with increased surface roughness. These new capabilities are demonstrated by recording large TGS maps of deuterium implanted tungsten, linear friction welded aerospace alloys, and high entropy alloys with a range of grain sizes. The results illustrate the ability to view the grain microstructure in elastically anisotropic samples and to detect anomalies in samples, for example, due to irradiation and previous measurements. They also point to the possibility of using TGS to quantify grain size at the surface of polycrystalline materials.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1063/5.0003742
