Abstract
We report the first measurement of the direct stress optic coefficient for yttria-partially stabilized zirconia (YTZP) ceramic, using illumination between 260 and 380 GHz with applied stresses up to 27 MPa. YTZP exhibited a linear change in refractive index as a function of stress across the entire applied stress domain. A direct stress optic coefficient was also measured for polytetrafluoroethylene (PTFE). PTFE showed viscoelastic behavior at stress values above 4.5 MPa. These results open the way for quantitative sub-surface stress measurements in structural ceramics and ceramic coating systems at GHz and THz frequencies.
Original language | English |
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Pages (from-to) | 8110-8119 |
Number of pages | 10 |
Journal | Optics Express |
Volume | 24 |
Issue number | 8 |
Early online date | 6 Apr 2016 |
DOIs | |
Publication status | Published - 18 Apr 2016 |
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Research data for "Direct stress optic coefficients for YTZP ceramic and PTFE at GHz frequencies
Schemmel, P. J. (Creator), Diederich, G. (Creator) & Moore, A. J. (Creator), Heriot-Watt University, 30 Jul 2015
DOI: 10.17861/b901a254-495b-43c3-b6d0-e8d53aaddb55
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