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Zhurnal Tekhnicheskoi Fiziki, 2021, Volume 91, Issue 4, Pages 600–607
DOI: https://doi.org/10.21883/JTF.2021.04.50622.236-20 (Mi jtf5034) 		 
Solids

Calculation of residual stresses in shaped sapphire single crystals from conoscopic measurement data

S. I. Bakholdin, V. M. Krymov, Yu. G. Nosov

Ioffe Institute, St. Petersburg
Full-text PDF (1430 kB)
DOI: https://doi.org/10.21883/JTF.2021.04.50622.236-20
Abstract: The paper deals with the measurement of residual stresses formed in shaped sapphire single crystals grown from the melt. The algorithm for calculating the normal components of the residual stress tensor from the optical conoscopic measurement data is developed for optically uniaxial crystals in the shape of wafers. Examples of measurement of residual stresses and calculation of the normal components are given for a square rod and a basal-faceted sapphire ribbon. It is shown that normal stresses are mainly concentrated in the periphery of wafers and reach 25 MPa in the rod and 70 MPa in the ribbon.
Keywords: sapphire crystals, residual stresses, separation of stress tensor components.
Received: 28.07.2020
Revised: 19.10.2020
Accepted: 20.10.2020
English version:
Technical Physics, 2021, Volume 66, Issue 4, Pages 535–542
DOI: https://doi.org/10.1134/S1063784221040022
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: S. I. Bakholdin, V. M. Krymov, Yu. G. Nosov, “Calculation of residual stresses in shaped sapphire single crystals from conoscopic measurement data”, Zhurnal Tekhnicheskoi Fiziki, 91:4 (2021), 600–607; Tech. Phys., 66:4 (2021), 535–542
Citation in format AMSBIB
\Bibitem{BakKryNos21}
\by S.~I.~Bakholdin, V.~M.~Krymov, Yu.~G.~Nosov
\paper Calculation of residual stresses in shaped sapphire single crystals from conoscopic measurement data
\jour Zhurnal Tekhnicheskoi Fiziki
\yr 2021
\vol 91
\issue 4
\pages 600--607
\mathnet{http://mi.mathnet.ru/jtf5034}
\crossref{https://doi.org/10.21883/JTF.2021.04.50622.236-20}
\elib{https://elibrary.ru/item.asp?id=46465965}
\transl
\jour Tech. Phys.
\yr 2021
\vol 66
\issue 4
\pages 535--542
\crossref{https://doi.org/10.1134/S1063784221040022}
\scopus{https://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-85124022584}
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