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Direct Measurement on the Residual Stress in YBa2Cu3O7-δ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {YBa}_2\hbox {Cu}_3\hbox {O}_{7\text {-}\updelta }$$\end{document} Bulk Superconductors Fabricated by Top-Seed Melt-Textured Method

Direct Measurement on the Residual Stress in YBa2Cu3O7-δ\documentclass[12pt]{minimal}... The residual stress is formed in YBa2Cu3O7-δ\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$\hbox {YBa}_{\mathrm {2}}\hbox {Cu}_{\mathrm {3}}\hbox {O}_{{7\text {-}\updelta }}$$\end{document} (YBCO) bulk superconductors, which undergoes a complex fabrication process and experienced a huge temperature change about 1000∘C\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$1000^{\circ }\,\hbox {C}$$\end{document}. The residual stress may result in micro-cracks in YBCO bulks and cause degradation of its superconducting and mechanical properties. It will be greatly helpful to reform the structural designs if the distribution of residual stress in YBCO bulk can be investigated. The traditional method of measuring residual stress does not apply to oxide ceramics as they are brittle materials. In this paper, a YBCO bulk was sliced into pieces of several millimeters in height, which could thus be treated as a plane-stress problem. The residual stress and principal stress angle for YBCO bulk have been obtained by an artificial hole-drilling method with very low speed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Acta Mechanica Solida Sinica" Springer Journals

Direct Measurement on the Residual Stress in YBa2Cu3O7-δ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {YBa}_2\hbox {Cu}_3\hbox {O}_{7\text {-}\updelta }$$\end{document} Bulk Superconductors Fabricated by Top-Seed Melt-Textured Method

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Publisher
Springer Journals
Copyright
Copyright © The Chinese Society of Theoretical and Applied Mechanics 2020
ISSN
0894-9166
eISSN
1860-2134
DOI
10.1007/s10338-020-00192-x
Publisher site
See Article on Publisher Site

Abstract

The residual stress is formed in YBa2Cu3O7-δ\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$\hbox {YBa}_{\mathrm {2}}\hbox {Cu}_{\mathrm {3}}\hbox {O}_{{7\text {-}\updelta }}$$\end{document} (YBCO) bulk superconductors, which undergoes a complex fabrication process and experienced a huge temperature change about 1000∘C\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$1000^{\circ }\,\hbox {C}$$\end{document}. The residual stress may result in micro-cracks in YBCO bulks and cause degradation of its superconducting and mechanical properties. It will be greatly helpful to reform the structural designs if the distribution of residual stress in YBCO bulk can be investigated. The traditional method of measuring residual stress does not apply to oxide ceramics as they are brittle materials. In this paper, a YBCO bulk was sliced into pieces of several millimeters in height, which could thus be treated as a plane-stress problem. The residual stress and principal stress angle for YBCO bulk have been obtained by an artificial hole-drilling method with very low speed.

Journal

"Acta Mechanica Solida Sinica"Springer Journals

Published: Sep 22, 2020

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