| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
|
|
|
|
Interaction of Two Parallel Cracks in REBCO Bulk Superconductors under Applied Magnetic Field |
| Zhao-Xia Zhang1, Feng Xue2, Xiao-Fan Gou2** |
1Faculty of Civil Engineering & Mechanics, Jiangsu University, Zhenjiang 212013
2College of Mechanics and Materials, Hohai University, Nanjing 210098
|
|
| Cite this article: |
|
Zhao-Xia Zhang, Feng Xue, Xiao-Fan Gou 2016 Chin. Phys. Lett. 33 077401 |
|
|
|
|
Abstract Interactions of two collinear and parallel $a/b$-plane cracks in REBCO (where RE is a rare-earth element and usually Y is adopted) bulk superconductors under the Lorentz force resulted from the applied magnetic field are studied. By using the derived boundary integral equation for the crack problem of a cylindrical bulk superconductor under the applied magnetic field, we comprehensively investigate the stress intensity factor (SIF) of modes I and II at the crack tips of the two collinear and parallel cracks with their sizes, relative positions and the applied magnetic field. The calculated results show that in most cases, the SIF of mode I is found to be about tens of times of the one of mode II, and all the SIFs are always proportional to increase in the applied magnetic field, and the cracks near the center are more dangerous due to the larger Lorentz force.
|
|
|
Received: 09 December 2015
Published: 01 August 2016
|
|
| PACS: |
74.72.-h
|
(Cuprate superconductors)
|
| |
74.25.Ld
|
(Mechanical and acoustical properties, elasticity, and ultrasonic Attenuation)
|
| |
62.20.mt
|
(Cracks)
|
|
|
|
|
|
| [1] | Tomita M and Murakami M 2003 Nature 421 517 | | [2] | Zhang Z Y, Matsumoto S, Teranishi R and Kiyoshi T 2012 Supercond. Sci. Technol. 25 115012 | | [3] | Salama K, Selvamanickam V, Gao L and Sun K 1989 Appl. Phys. Lett. 54 2352 | | [4] | Gruss S, Fuchs G, Krabbes G, Verges P, St?ver G, Müller K H, Fink J and Schultz L 2001 Appl. Phys. Lett. 79 3131 | | [5] | Diko P 2004 Supercond. Sci. Technol. 17 R45 | | [6] | Tom H J 2000 Supercond. Sci. Technol. 13 R121 | | [7] | Gou X F, Zheng X J and Zhou Y H 2007 IEEE Trans. Appl. Supercond. 17 3795 | | [8] | Diko P 1998 Supercond. Sci. Technol. 11 68 | | [9] | Yong H D, Zhou Y H and Zeng J 2008 J. Appl. Phys. 104 113902 | | [10] | Zeng J, Zhou Y H and Yong H D 2010 J. Appl. Phys. 108 033901 | | [11] | Gao Z W, Zhou Y H and Lee K Y 2010 Physica C 470 654 | | [12] | Zhang Z X, Chen W and Gou X F 2015 AIP Conf. Proc. 1648 490012 | | [13] | Krabbes G, Fuchs G, Canders W R, May H and Palka R 2006 High Temperature Superconductor Bulk Materials: Fundamentals, Processing (New Jersey: John Wiley & Sons Inc.) | | [14] | Bean C P 1962 Phys. Rev. Lett. 8 250 | | [15] | Xu Z 2006 Elasticity (Beijing: Higher education press) | | [16] | Wang Y B and Chau K T 1997 Int. J. Fract. 87 1 | | [17] | Chau K T and Wang Y B 1999 Int. J. Solids Struct. 36 2041 | | [18] | Zhang Z X, Wang Y B and Yang S H 2004 J. Lanzhou University 40 16 (in Chinese) | | [19] | Qiu X G 2011 High-Temperature Superconductors (Cambridge: Woodhead Publishing) p 164 |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
