| In-field electro-magnetic-force characteristics of high-temperature superconducting films containing cracks | |
| Yan, Liang1; Zhou, Wenhai1,2; Hou, Jiabao1; Wang, Bin1; Jia, Rongli1; Liang, Rui1 | |
| 2023-12-15 | |
| Online publication date | 2023-12 |
| Source Publication | PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS Impact Factor & Quartile Of Published Year The Latest Impact Factor & Quartile |
| ISSN | 0921-4534 |
| EISSN | 1873-2143 |
| Volume | 615 |
| page numbers | 12 |
| Abstract | Superconducting materials have so far been applied in the fields of superconducting motors, flux pumps and nuclear magnetic resonance, but they are prone to mechanical damage due to their material properties. In this paper, the influences of different crack types (including position, angle, size, quantity and spacing) on the characteristics of current-carrying and excited superconducting thin films are analyzed by numerical simulations, as well as their electromagnetic and mechanical characteristics. Several novel and important conclusions are found. In both states, the boundary crack presents the largest current density concentration, while the central crack produces the largest stress concentration. With the increase of crack spacing, the current density on the multi-crack film decreases and eventually tends to be stable. In the current-carrying state, compared with 3 mm cracked film, the current density of 1 mm cracked film is reduced by up to 62.5 %. The von Mises stress of high -temperature superconducting film with 0.1 mm single-spacing cracks is 22.5 % higher than that for 0.3 mm double-spacing cracks, which indicates that close spacing and a high number of crack types are most detrimental to the mechanical properties of high-temperature superconducting films. In the excited state, when the crack angle theta is 90 degrees, the current density streamlines cannot be segmented effectively, which results in the current distribution trend closer to the defect-free film. A large amount of induced current flows into the low-flux region at the 3 mm crack, leading to an increased risk of film quench. The films with 1 mm single-spacing and double-spacing cracks form a low-flux region between the cracks, which makes the magnetic field more difficult to penetrate. |
| Keyword | Crack Superconducting film Electromagnetic field distribution External field environment Stress |
| Publisher | ELSEVIER |
| DOI | 10.1016/j.physc.2023.1354378 |
| Indexed By | SCIE |
| Language | 英语 |
| WOS Research Area | Physics |
| WOS Subject | Physics, Applied ; Physics, Condensed Matter |
| WOS ID | WOS:001135220600001 |
| Original Document Type | Article |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.lzu.edu.cn/handle/262010/582607 |
| Collection | 土木工程与力学学院 |
| Affiliation | 1.Lanzhou Univ Technol, Sch Petrochem Technol, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ, Coll Civil Engn & Mech, Key Lab Mech Environm & Disaster Western China, Minist Educ, Lanzhou 730000, Peoples R China |
| First Author Affilication | Lanzhou University |
| First Signature Affilication | Lanzhou University |
| Recommended Citation GB/T 7714 | Yan, Liang,Zhou, Wenhai,Hou, Jiabao,et al. In-field electro-magnetic-force characteristics of high-temperature superconducting films containing cracks[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,2023,615. |
| APA | Yan, Liang,Zhou, Wenhai,Hou, Jiabao,Wang, Bin,Jia, Rongli,&Liang, Rui.(2023).In-field electro-magnetic-force characteristics of high-temperature superconducting films containing cracks.PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,615. |
| MLA | Yan, Liang,et al."In-field electro-magnetic-force characteristics of high-temperature superconducting films containing cracks".PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 615(2023). |
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