A visual and full-field method for detecting quench and normal zone propagation in HTS tapes

doi:10.1088/1361-6668/ac3f9d

	A visual and full-field method for detecting quench and normal zone propagation in HTS tapes
	Wang,Shudan 1; Guan,Mingzhi 1,2; Chen,Jiaxiang 1; Wang,Xingzhe 1; Zhou,Youhe 1
刊名	Superconductor Science and Technology
	2021-12-29
卷号	35 期号:2
关键词	HTS coated tape quench and propagation quench detection method thermoelastic strain-rate DIC full-field technique
ISSN号	0953-2048
DOI	10.1088/1361-6668/ac3f9d
通讯作者	Wang,Xingzhe()
英文摘要	Abstract A fast and effective quench detection method is especially challenging in the development of high-field high-temperature superconducting (HTS) magnets for their safe operations and reliably releasing the stored energy during a quench. The occurrence and propagation of a quench are often accompanied by strong thermal and magneto-mechanical responses within superconducting magnets. Aiming to detect a quench in the whole process and capture the thermoelastic behavior associated with it, a new detection technique with a visual and full-field perception based on the digital image correlation (DIC) method is proposed in the present study. The experiment of a quench triggered thermally by a local spot heater is conducted for a YBCO coated conductor tape in a cryogenic chamber. The evolution and characteristics of the full-field strain in the HTS tape during the processes of a non-quench, a quench occurrence and quench propagation are intuitively presented with experimental observations. For the comparison purpose, the conventional quench detection methods by monitoring temperature and voltage signals during a quench are also utilized experimentally. The results verify the visual and full-field quench detection method, which uses a criterion of thermoelastic strain-rate for the quench occurrence and the evolution of strain contours for the normal zone propagating aspect. Additionally, a numerical quench model of coupled thermoelasticity to simulate the experiment is established and solved with the aid of Comsol multiphysics software. The quantitative results are in good agreement with the experimental measurements to prove the reliability and availability of the developed detection method. Since the DIC method is non-contact and insensitive to intense electromagnetic interferences, it is expected to provide a new technique on quench issues and some basic measurements on strain/stress behaviors in extreme environments of high-field HTS magnets in the future.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:SUST_35_2_025010
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/140456]
专题	中国科学院近代物理研究所
通讯作者	Wang,Xingzhe
作者单位	1.Key Laboratory of Mechanics on Western Disaster and Environment, Ministry of Education, College of Civil Engineering and Mechanics, Key Laboratory of Special Function Materials and Structure Design, Lanzhou University, Lanzhou 730000, People’s Republic of China 2.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China
推荐引用方式 GB/T 7714	Wang,Shudan,Guan,Mingzhi,Chen,Jiaxiang,et al. A visual and full-field method for detecting quench and normal zone propagation in HTS tapes[J]. Superconductor Science and Technology,2021,35(2).
APA	Wang,Shudan,Guan,Mingzhi,Chen,Jiaxiang,Wang,Xingzhe,&Zhou,Youhe.(2021).A visual and full-field method for detecting quench and normal zone propagation in HTS tapes.Superconductor Science and Technology,35(2).
MLA	Wang,Shudan,et al."A visual and full-field method for detecting quench and normal zone propagation in HTS tapes".Superconductor Science and Technology 35.2(2021).