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This work aims at developing a thermal wave imaging method for testing the insulation layer of superconducting busbar in thermonuclear experimental reactor. In the paper, a film bag filled with hot water is used to heat the sample surface. The approximate theoretical model of transient heat conduction under an instantaneous cylindrical surface source in cylindrical structure is given. Through simulation and analysis of the theoretical model, it is found that differential processing of the thermal cooling signals can improve the signal contrast between defects and non-defects areas. Compared with the flash pulse excitation method, the contact excitation method can detect deep defects.
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Keywords:
- thermonuclear experimental reactor /
- busbar insulation layer /
- contact heat excitation /
- thermal wave imaging
[1] Zhang Y B, Song Y T, Wu S T, Wang J Q 2005 Cryogenics & Superconductivity. 33 14 (in Chinese) [张远斌, 宋云涛, 武松涛, 王建青 2005 低温与超导 33 14]
[2] Wang Z B, Song Y T, Wang Z W, Li C C, Jin X 2010 Nucl. Fusion & Plasma Phys. 30 152 (in Chinese) [王志滨, 宋云涛, 王忠伟, 李长春, 戢翔 2010 核聚变与等离子体物理 30 152]
[3] Guan W Y, Liu T H, Zheng G G 1965 Acta Phys. Sin. 21 1345 (in Chinese) [管惟炎, 刘体汉, 郑国光 1965 21 1345]
[4] Seki Y, Ezato K, Suzuki S, Yokoyama K, Enoeda M, Mori S 2010 Fusion Eng. Des. 85 1451
[5] Reichle R, Brichard B, Escourbiac F 2007 J. Nucl. Mater. 363 1466
[6] Durocher A, Vignal N, Escourbiac F, Farjon J L, Schlosser J F 2005 Fusion Eng. Des. 75--79 401
[7] Lotta F, Netchaieff A, Escourbiac F 2010 Fusion Eng. and Des. 85 146
[8] Gauthier E, Roche H, Thomas E 2007 Fusion Eng. Des. 82 1335
[9] Favro L D, Kuo P K, Thomas R L 1994 QNDE 13A 395
[10] Favro L D, Han X Y, Ouyang Z 2001 Int. J. Fatigue 23 471
[11] Zeng S Q, Xu H F, Li J Y, Liu X D 1997 Acta Phys. Sin. 46 1338 (in Chinese) [曾绍群, 徐海峰, 李骄阳, 刘贤德 1997 46 1338]
[12] Zhang H J 1992 Heat Conduction (Beijing: Higher Education Press) p15 (in Chinese) [张洪济 1992 热传导(北京:高等教育出版社)第15页]
[13] Chen L, Cheng Y M 2008 Acta Phys. Sin. 57 6047 (in Chinese) [陈丽, 程玉民 2008 57 6047]
[14] Schneider p J 1955 Conduction of Heat Transfer (Reading, Mass.: Addison-Wesley Publishing Company) p5--7
[15] Carslaw H S, Jaeger J C 1959 CConduction of Heat in Solids (New York: Oxford University Press) p259
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[1] Zhang Y B, Song Y T, Wu S T, Wang J Q 2005 Cryogenics & Superconductivity. 33 14 (in Chinese) [张远斌, 宋云涛, 武松涛, 王建青 2005 低温与超导 33 14]
[2] Wang Z B, Song Y T, Wang Z W, Li C C, Jin X 2010 Nucl. Fusion & Plasma Phys. 30 152 (in Chinese) [王志滨, 宋云涛, 王忠伟, 李长春, 戢翔 2010 核聚变与等离子体物理 30 152]
[3] Guan W Y, Liu T H, Zheng G G 1965 Acta Phys. Sin. 21 1345 (in Chinese) [管惟炎, 刘体汉, 郑国光 1965 21 1345]
[4] Seki Y, Ezato K, Suzuki S, Yokoyama K, Enoeda M, Mori S 2010 Fusion Eng. Des. 85 1451
[5] Reichle R, Brichard B, Escourbiac F 2007 J. Nucl. Mater. 363 1466
[6] Durocher A, Vignal N, Escourbiac F, Farjon J L, Schlosser J F 2005 Fusion Eng. Des. 75--79 401
[7] Lotta F, Netchaieff A, Escourbiac F 2010 Fusion Eng. and Des. 85 146
[8] Gauthier E, Roche H, Thomas E 2007 Fusion Eng. Des. 82 1335
[9] Favro L D, Kuo P K, Thomas R L 1994 QNDE 13A 395
[10] Favro L D, Han X Y, Ouyang Z 2001 Int. J. Fatigue 23 471
[11] Zeng S Q, Xu H F, Li J Y, Liu X D 1997 Acta Phys. Sin. 46 1338 (in Chinese) [曾绍群, 徐海峰, 李骄阳, 刘贤德 1997 46 1338]
[12] Zhang H J 1992 Heat Conduction (Beijing: Higher Education Press) p15 (in Chinese) [张洪济 1992 热传导(北京:高等教育出版社)第15页]
[13] Chen L, Cheng Y M 2008 Acta Phys. Sin. 57 6047 (in Chinese) [陈丽, 程玉民 2008 57 6047]
[14] Schneider p J 1955 Conduction of Heat Transfer (Reading, Mass.: Addison-Wesley Publishing Company) p5--7
[15] Carslaw H S, Jaeger J C 1959 CConduction of Heat in Solids (New York: Oxford University Press) p259
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