When a crack is detected in a piping line during in-service inspections, failure estimation method provided in ASME Boiler and Pressure Vessel Code Section XI (ASME Code Section XI) or JSME Rules on Fitness-for-Service for Nuclear Power Plants (JSME FFS Code) can be applied to evaluate the structural integrity of the cracked pipe. The failure estimation method in the current codes accounts for the bending moment and axial force due to pressure. The torsion moment is not considered. Recently, analytical investigation was carried out by the authors on the limit load of cracked pipes considering multi-axial loads including torsion. Two failure estimation methods for multi-axial loads including torsion moment with different ranges were proposed. In this study, to investigate the failure behavior of cracked pipes subjected to multi-axial loads including the torsion moment and to provide experimental support for the failure estimation methods, failure experiments were performed on 20 mm diameter stainless steel pipes with a circumferential surface crack or a through-wall crack under combined axial force, bending moment, and torsion moment. Based on the experimental results, the proposed failure estimation methods were confirmed to be applicable to cracked pipes subjected to multi-axial loads.
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February 2017
Research-Article
Experimental Study on Failure Estimation Method for Circumferentially Cracked Pipes Subjected to Multi-Axial Loads
Yinsheng Li,
Yinsheng Li
Japan Atomic Energy Agency (JAEA),
Tokai-mura, Naka-gun,
Ibaraki-ken 319-1195, Japan
e-mail: li.yinsheng@jaea.go.jp
Tokai-mura, Naka-gun,
Ibaraki-ken 319-1195, Japan
e-mail: li.yinsheng@jaea.go.jp
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Kunio Hasegawa,
Kunio Hasegawa
Japan Atomic Energy Agency (JAEA),
Tokai-mura, Naka-gun,
Ibaraki-ken 319-1195, Japan
e-mail: kunioh@kzh.biglobe.ne.jp
Tokai-mura, Naka-gun,
Ibaraki-ken 319-1195, Japan
e-mail: kunioh@kzh.biglobe.ne.jp
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Naoki Miura,
Naoki Miura
Central Research Institute of Electric
Power Industry (CRIEPI),
2-6-1 Nagasaka, Yokosuka,
Kanagawa 240-0196, Japan
e-mail: miura@criepi.denken.or.jp
Power Industry (CRIEPI),
2-6-1 Nagasaka, Yokosuka,
Kanagawa 240-0196, Japan
e-mail: miura@criepi.denken.or.jp
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Katsuaki Hoshino
Katsuaki Hoshino
Electric Power Engineering Systems Co., Ltd.,
2-6-1 Nagasaka, Yokosuka,
Kanagawa 240-0196, Japan
e-mail: hoshinok@dentec.co.jp
2-6-1 Nagasaka, Yokosuka,
Kanagawa 240-0196, Japan
e-mail: hoshinok@dentec.co.jp
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Yinsheng Li
Japan Atomic Energy Agency (JAEA),
Tokai-mura, Naka-gun,
Ibaraki-ken 319-1195, Japan
e-mail: li.yinsheng@jaea.go.jp
Tokai-mura, Naka-gun,
Ibaraki-ken 319-1195, Japan
e-mail: li.yinsheng@jaea.go.jp
Kunio Hasegawa
Japan Atomic Energy Agency (JAEA),
Tokai-mura, Naka-gun,
Ibaraki-ken 319-1195, Japan
e-mail: kunioh@kzh.biglobe.ne.jp
Tokai-mura, Naka-gun,
Ibaraki-ken 319-1195, Japan
e-mail: kunioh@kzh.biglobe.ne.jp
Naoki Miura
Central Research Institute of Electric
Power Industry (CRIEPI),
2-6-1 Nagasaka, Yokosuka,
Kanagawa 240-0196, Japan
e-mail: miura@criepi.denken.or.jp
Power Industry (CRIEPI),
2-6-1 Nagasaka, Yokosuka,
Kanagawa 240-0196, Japan
e-mail: miura@criepi.denken.or.jp
Katsuaki Hoshino
Electric Power Engineering Systems Co., Ltd.,
2-6-1 Nagasaka, Yokosuka,
Kanagawa 240-0196, Japan
e-mail: hoshinok@dentec.co.jp
2-6-1 Nagasaka, Yokosuka,
Kanagawa 240-0196, Japan
e-mail: hoshinok@dentec.co.jp
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received January 14, 2016; final manuscript received April 22, 2016; published online August 5, 2016. Assoc. Editor: David L. Rudland.
J. Pressure Vessel Technol. Feb 2017, 139(1): 011204 (10 pages)
Published Online: August 5, 2016
Article history
Received:
January 14, 2016
Revised:
April 22, 2016
Citation
Li, Y., Hasegawa, K., Miura, N., and Hoshino, K. (August 5, 2016). "Experimental Study on Failure Estimation Method for Circumferentially Cracked Pipes Subjected to Multi-Axial Loads." ASME. J. Pressure Vessel Technol. February 2017; 139(1): 011204. https://doi.org/10.1115/1.4033531
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