The objective of this study is to investigate the typical failure mode and to obtain the stress range versus number of cycles to failure (S-N) data of MARK-III type liquefied natural gas (LNG) insulation system under the fatigue loading at actual cryogenic environment. A systematic experimental research is carried out for the assessment of the fatigue strength of MARK-III insulation system at cryogenic temperature. Three different types of test specimens are tested for the evaluation of fatigue performance of MARK-III insulation system. Test specimens are determined considering the fatigue vulnerable locations such as mastic area, slit area, and top bridge pad area inside the actual LNG cargo tanks. All test specimens are fabricated as close as possible to the actual yard practice. A series of fatigue test results is represented as S-N curves. Cyclic fatigue loadings were carefully considered similar to the actual sloshing loads. The effect of sloshing impacts is considered by selecting the stress ratio . The load levels have been determined based on the ultimate strength of reinforced polyurethane foam as 12.2 bars. Different cryogenic temperatures are employed according to the test locations in consideration of temperature gradient within the insulation system. All test results including fatigue life, as well as failure locations of MARK-III insulation system at cryogenic temperatures, are reported and compared with those at room temperature. Consistent S-N curves of MARK-III insulation system at both room and cryogenic temperatures are obtained and compared. The slopes of S-N curves from both fatigue test results are observed to be almost identical, and the fatigue strengths are found to exhibit similar trend. The results from this research can be used for the fatigue assessment of the LNGC insulation system, as well as a design guideline of LNG CCS at cryogenic temperature.
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e-mail: kimm@pusan.ac.kr
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November 2011
Materials Technology
Cryogenic Fatigue Strength Assessment for MARK-III Insulation System of LNG Carriers
Myung Hyun Kim,
e-mail: kimm@pusan.ac.kr
Myung Hyun Kim
Pusan National University
, 30 Jangjeon-dong, Geumjeong-gu, Busan, 609-735, Republic of Korea
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Yoon Pyo Kil,
Yoon Pyo Kil
Pusan National University
, 30 Jangjeon-dong, Geumjeong-gu, Busan, 609-735, Republic of Korea
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Jae Myung Lee,
Jae Myung Lee
Pusan National University
, 30 Jangjeon-dong, Geumjeong-gu, Busan, 609-735, Republic of Korea
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Min Sung Chun,
Min Sung Chun
Samsung Heavy Industries, Co., Ltd.
, 530 Jangpyeong-dong, Geoje, Gyeongnam, 656–710, Republic of Korea
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Yong Suk Suh,
Yong Suk Suh
Samsung Heavy Industries, Co., Ltd.
, 530 Jangpyeong-dong, Geoje, Gyeongnam, 656–710, Republic of Korea
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Wha Soo Kim,
Wha Soo Kim
Hyundai Heavy Industries, Co., Ltd.
, 1 Jeonha-dong, Dong-gu, Ulsan, 682–792, Republic of Korea
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Byung Jae Noh,
Byung Jae Noh
Hyundai Heavy Industries, Co., Ltd.
, 1 Jeonha-dong, Dong-gu, Ulsan, 682–792, Republic of Korea
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Jang Ho Yoon,
Jang Ho Yoon
American Bureau of Shipping
, Busan, 600–737, Republic of Korea
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Min Soo Kim,
Min Soo Kim
Lloyd’s Register
, 862-1 Beomchon 1-dong, Busanjin-gu, Busan, 614–724, Republic of Korea
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Hang Sub Urm
Hang Sub Urm
Det Norske Veritas Korea Ltd.
, 36-7 Namchon 1-dong, Suyong-gu, Busan, 613–011, Republic of Korea
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Myung Hyun Kim
Pusan National University
, 30 Jangjeon-dong, Geumjeong-gu, Busan, 609-735, Republic of Koreae-mail: kimm@pusan.ac.kr
Yoon Pyo Kil
Pusan National University
, 30 Jangjeon-dong, Geumjeong-gu, Busan, 609-735, Republic of Korea
Jae Myung Lee
Pusan National University
, 30 Jangjeon-dong, Geumjeong-gu, Busan, 609-735, Republic of Korea
Min Sung Chun
Samsung Heavy Industries, Co., Ltd.
, 530 Jangpyeong-dong, Geoje, Gyeongnam, 656–710, Republic of Korea
Yong Suk Suh
Samsung Heavy Industries, Co., Ltd.
, 530 Jangpyeong-dong, Geoje, Gyeongnam, 656–710, Republic of Korea
Wha Soo Kim
Hyundai Heavy Industries, Co., Ltd.
, 1 Jeonha-dong, Dong-gu, Ulsan, 682–792, Republic of Korea
Byung Jae Noh
Hyundai Heavy Industries, Co., Ltd.
, 1 Jeonha-dong, Dong-gu, Ulsan, 682–792, Republic of Korea
Jang Ho Yoon
American Bureau of Shipping
, Busan, 600–737, Republic of Korea
Min Soo Kim
Lloyd’s Register
, 862-1 Beomchon 1-dong, Busanjin-gu, Busan, 614–724, Republic of Korea
Hang Sub Urm
Det Norske Veritas Korea Ltd.
, 36-7 Namchon 1-dong, Suyong-gu, Busan, 613–011, Republic of KoreaJ. Offshore Mech. Arct. Eng. Nov 2011, 133(4): 041401 (10 pages)
Published Online: April 12, 2011
Article history
Received:
September 18, 2009
Revised:
October 10, 2010
Online:
April 12, 2011
Published:
April 12, 2011
Citation
Kim, M. H., Kil, Y. P., Lee, J. M., Chun, M. S., Suh, Y. S., Kim, W. S., Noh, B. J., Yoon, J. H., Kim, M. S., and Urm, H. S. (April 12, 2011). "Cryogenic Fatigue Strength Assessment for MARK-III Insulation System of LNG Carriers." ASME. J. Offshore Mech. Arct. Eng. November 2011; 133(4): 041401. https://doi.org/10.1115/1.4003389
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