• 대한생식의학회:학술대회논문집
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• 2001.11a
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• pp.113.2-113.2
• /
• 2001

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2006.04a
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• pp.117-118
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• 2006

• Nuclear Engineering and Technology
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• v.24 no.1
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• pp.98-109
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• 1992

In this study uniaxial cyclic loading tests were performed on Cheon-Ho Mt. Limestone specimens to investigate the fatigue failure behavior. The loading rate was kept constantly at 760kg/$\textrm{cm}^2$/sec under cyclic loading. In order to reveal the fatigue behavior for each rock type, the test results were mutually compared with previous studies carried out on Indiana Limes-tone and Seong-Ju Sandstone. Fatigue data is presented in the form of S-N curves, which illustrate the relationship of maximum applied stress(S) to the number of cycles(N) required to produce failure. For the purpose of comparing the S-N curves for each rock type, the test data were formulated up to 10$^4$cycles and the correlation coefficients(R) on Cheon-Ho Mt. Limestone and Seong-Ju Sandstone specimen are 0.886 and 0.983, respectively. All three rock specimens were found to have shorter fatigue life at higher applied stress levels. The fatigue life for each rock type was considered as no less than 81.5, 70 and 74.8%, for Cheon-Ho Mt. Limestone, Indiana Limestone and Seong-Ju Sandstone, respectively. The comparison in static strength for monotonic loaded specimens and specimens which did not fail even after 10$^4$cycles indicated that the increasing rate of strength was about 6.18 and 10.96% , for Cheon-Ho Mt. Limestone and Indiana Limestone, respectively. Poisson's ratio and volumetric strain for Cheon-Ho Mt. Limestone and Seong-ju Sandstone, tended in all the cases to rapidly increase at higher stress levels and with an increase in number of cycles. This increasing trend becomes rapid and obvious just before failure. Also Poisson's ratio and volumetric strain for each stress level were compared and analyzed at the first cycle and the cycle prior to failure.

• The Bulletin of The Korean Astronomical Society
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• v.31 no.1
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• pp.45.1-45.1
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• 2006

• 대한핵의학회:학술대회논문집
• /
• 2002.11a
• /
• pp.31.1-31.1
• /
• 2002

• Proceedings of the Korean Magnestics Society Conference
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• 2009.12a
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• pp.162-162
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• 2009

• The Bulletin of The Korean Astronomical Society
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• v.32 no.1
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• pp.26.1-26.1
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• 2007

• 대한임상약리학회:학술대회논문집
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• 1996.12a
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• pp.35-35
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• 1996

• Communications of Mathematical Education
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• v.2
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• pp.55-85
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• 1997

• Proceedings of the Korean Institute of Surface Engineering Conference
• /
• 2006.04a
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• pp.115-116
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• 2006