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1-8 of 8
Keywords: toughness
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Proceedings Papers
Assessment of Deep Shale Fracture Toughness Using Nanoindentation Tests
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-169
... , hardness H , fracture toughness K IC and other parameters are commonly obtained from laboratory tests with core plugs and logging data interpretations. However, these methods have their own limitations. In recent years, the nanoindentation test has been widely used to predict mechanical properties...
Proceedings Papers
Influence of Loading Rate on Fracture Toughness of Rock by Semi-Circular Bend (SCB) Test
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Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-027
... Abstract A fracture toughness test under a wide range of the loading rate from 10 –3 to 10 6 mm/min was conducted using Kimachi sandstone in order to investigate the influence of the loading rate on the fracture toughness of the rock. Semi-Circular Bend (SCB) test was adopted to estimate...
Proceedings Papers
Determination of Dynamic Fracture Toughness of Rocks using Straight Notched Disk Bending (SNDB) Specimen
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Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-106
... Abstract Fracture toughness is an indication of the amount of stress required to propagate a preexisting crack and one of the most important properties of any material for many design applications. In this study, fracture toughness test of rocks using straight notched disk bending (SNDB...
Proceedings Papers
Development of an ISRM Suggested Method for Determining Mode I Static Fracture Toughness
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Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-184
...8th Asian Rock Mechanics Symposium ARMS8 14-16 October 2014, Sapporo, Japan ? Development of an ISRM Suggested Method for Determining Mode I Static Fracture Toughness M.D. Kuruppua*, Y. Obarab, M.R. Ayatollahic, K.P. Chongd and T. Funatsue a Curtin University, Kalgoorlie, Australia b Graduate...
Proceedings Papers
Feasibility of Using Semi-Circular Bend Specimen to Develop a Standard Method to Determine Mode I Fracture Toughness of Geomaterials
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Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-044
... Abstract A number of standard methods have been proposed to determine the Mode I fracture toughness of rock. They include those based on short rod specimen, chevron bend specimen and cracked chevon-notched Brazilian disk specimen. The semi-circular bend (SCB) specimen shown in Figure1 has been...
Proceedings Papers
Investigation Of Combined Opening - Sliding Fracture Toughness Behaviour In Some Cracked Rock Samples
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Paper presented at the ISRM International Symposium - 5th Asian Rock Mechanics Symposium, November 24–26, 2008
Paper Number: ISRM-ARMS5-2008-164
... for mixed mode fracture toughness of rocks tested with the BD specimen do not comply with the theoretical curve of MTS criterion. The experimental fracture toughness data are always above the MTS curve. Therefore, a modified form of MTS criterion is employed in this paper for predicting the BD test results...
Proceedings Papers
Fracture Toughness Vs. Tensile Strength For Reservoir Rocks From Saudi Arabia
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Paper presented at the ISRM International Symposium - 2nd Asian Rock Mechanics Symposium, September 11–14, 2001
Paper Number: ISRM-ARMS2-2001-035
... ABSTRACT: The objective of this paper is to present experimental results and to investigate the correlation between tensile strength and mode-l fracture toughness of rocks. Rock specimens were obtained from Saudi Arabia, from both an outcrop and a petroleum reservoir at a depth of about 3.5 km...
Proceedings Papers
A New Theory For Reinforcing Roof By Gridding Bolt Set And Its Applications
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Paper presented at the ISRM International Symposium - 2nd Asian Rock Mechanics Symposium, September 11–14, 2001
Paper Number: ISRM-ARMS2-2001-129
... that the toughness and the anti-fatigue strength of rock mass are enhanced obviously. Based on the above researches, a new theory to reinforce roof by gridding bolt set and a design method are put forward firstly. In the design method, the bolts are fixed into the roof in all the gate ahead the working face...
