https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47688 Wed 25 Jan 2023 08:29:15 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46026 Wed 09 Nov 2022 11:54:15 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:53938  the intermediate principal stress σ2 > the minimum principal stress σ3 = 0), the biaxial compressive strength of granite presents a monotonous increasing trend with the σ2 increasing from 0 to 40 MPa, while the increasing rate of biaxial compressive strength increases firstly and then decreases with the increase in σ2. The rock failure induced by point/local fatigue loads with 5 kHz frequency was analyzed in this study. It shows that the fatigue life of granite is much shorter than that in the traditional full-section fatigue tests, which increases with the increase in σ2 and decreases as the upper level of the fatigue stress or predefined stress of σ1 increase. From the acoustic emission properties, the failure of rocks under biaxial confinements induced by point/local static or fatigue loads are mainly because of tensile cracks. Meanwhile, the application of a disturbance bar with a smaller cross-sectional area induces rock broken more quickly. It seems that the following measures can be used to improve rock breakage efficiency: increasing the predefined stress in the breaking direction, reducing the lateral confinement, using the breaking bar with a small cross-sectional area, and changing the static loading into the dynamic loading of the breaking force.]]> Mon 22 Jan 2024 16:48:53 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32484 Fri 08 Jun 2018 12:07:30 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49127 Fri 05 May 2023 11:53:01 AEST ]]>