Experimental Study on the Effect of Offset Notch on Fracture Properties of Rock under Three-Point Bending Beam
To investigate the effects of offset notch on the fracture properties of rock beam under bending load, granite beam specimens with “one single offset notch” and “central and offset double notches” are made. A series of three-point bending beam tests on the specimens are carried out by controlling th...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/2781928 |
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| author | Qifeng Guo Xinghui Wu Meifeng Cai Shengjun Miao |
| author_facet | Qifeng Guo Xinghui Wu Meifeng Cai Shengjun Miao |
| author_sort | Qifeng Guo |
| collection | DOAJ |
| description | To investigate the effects of offset notch on the fracture properties of rock beam under bending load, granite beam specimens with “one single offset notch” and “central and offset double notches” are made. A series of three-point bending beam tests on the specimens are carried out by controlling the displacement rate of central notch. The whole load-displacement (P-CMOD) curves are obtained. Experimental results show that the larger the distance between the offset notch and beam central is, the larger are the peak load and nominal strength of the specimen. The peak load and nominal strength for the “central and offset double notches” specimens are both larger than those for the “single central notch” specimen. A fracture model considering the effect of offset notch is developed, and the relationship between the offset notch parameter, tensile strength, and fracture toughness is established. |
| format | Article |
| id | doaj-art-a11472e5fdf0473ba028a3bb2064a1d7 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-a11472e5fdf0473ba028a3bb2064a1d72025-02-03T05:53:11ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422020-01-01202010.1155/2020/27819282781928Experimental Study on the Effect of Offset Notch on Fracture Properties of Rock under Three-Point Bending BeamQifeng Guo0Xinghui Wu1Meifeng Cai2Shengjun Miao3School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaTo investigate the effects of offset notch on the fracture properties of rock beam under bending load, granite beam specimens with “one single offset notch” and “central and offset double notches” are made. A series of three-point bending beam tests on the specimens are carried out by controlling the displacement rate of central notch. The whole load-displacement (P-CMOD) curves are obtained. Experimental results show that the larger the distance between the offset notch and beam central is, the larger are the peak load and nominal strength of the specimen. The peak load and nominal strength for the “central and offset double notches” specimens are both larger than those for the “single central notch” specimen. A fracture model considering the effect of offset notch is developed, and the relationship between the offset notch parameter, tensile strength, and fracture toughness is established.http://dx.doi.org/10.1155/2020/2781928 |
| spellingShingle | Qifeng Guo Xinghui Wu Meifeng Cai Shengjun Miao Experimental Study on the Effect of Offset Notch on Fracture Properties of Rock under Three-Point Bending Beam Advances in Materials Science and Engineering |
| title | Experimental Study on the Effect of Offset Notch on Fracture Properties of Rock under Three-Point Bending Beam |
| title_full | Experimental Study on the Effect of Offset Notch on Fracture Properties of Rock under Three-Point Bending Beam |
| title_fullStr | Experimental Study on the Effect of Offset Notch on Fracture Properties of Rock under Three-Point Bending Beam |
| title_full_unstemmed | Experimental Study on the Effect of Offset Notch on Fracture Properties of Rock under Three-Point Bending Beam |
| title_short | Experimental Study on the Effect of Offset Notch on Fracture Properties of Rock under Three-Point Bending Beam |
| title_sort | experimental study on the effect of offset notch on fracture properties of rock under three point bending beam |
| url | http://dx.doi.org/10.1155/2020/2781928 |
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