A Fast Method to Determine the Critical Depth of Cut for Various Rock Types
Knowing correct values of the rock mechanical properties is crucial for many engineering applications in subsurface. Rocks may show two failure modes during cutting: ductile and brittle. In the ductile mode, rock deforms plastically, and the debris is powdered ahead of the cutting face. On the other...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-08-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/17/4496 |
| _version_ | 1797554995078365184 |
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| author | Salih Koc Arash Dahi Taleghani |
| author_facet | Salih Koc Arash Dahi Taleghani |
| author_sort | Salih Koc |
| collection | DOAJ |
| description | Knowing correct values of the rock mechanical properties is crucial for many engineering applications in subsurface. Rocks may show two failure modes during cutting: ductile and brittle. In the ductile mode, rock deforms plastically, and the debris is powdered ahead of the cutting face. On the other hand, chips are the major cutting characteristics for the brittle failure during rock cutting. The critical depth of cut represents the transition point between these two models, so knowing this value helps better predict the failure mechanism of rock. In this paper, a new method is introduced based on measuring the roughness of the groove for determining the transition point of failure modes for every rock sample after the scratch test. The graph depicting the average change in the surface roughness (<inline-formula><math display="inline"><semantics><mrow><msub><mi>R</mi><mi>t</mi></msub></mrow></semantics></math></inline-formula>) versus the scratched surface roughness (<inline-formula><math display="inline"><semantics><mrow><mi mathvariant="sans-serif">Δ</mi><mi>R</mi></mrow></semantics></math></inline-formula>) can be used to identify the rock failure mode and determine the transition point for the cutting process. The value of this slope increases until the depth of cut reaches the transition point, and then the slope reaches a constant value. The main purpose of this paper is to estimate the critical depth of cut of different rock specimens employing the new surface roughness model. |
| first_indexed | 2024-03-10T16:39:57Z |
| format | Article |
| id | doaj.art-96e714f677a7448fba8ba730585b210f |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T16:39:57Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-96e714f677a7448fba8ba730585b210f2023-11-20T12:05:18ZengMDPI AGEnergies1996-10732020-08-011317449610.3390/en13174496A Fast Method to Determine the Critical Depth of Cut for Various Rock TypesSalih Koc0Arash Dahi Taleghani1Department of Energy and Mineral Engineering, Pennsylvania State University, State College, PA 16801, USADepartment of Energy and Mineral Engineering, Pennsylvania State University, State College, PA 16801, USAKnowing correct values of the rock mechanical properties is crucial for many engineering applications in subsurface. Rocks may show two failure modes during cutting: ductile and brittle. In the ductile mode, rock deforms plastically, and the debris is powdered ahead of the cutting face. On the other hand, chips are the major cutting characteristics for the brittle failure during rock cutting. The critical depth of cut represents the transition point between these two models, so knowing this value helps better predict the failure mechanism of rock. In this paper, a new method is introduced based on measuring the roughness of the groove for determining the transition point of failure modes for every rock sample after the scratch test. The graph depicting the average change in the surface roughness (<inline-formula><math display="inline"><semantics><mrow><msub><mi>R</mi><mi>t</mi></msub></mrow></semantics></math></inline-formula>) versus the scratched surface roughness (<inline-formula><math display="inline"><semantics><mrow><mi mathvariant="sans-serif">Δ</mi><mi>R</mi></mrow></semantics></math></inline-formula>) can be used to identify the rock failure mode and determine the transition point for the cutting process. The value of this slope increases until the depth of cut reaches the transition point, and then the slope reaches a constant value. The main purpose of this paper is to estimate the critical depth of cut of different rock specimens employing the new surface roughness model.https://www.mdpi.com/1996-1073/13/17/4496critical depth of cutrock cuttingductile and brittle modessurface roughnessscratched test |
| spellingShingle | Salih Koc Arash Dahi Taleghani A Fast Method to Determine the Critical Depth of Cut for Various Rock Types Energies critical depth of cut rock cutting ductile and brittle modes surface roughness scratched test |
| title | A Fast Method to Determine the Critical Depth of Cut for Various Rock Types |
| title_full | A Fast Method to Determine the Critical Depth of Cut for Various Rock Types |
| title_fullStr | A Fast Method to Determine the Critical Depth of Cut for Various Rock Types |
| title_full_unstemmed | A Fast Method to Determine the Critical Depth of Cut for Various Rock Types |
| title_short | A Fast Method to Determine the Critical Depth of Cut for Various Rock Types |
| title_sort | fast method to determine the critical depth of cut for various rock types |
| topic | critical depth of cut rock cutting ductile and brittle modes surface roughness scratched test |
| url | https://www.mdpi.com/1996-1073/13/17/4496 |
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