Mechanical Properties of Minerals in Daejeon Granite According to Depths by Dynamic Ultra-micro Hardness
The hardness and mechanical properties of the minerals in the Daejeon granite according to depths were investigated by indentation test, load-unload test, and cycle test of dynamic ultra-micro hardness. As a result of the tests, it was possible to classify into three mineral groups (Group-1, -2, -3)...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
Korean Society for Rock Mechanics
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/54347 |
| _version_ | 1848759349166473216 |
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| author | Choi, J. Shin, J. Jang, Hyong Doo Kang, S. |
| author_facet | Choi, J. Shin, J. Jang, Hyong Doo Kang, S. |
| author_sort | Choi, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The hardness and mechanical properties of the minerals in the Daejeon granite according to depths were investigated by indentation test, load-unload test, and cycle test of dynamic ultra-micro hardness. As a result of the tests, it was possible to classify into three mineral groups (Group-1, -2, -3). The Martens hardness was not significantly different between 41 m and 223 m depths in three mode tests. Nevertheless, they showed in the order of a cycle test < load-unload test < indentation test. Considering the average Martens hardness, elastic modulus, and indentation work for each mineral group, their boundaries were relatively clear. In conclusion, A relatively accurate hardness of minerals can be obtained by three mode tests of dynamic ultra-micro hardness. In addtion, it was possible to characterize the elastic modulus and the elastic-plastic properties of the minerals from the load-unload and cycle tests. |
| first_indexed | 2025-11-14T09:58:28Z |
| format | Journal Article |
| id | curtin-20.500.11937-54347 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:58:28Z |
| publishDate | 2017 |
| publisher | Korean Society for Rock Mechanics |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-543472020-06-02T00:22:31Z Mechanical Properties of Minerals in Daejeon Granite According to Depths by Dynamic Ultra-micro Hardness Choi, J. Shin, J. Jang, Hyong Doo Kang, S. The hardness and mechanical properties of the minerals in the Daejeon granite according to depths were investigated by indentation test, load-unload test, and cycle test of dynamic ultra-micro hardness. As a result of the tests, it was possible to classify into three mineral groups (Group-1, -2, -3). The Martens hardness was not significantly different between 41 m and 223 m depths in three mode tests. Nevertheless, they showed in the order of a cycle test < load-unload test < indentation test. Considering the average Martens hardness, elastic modulus, and indentation work for each mineral group, their boundaries were relatively clear. In conclusion, A relatively accurate hardness of minerals can be obtained by three mode tests of dynamic ultra-micro hardness. In addtion, it was possible to characterize the elastic modulus and the elastic-plastic properties of the minerals from the load-unload and cycle tests. 2017 Journal Article http://hdl.handle.net/20.500.11937/54347 10.7474/TUS.2017.27.3.172 Korean Society for Rock Mechanics restricted |
| spellingShingle | Choi, J. Shin, J. Jang, Hyong Doo Kang, S. Mechanical Properties of Minerals in Daejeon Granite According to Depths by Dynamic Ultra-micro Hardness |
| title | Mechanical Properties of Minerals in Daejeon Granite According to Depths by Dynamic Ultra-micro Hardness |
| title_full | Mechanical Properties of Minerals in Daejeon Granite According to Depths by Dynamic Ultra-micro Hardness |
| title_fullStr | Mechanical Properties of Minerals in Daejeon Granite According to Depths by Dynamic Ultra-micro Hardness |
| title_full_unstemmed | Mechanical Properties of Minerals in Daejeon Granite According to Depths by Dynamic Ultra-micro Hardness |
| title_short | Mechanical Properties of Minerals in Daejeon Granite According to Depths by Dynamic Ultra-micro Hardness |
| title_sort | mechanical properties of minerals in daejeon granite according to depths by dynamic ultra-micro hardness |
| url | http://hdl.handle.net/20.500.11937/54347 |