Fracture toughness testing of brittle materials using semi-circular bend (SCB) specimen
The semi-circular bend (SCB) specimen was suggested in 1984 for testing mode I fracture toughness of rock and other geo or brittle materials. Since then SCB has been used worldwide, extended and improved for many other applications by various researchers. Formulations for mode I and mixed mode fract...
| Main Authors: | , |
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| Format: | Journal Article |
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Elsevier
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/24498 |
| _version_ | 1848751447229857792 |
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| author | Kuruppu, Mahinda Chong, K. |
| author_facet | Kuruppu, Mahinda Chong, K. |
| author_sort | Kuruppu, Mahinda |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The semi-circular bend (SCB) specimen was suggested in 1984 for testing mode I fracture toughness of rock and other geo or brittle materials. Since then SCB has been used worldwide, extended and improved for many other applications by various researchers. Formulations for mode I and mixed mode fracture of this specimen proposed by a number of researchers are presented. Methods to determine fracture toughness using both straight notched and chevron-notched specimens have been proposed although the general consensus is that a specimen having a sharp straight notch should yield accurate fracture toughness. Other applications of SCB specimen include testing of rock subjected to in situ conditions such as elevated temperature, confining pressure and pore water pressure. Furthermore it has been proven that it is a suitable specimen to test fracture toughness of rock at very high strain rates. Areas requiring further research to improve the accuracy of formulations are identified. |
| first_indexed | 2025-11-14T07:52:52Z |
| format | Journal Article |
| id | curtin-20.500.11937-24498 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:52:52Z |
| publishDate | 2012 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-244982017-09-13T15:09:37Z Fracture toughness testing of brittle materials using semi-circular bend (SCB) specimen Kuruppu, Mahinda Chong, K. Fracture mechanics Finite element analysis Brittle fracture Stress intensity factor Toughness testing Dynamic fracture J-integral Mixed mode fracture The semi-circular bend (SCB) specimen was suggested in 1984 for testing mode I fracture toughness of rock and other geo or brittle materials. Since then SCB has been used worldwide, extended and improved for many other applications by various researchers. Formulations for mode I and mixed mode fracture of this specimen proposed by a number of researchers are presented. Methods to determine fracture toughness using both straight notched and chevron-notched specimens have been proposed although the general consensus is that a specimen having a sharp straight notch should yield accurate fracture toughness. Other applications of SCB specimen include testing of rock subjected to in situ conditions such as elevated temperature, confining pressure and pore water pressure. Furthermore it has been proven that it is a suitable specimen to test fracture toughness of rock at very high strain rates. Areas requiring further research to improve the accuracy of formulations are identified. 2012 Journal Article http://hdl.handle.net/20.500.11937/24498 10.1016/j.engfracmech.2012.01.013 Elsevier restricted |
| spellingShingle | Fracture mechanics Finite element analysis Brittle fracture Stress intensity factor Toughness testing Dynamic fracture J-integral Mixed mode fracture Kuruppu, Mahinda Chong, K. Fracture toughness testing of brittle materials using semi-circular bend (SCB) specimen |
| title | Fracture toughness testing of brittle materials using semi-circular bend (SCB) specimen |
| title_full | Fracture toughness testing of brittle materials using semi-circular bend (SCB) specimen |
| title_fullStr | Fracture toughness testing of brittle materials using semi-circular bend (SCB) specimen |
| title_full_unstemmed | Fracture toughness testing of brittle materials using semi-circular bend (SCB) specimen |
| title_short | Fracture toughness testing of brittle materials using semi-circular bend (SCB) specimen |
| title_sort | fracture toughness testing of brittle materials using semi-circular bend (scb) specimen |
| topic | Fracture mechanics Finite element analysis Brittle fracture Stress intensity factor Toughness testing Dynamic fracture J-integral Mixed mode fracture |
| url | http://hdl.handle.net/20.500.11937/24498 |