Experimental Investigation on Multiscale Fracturing in Thermally Treated Sandstone under SHPB Impact Loading
To study the effect of temperature on the dynamic mechanical behaviors and fracture characteristics of thermally treated sandstone, compressive dynamic loading experiments were performed on a series of samples using a split Hopkinson pressure bar (SHPB). In the tests, the dynamic uniaxial compressiv...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/3211674 |
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| _version_ | 1832566994936791040 |
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| author | Shang Yang Jun Wang Zhi Zhang Jianguo Ning Guoqing Sun |
| author_facet | Shang Yang Jun Wang Zhi Zhang Jianguo Ning Guoqing Sun |
| author_sort | Shang Yang |
| collection | DOAJ |
| description | To study the effect of temperature on the dynamic mechanical behaviors and fracture characteristics of thermally treated sandstone, compressive dynamic loading experiments were performed on a series of samples using a split Hopkinson pressure bar (SHPB). In the tests, the dynamic uniaxial compressive strength of the thermally treated sandstone was inversely proportional to the temperature treatment in the range of 200°C–1000°C, while the dynamic elastic modulus first increased and then gradually decreased after different temperature treatments. The results show that two classical mechanical types (i.e., Class I and Class II) are observed from the dynamic stress-strain responses of SHPB tests for thermally treated sandstone. By means of scanning electron microscopy (SEM), the microdifference of postloading microfracture characteristics in Class I and Class II behavior was identified. In Class I behavior, intercrystalline cracks (IE) are the chief form of cracks on the fracture surface of a specimen fractured by SHPB loading even though there some intracrystalline cracks may also be present. In contrast, Class II behavior results from the chief cracking type being intracrystalline cracks. |
| format | Article |
| id | doaj-art-d5497bb86ef6417bbc18799fcb34a424 |
| institution | Kabale University |
| issn | 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-d5497bb86ef6417bbc18799fcb34a4242025-02-03T01:02:37ZengWileyShock and Vibration1875-92032021-01-01202110.1155/2021/3211674Experimental Investigation on Multiscale Fracturing in Thermally Treated Sandstone under SHPB Impact LoadingShang Yang0Jun Wang1Zhi Zhang2Jianguo Ning3Guoqing Sun4College of Energy and Mining EngineeringCollege of Energy and Mining EngineeringCollege of Energy and Mining EngineeringCollege of Energy and Mining EngineeringCollege of Energy and Mining EngineeringTo study the effect of temperature on the dynamic mechanical behaviors and fracture characteristics of thermally treated sandstone, compressive dynamic loading experiments were performed on a series of samples using a split Hopkinson pressure bar (SHPB). In the tests, the dynamic uniaxial compressive strength of the thermally treated sandstone was inversely proportional to the temperature treatment in the range of 200°C–1000°C, while the dynamic elastic modulus first increased and then gradually decreased after different temperature treatments. The results show that two classical mechanical types (i.e., Class I and Class II) are observed from the dynamic stress-strain responses of SHPB tests for thermally treated sandstone. By means of scanning electron microscopy (SEM), the microdifference of postloading microfracture characteristics in Class I and Class II behavior was identified. In Class I behavior, intercrystalline cracks (IE) are the chief form of cracks on the fracture surface of a specimen fractured by SHPB loading even though there some intracrystalline cracks may also be present. In contrast, Class II behavior results from the chief cracking type being intracrystalline cracks.http://dx.doi.org/10.1155/2021/3211674 |
| spellingShingle | Shang Yang Jun Wang Zhi Zhang Jianguo Ning Guoqing Sun Experimental Investigation on Multiscale Fracturing in Thermally Treated Sandstone under SHPB Impact Loading Shock and Vibration |
| title | Experimental Investigation on Multiscale Fracturing in Thermally Treated Sandstone under SHPB Impact Loading |
| title_full | Experimental Investigation on Multiscale Fracturing in Thermally Treated Sandstone under SHPB Impact Loading |
| title_fullStr | Experimental Investigation on Multiscale Fracturing in Thermally Treated Sandstone under SHPB Impact Loading |
| title_full_unstemmed | Experimental Investigation on Multiscale Fracturing in Thermally Treated Sandstone under SHPB Impact Loading |
| title_short | Experimental Investigation on Multiscale Fracturing in Thermally Treated Sandstone under SHPB Impact Loading |
| title_sort | experimental investigation on multiscale fracturing in thermally treated sandstone under shpb impact loading |
| url | http://dx.doi.org/10.1155/2021/3211674 |
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