Explanation on the Abnormal Behavior during the Nanoindentation Holding Stages by Amplifying Oscillation
Recently, the holding states of nanoindentation experiments have been widely used to analyze the time-dependent deformations of various rocks, and the dynamic mechanical analysis (DMA) method seems to be more applicable than the quasi-static mechanical analysis (QMA) method when the influence of cre...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/8886965 |
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| author | Jiahui Xu Guichen Li Ruiyang Bi Haoyu Rong Changlun Sun |
| author_facet | Jiahui Xu Guichen Li Ruiyang Bi Haoyu Rong Changlun Sun |
| author_sort | Jiahui Xu |
| collection | DOAJ |
| description | Recently, the holding states of nanoindentation experiments have been widely used to analyze the time-dependent deformations of various rocks, and the dynamic mechanical analysis (DMA) method seems to be more applicable than the quasi-static mechanical analysis (QMA) method when the influence of creep deformation on mechanical properties of rocks was analyzed. However, the former method causes an abnormal behavior during the creep holding stages that was not clearly interpreted.2 Consequently, in this study, by amplifying the oscillation of the DMA method, the mechanical mechanism of this phenomenon was explained. Experimental results confirm that the rheological deformation of rocks consists of the creep deformation (depth increasing) and the elastic aftereffect deformation (depth decreasing) during the creep time with small oscillation; once the elastic aftereffect deformation exceeds the creep deformation, the abnormal behavior can be observed. Besides, some other abnormal behaviors might be found for other rock materials when the DMA method with different oscillations is used, which illustrates the complexity and limitation of applying this method. Thus, the QMA method was recommended to investigate the above questions in future studies. |
| format | Article |
| id | doaj-art-b5cf2bbddd8049b39dbe6e8b7d4ad8ea |
| institution | OA Journals |
| issn | 1687-8094 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-b5cf2bbddd8049b39dbe6e8b7d4ad8ea2025-08-20T02:23:23ZengWileyAdvances in Civil Engineering1687-80942022-01-01202210.1155/2022/8886965Explanation on the Abnormal Behavior during the Nanoindentation Holding Stages by Amplifying OscillationJiahui Xu0Guichen Li1Ruiyang Bi2Haoyu Rong3Changlun Sun4School of Mines, Key Laboratory of Deep Coal Resource MiningSchool of Mines, Key Laboratory of Deep Coal Resource MiningSchool of Mines, Key Laboratory of Deep Coal Resource MiningSchool of Mines, Key Laboratory of Deep Coal Resource MiningSchool of Mines, Key Laboratory of Deep Coal Resource MiningRecently, the holding states of nanoindentation experiments have been widely used to analyze the time-dependent deformations of various rocks, and the dynamic mechanical analysis (DMA) method seems to be more applicable than the quasi-static mechanical analysis (QMA) method when the influence of creep deformation on mechanical properties of rocks was analyzed. However, the former method causes an abnormal behavior during the creep holding stages that was not clearly interpreted.2 Consequently, in this study, by amplifying the oscillation of the DMA method, the mechanical mechanism of this phenomenon was explained. Experimental results confirm that the rheological deformation of rocks consists of the creep deformation (depth increasing) and the elastic aftereffect deformation (depth decreasing) during the creep time with small oscillation; once the elastic aftereffect deformation exceeds the creep deformation, the abnormal behavior can be observed. Besides, some other abnormal behaviors might be found for other rock materials when the DMA method with different oscillations is used, which illustrates the complexity and limitation of applying this method. Thus, the QMA method was recommended to investigate the above questions in future studies.http://dx.doi.org/10.1155/2022/8886965 |
| spellingShingle | Jiahui Xu Guichen Li Ruiyang Bi Haoyu Rong Changlun Sun Explanation on the Abnormal Behavior during the Nanoindentation Holding Stages by Amplifying Oscillation Advances in Civil Engineering |
| title | Explanation on the Abnormal Behavior during the Nanoindentation Holding Stages by Amplifying Oscillation |
| title_full | Explanation on the Abnormal Behavior during the Nanoindentation Holding Stages by Amplifying Oscillation |
| title_fullStr | Explanation on the Abnormal Behavior during the Nanoindentation Holding Stages by Amplifying Oscillation |
| title_full_unstemmed | Explanation on the Abnormal Behavior during the Nanoindentation Holding Stages by Amplifying Oscillation |
| title_short | Explanation on the Abnormal Behavior during the Nanoindentation Holding Stages by Amplifying Oscillation |
| title_sort | explanation on the abnormal behavior during the nanoindentation holding stages by amplifying oscillation |
| url | http://dx.doi.org/10.1155/2022/8886965 |
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