An Experimental Investigation of Moisture-Induced Softening Mechanism of Marble Based on Quantitative Analysis of Acoustic Emission Waveforms
The decrease of strength after saturation of rocks is known as moisture-induced softening. To date, there are numerous studies on the mechanism of moisture-induced softening of different rocks. However, due to a lack of effective observational methods, the microcosmic mechanism of moisture-induced s...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-01-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/9/3/446 |
| _version_ | 1798045159047299072 |
|---|---|
| author | Yiming Huang Jianhui Deng Jun Zhu |
| author_facet | Yiming Huang Jianhui Deng Jun Zhu |
| author_sort | Yiming Huang |
| collection | DOAJ |
| description | The decrease of strength after saturation of rocks is known as moisture-induced softening. To date, there are numerous studies on the mechanism of moisture-induced softening of different rocks. However, due to a lack of effective observational methods, the microcosmic mechanism of moisture-induced softening still needs to be understood. We collected and processed acoustic emission (AE) signals during the uniaxial compression test of marble specimens. The results of spectral and statistical analysis show that two dominant frequency bands of AE waveforms exist regardless of the specimen’s water content. Additionally, for the AE signals from the saturated specimens, the ranges of the low and high frequency bands are wider than dried rock samples. Besides, since the tensile and shear failures in the rock release low and high dominant frequency AE signals, respectively, the test results of this paper show that micro-shear and micro-tensile failures dominate the final failure of dried and saturated rocks, respectively. |
| first_indexed | 2024-04-11T23:16:11Z |
| format | Article |
| id | doaj.art-158ca999e7a848c4af388f30df4fb143 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-04-11T23:16:11Z |
| publishDate | 2019-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-158ca999e7a848c4af388f30df4fb1432022-12-22T03:57:36ZengMDPI AGApplied Sciences2076-34172019-01-019344610.3390/app9030446app9030446An Experimental Investigation of Moisture-Induced Softening Mechanism of Marble Based on Quantitative Analysis of Acoustic Emission WaveformsYiming Huang0Jianhui Deng1Jun Zhu2State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu 610064, ChinaState Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu 610064, ChinaState Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu 610064, ChinaThe decrease of strength after saturation of rocks is known as moisture-induced softening. To date, there are numerous studies on the mechanism of moisture-induced softening of different rocks. However, due to a lack of effective observational methods, the microcosmic mechanism of moisture-induced softening still needs to be understood. We collected and processed acoustic emission (AE) signals during the uniaxial compression test of marble specimens. The results of spectral and statistical analysis show that two dominant frequency bands of AE waveforms exist regardless of the specimen’s water content. Additionally, for the AE signals from the saturated specimens, the ranges of the low and high frequency bands are wider than dried rock samples. Besides, since the tensile and shear failures in the rock release low and high dominant frequency AE signals, respectively, the test results of this paper show that micro-shear and micro-tensile failures dominate the final failure of dried and saturated rocks, respectively.https://www.mdpi.com/2076-3417/9/3/446marblemoisture-induced softeningacoustic emissionspectrum analysismicrocosmic failureenergy |
| spellingShingle | Yiming Huang Jianhui Deng Jun Zhu An Experimental Investigation of Moisture-Induced Softening Mechanism of Marble Based on Quantitative Analysis of Acoustic Emission Waveforms Applied Sciences marble moisture-induced softening acoustic emission spectrum analysis microcosmic failure energy |
| title | An Experimental Investigation of Moisture-Induced Softening Mechanism of Marble Based on Quantitative Analysis of Acoustic Emission Waveforms |
| title_full | An Experimental Investigation of Moisture-Induced Softening Mechanism of Marble Based on Quantitative Analysis of Acoustic Emission Waveforms |
| title_fullStr | An Experimental Investigation of Moisture-Induced Softening Mechanism of Marble Based on Quantitative Analysis of Acoustic Emission Waveforms |
| title_full_unstemmed | An Experimental Investigation of Moisture-Induced Softening Mechanism of Marble Based on Quantitative Analysis of Acoustic Emission Waveforms |
| title_short | An Experimental Investigation of Moisture-Induced Softening Mechanism of Marble Based on Quantitative Analysis of Acoustic Emission Waveforms |
| title_sort | experimental investigation of moisture induced softening mechanism of marble based on quantitative analysis of acoustic emission waveforms |
| topic | marble moisture-induced softening acoustic emission spectrum analysis microcosmic failure energy |
| url | https://www.mdpi.com/2076-3417/9/3/446 |
| work_keys_str_mv | AT yiminghuang anexperimentalinvestigationofmoistureinducedsofteningmechanismofmarblebasedonquantitativeanalysisofacousticemissionwaveforms AT jianhuideng anexperimentalinvestigationofmoistureinducedsofteningmechanismofmarblebasedonquantitativeanalysisofacousticemissionwaveforms AT junzhu anexperimentalinvestigationofmoistureinducedsofteningmechanismofmarblebasedonquantitativeanalysisofacousticemissionwaveforms AT yiminghuang experimentalinvestigationofmoistureinducedsofteningmechanismofmarblebasedonquantitativeanalysisofacousticemissionwaveforms AT jianhuideng experimentalinvestigationofmoistureinducedsofteningmechanismofmarblebasedonquantitativeanalysisofacousticemissionwaveforms AT junzhu experimentalinvestigationofmoistureinducedsofteningmechanismofmarblebasedonquantitativeanalysisofacousticemissionwaveforms |