The Time-Space Joint Response Characteristics of AE-UT under Step Loading and Its Application
The acoustic emission (AE) and ultrasonic (UT) simultaneous monitoring program is designed using concrete samples under step loading. The time-varying response characteristics of AE-UT are studied and the cross-correlation analysis between AE-UT parameters is obtained. Moreover, the joint response o...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2018/6210594 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832562115259400192 |
|---|---|
| author | Xiaoran Wang Xiaofei Liu Enyuan Wang Chong Zhang Haishan Jia Dexing Li |
| author_facet | Xiaoran Wang Xiaofei Liu Enyuan Wang Chong Zhang Haishan Jia Dexing Li |
| author_sort | Xiaoran Wang |
| collection | DOAJ |
| description | The acoustic emission (AE) and ultrasonic (UT) simultaneous monitoring program is designed using concrete samples under step loading. The time-varying response characteristics of AE-UT are studied and the cross-correlation analysis between AE-UT parameters is obtained. Moreover, the joint response of UT-AE spatial distribution field is analyzed, and an AE-UT joint monitoring method to detect early-warning signals of a rockburst disaster in a coal seam is proposed. The results show the following. (1) During the loading process, the AE pulses/energy and UT attenuation coefficient first slowly decrease and then increase steadily and finally rapidly increase, while the UT velocity shows a trend of first gradually increasing and then slowly decreasing and finally a sharp decline. (2) AE pulses and energy are significantly or highly correlated with the UT velocity and attenuation coefficient. The AE energy and UT attenuation coefficient can better characterize the damage evolution of concrete under step loading. (3) The UT field evolves ahead of the rupture on the surface, and the long/narrow strip distribution region of UT parameters is consistent with the future failure zone; meanwhile, the AE events can visually reflect the evolution path of internal damage as well as the dynamic migration mechanism of UT field. |
| format | Article |
| id | doaj-art-76c29391b293473aaecab7f433bc05e6 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-76c29391b293473aaecab7f433bc05e62025-02-03T01:23:20ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/62105946210594The Time-Space Joint Response Characteristics of AE-UT under Step Loading and Its ApplicationXiaoran Wang0Xiaofei Liu1Enyuan Wang2Chong Zhang3Haishan Jia4Dexing Li5Key Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Ministry of Education, Xuzhou 221116, ChinaKey Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Ministry of Education, Xuzhou 221116, ChinaKey Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Ministry of Education, Xuzhou 221116, ChinaKey Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Ministry of Education, Xuzhou 221116, ChinaKey Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Ministry of Education, Xuzhou 221116, ChinaKey Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Ministry of Education, Xuzhou 221116, ChinaThe acoustic emission (AE) and ultrasonic (UT) simultaneous monitoring program is designed using concrete samples under step loading. The time-varying response characteristics of AE-UT are studied and the cross-correlation analysis between AE-UT parameters is obtained. Moreover, the joint response of UT-AE spatial distribution field is analyzed, and an AE-UT joint monitoring method to detect early-warning signals of a rockburst disaster in a coal seam is proposed. The results show the following. (1) During the loading process, the AE pulses/energy and UT attenuation coefficient first slowly decrease and then increase steadily and finally rapidly increase, while the UT velocity shows a trend of first gradually increasing and then slowly decreasing and finally a sharp decline. (2) AE pulses and energy are significantly or highly correlated with the UT velocity and attenuation coefficient. The AE energy and UT attenuation coefficient can better characterize the damage evolution of concrete under step loading. (3) The UT field evolves ahead of the rupture on the surface, and the long/narrow strip distribution region of UT parameters is consistent with the future failure zone; meanwhile, the AE events can visually reflect the evolution path of internal damage as well as the dynamic migration mechanism of UT field.http://dx.doi.org/10.1155/2018/6210594 |
| spellingShingle | Xiaoran Wang Xiaofei Liu Enyuan Wang Chong Zhang Haishan Jia Dexing Li The Time-Space Joint Response Characteristics of AE-UT under Step Loading and Its Application Shock and Vibration |
| title | The Time-Space Joint Response Characteristics of AE-UT under Step Loading and Its Application |
| title_full | The Time-Space Joint Response Characteristics of AE-UT under Step Loading and Its Application |
| title_fullStr | The Time-Space Joint Response Characteristics of AE-UT under Step Loading and Its Application |
| title_full_unstemmed | The Time-Space Joint Response Characteristics of AE-UT under Step Loading and Its Application |
| title_short | The Time-Space Joint Response Characteristics of AE-UT under Step Loading and Its Application |
| title_sort | time space joint response characteristics of ae ut under step loading and its application |
| url | http://dx.doi.org/10.1155/2018/6210594 |
| work_keys_str_mv | AT xiaoranwang thetimespacejointresponsecharacteristicsofaeutundersteploadinganditsapplication AT xiaofeiliu thetimespacejointresponsecharacteristicsofaeutundersteploadinganditsapplication AT enyuanwang thetimespacejointresponsecharacteristicsofaeutundersteploadinganditsapplication AT chongzhang thetimespacejointresponsecharacteristicsofaeutundersteploadinganditsapplication AT haishanjia thetimespacejointresponsecharacteristicsofaeutundersteploadinganditsapplication AT dexingli thetimespacejointresponsecharacteristicsofaeutundersteploadinganditsapplication AT xiaoranwang timespacejointresponsecharacteristicsofaeutundersteploadinganditsapplication AT xiaofeiliu timespacejointresponsecharacteristicsofaeutundersteploadinganditsapplication AT enyuanwang timespacejointresponsecharacteristicsofaeutundersteploadinganditsapplication AT chongzhang timespacejointresponsecharacteristicsofaeutundersteploadinganditsapplication AT haishanjia timespacejointresponsecharacteristicsofaeutundersteploadinganditsapplication AT dexingli timespacejointresponsecharacteristicsofaeutundersteploadinganditsapplication |