Pre-failure indicators detected by Acoustic Emission: Alfas stone, cement-mortar and cement-paste specimens under 3-point bending
Acoustic Emission (AE) is the technique most widely used nowadays for Structural Health Monitoring (SHM). Application of this technique for continuous SHM of restored elements of stone monuments is a challenging task. The co-existence of different materials creates interfaces rendering “identificati...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2018-07-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1846 |
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| author | Stavros K. Kourkoulis Ioanna Dakanali |
| author_facet | Stavros K. Kourkoulis Ioanna Dakanali |
| author_sort | Stavros K. Kourkoulis |
| collection | DOAJ |
| description | Acoustic Emission (AE) is the technique most widely used nowadays for Structural Health Monitoring (SHM). Application of this technique for continuous SHM of restored elements of stone monuments is a challenging task. The co-existence of different materials creates interfaces rendering “identification” of the signals recorded very complicated. To overcome this difficulty one should have a clear overview of the nature of AE signals recorded when each one of the constituent materials is loaded mechanically. In this direction, an attempt is here described to enlighten the signals recorded, in case a series of structural materials (natural and artificial), extensively used for restoration projects of classic monuments in Greece, are subjected to 3-point bending. It is hoped that obtaining a clear understanding of the nature of AE signals recorded during these elementary tests will provide a valuable tool permitting “identification” and “classification” of signals emitted in case of structural tests. The results appear encouraging. In addition, it is concluded that for all materials tested (in spite their differences in microstructure and composition) clear prefailure indicators are detected, in good accordance to similar indicators provided by other techniques like the Pressure Stimulated Currents (PSC) one. |
| format | Article |
| id | doaj-art-70f9cf8c4ef34c92b8bc23c4d90119b9 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2018-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-70f9cf8c4ef34c92b8bc23c4d90119b92025-01-03T00:39:57ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932018-07-011140Pre-failure indicators detected by Acoustic Emission: Alfas stone, cement-mortar and cement-paste specimens under 3-point bendingStavros K. KourkoulisIoanna DakanaliAcoustic Emission (AE) is the technique most widely used nowadays for Structural Health Monitoring (SHM). Application of this technique for continuous SHM of restored elements of stone monuments is a challenging task. The co-existence of different materials creates interfaces rendering “identification” of the signals recorded very complicated. To overcome this difficulty one should have a clear overview of the nature of AE signals recorded when each one of the constituent materials is loaded mechanically. In this direction, an attempt is here described to enlighten the signals recorded, in case a series of structural materials (natural and artificial), extensively used for restoration projects of classic monuments in Greece, are subjected to 3-point bending. It is hoped that obtaining a clear understanding of the nature of AE signals recorded during these elementary tests will provide a valuable tool permitting “identification” and “classification” of signals emitted in case of structural tests. The results appear encouraging. In addition, it is concluded that for all materials tested (in spite their differences in microstructure and composition) clear prefailure indicators are detected, in good accordance to similar indicators provided by other techniques like the Pressure Stimulated Currents (PSC) one.https://www.fracturae.com/index.php/fis/article/view/1846Alfas stoneMortarCement pasteThree-point bending testPre-failure indicatorsAcoustic Emission |
| spellingShingle | Stavros K. Kourkoulis Ioanna Dakanali Pre-failure indicators detected by Acoustic Emission: Alfas stone, cement-mortar and cement-paste specimens under 3-point bending Fracture and Structural Integrity Alfas stone Mortar Cement paste Three-point bending test Pre-failure indicators Acoustic Emission |
| title | Pre-failure indicators detected by Acoustic Emission: Alfas stone, cement-mortar and cement-paste specimens under 3-point bending |
| title_full | Pre-failure indicators detected by Acoustic Emission: Alfas stone, cement-mortar and cement-paste specimens under 3-point bending |
| title_fullStr | Pre-failure indicators detected by Acoustic Emission: Alfas stone, cement-mortar and cement-paste specimens under 3-point bending |
| title_full_unstemmed | Pre-failure indicators detected by Acoustic Emission: Alfas stone, cement-mortar and cement-paste specimens under 3-point bending |
| title_short | Pre-failure indicators detected by Acoustic Emission: Alfas stone, cement-mortar and cement-paste specimens under 3-point bending |
| title_sort | pre failure indicators detected by acoustic emission alfas stone cement mortar and cement paste specimens under 3 point bending |
| topic | Alfas stone Mortar Cement paste Three-point bending test Pre-failure indicators Acoustic Emission |
| url | https://www.fracturae.com/index.php/fis/article/view/1846 |
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