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 wide¬ly used now¬adays for Structural Health Monitor¬ing (SHM). Application of this technique for continuous SHM of restored elements of stone monuments is a challeng¬ing task. The co-existence of different materials creates interfaces rendering “identi¬f...
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| Format: | Article |
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Gruppo Italiano Frattura
2017-04-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero40/numero_40_art_7.pdf |
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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 wide¬ly used now¬adays for Structural Health Monitor¬ing (SHM). Application of this technique for continuous SHM of restored elements of stone monuments is a challeng¬ing task. The co-existence of different materials creates interfaces rendering “identi¬fication” 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), ex-tensively 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 re¬corded during these element¬ary 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 micro¬structure and composition) clear pre-failure indicators are detected, in good accordance to similar indicators pro-vided by other techniques like the Pressure Stimulated Currents (PSC) one. |
| format | Article |
| id | doaj-art-d292094e5b7c4f86af0e39ba28da3628 |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2017-04-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-d292094e5b7c4f86af0e39ba28da36282025-02-03T00:44:38ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932017-04-011140748410.3221/IGF-ESIS.40.07Pre-failure indicators detected by Acoustic Emission: Alfas stone, cement-mortar and cement-paste specimens under 3-point bendingStavros K. Kourkoulis0Ioanna Dakanali1Laboratory of Testing and Materials, Department of Mechanics, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou Campus, 157 73 Athens, Greece Laboratory of Testing and Materials, Department of Mechanics, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou Campus, 157 73 Athens, Greece Acoustic Emission (AE) is the technique most wide¬ly used now¬adays for Structural Health Monitor¬ing (SHM). Application of this technique for continuous SHM of restored elements of stone monuments is a challeng¬ing task. The co-existence of different materials creates interfaces rendering “identi¬fication” 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), ex-tensively 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 re¬corded during these element¬ary 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 micro¬structure and composition) clear pre-failure indicators are detected, in good accordance to similar indicators pro-vided by other techniques like the Pressure Stimulated Currents (PSC) one.http://www.gruppofrattura.it/pdf/rivista/numero40/numero_40_art_7.pdfAlfas 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 | http://www.gruppofrattura.it/pdf/rivista/numero40/numero_40_art_7.pdf |
| work_keys_str_mv | AT stavroskkourkoulis prefailureindicatorsdetectedbyacousticemissionalfasstonecementmortarandcementpastespecimensunder3pointbending AT ioannadakanali prefailureindicatorsdetectedbyacousticemissionalfasstonecementmortarandcementpastespecimensunder3pointbending |