Assessing structural integrity of non-homogeneous systems by means of Acoustic Emissions and Non-Extensive Statistical Mechanics
Taking advantage of the interevent time intervals, namely the time intervals between two successive acoustic events recorded during mechanical loading of structural elements, it is attempted to detect indices warning about upcoming failure. The innovative aspect of the study is that the analysis is...
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Gruppo Italiano Frattura
2024-03-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/4870 |
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| author | Stavros K Kourkoulis Ermioni Pasiou Ilias Stavrakas Dimos Triantis |
| author_facet | Stavros K Kourkoulis Ermioni Pasiou Ilias Stavrakas Dimos Triantis |
| author_sort | Stavros K Kourkoulis |
| collection | DOAJ |
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Taking advantage of the interevent time intervals, namely the time intervals between two successive acoustic events recorded during mechanical loading of structural elements, it is attempted to detect indices warning about upcoming failure. The innovative aspect of the study is that the analysis is implemented in the frame of Non-Extensive Statistical Mechanics, a discipline founded on a class of entropies violating the additivity principle, which is the cornerstone of the Boltzmann-Gibbs Statistical Mechanics. The specimens used for the experiments were marble blocks simulating either fragmented and restored epistyles or mutually interconnected intact epistyles of the Parthenon Temple on the Acropolis of Athens. The specimens consisted of three materials (marble, metallic connectors and cementitious pastes) exhibiting, thus, a strongly non-homogeneous nature. The entropic index, i.e., the parameter quantifying the degree of non-additivity, was used for the analysis of the experimental data. The results were considered in juxtaposition to the respective ones from experimental protocols with specimens of macroscopically homogeneous nature. It was concluded that the temporal evolution of the entropic index provides very good insight into the level of damage accumulated in the loaded structure, independently of whether the structure is homogeneous or not, providing an interesting pre-failure indicator.
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| format | Article |
| id | doaj-art-ebfcfde19242410db01cd5cb09140b6d |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2024-03-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-ebfcfde19242410db01cd5cb09140b6d2025-02-02T22:36:46ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932024-03-011868Assessing structural integrity of non-homogeneous systems by means of Acoustic Emissions and Non-Extensive Statistical MechanicsStavros K Kourkoulis0https://orcid.org/0000-0003-3246-9308Ermioni Pasiou1https://orcid.org/0000-0003-1580-3415Ilias Stavrakas2https://orcid.org/0000-0001-8484-8751Dimos Triantis3https://orcid.org/0000-0003-4219-8687National Technical University of Athens, School of Applied Mathematical and Physical Sciences, Department of Mechanics, Laboratory for Testing and Materials, 5, Heroes of Polytechneion Avenue, “Pericles Theocaris” Building, Zografou Campus, 157 73, Zografou, Attiki, Greece National Technical University of Athens, School of Applied Mathematical and Physical Sciences, Department of Mechanics, Laboratory for Testing and Materials, 5, Heroes of Polytechneion Avenue, “Pericles Theocaris” Building, Zografou Campus, 157 73, Zografou, Attiki, Greece University of West Attica, Faculty of Engineering, Department of Electrical and Electronics Engineering, Electronic Devices and Materials Laboratory, Ancient Olive Grove Campus, Building B, 250 Thivon Avenue, Egaleo Postal Code 122 44, Athens, GreeceUniversity of West Attica, Faculty of Engineering, Department of Electrical and Electronics Engineering, Electronic Devices and Materials Laboratory, Ancient Olive Grove Campus, Building B, 250 Thivon Avenue, Egaleo Postal Code 122 44, Athens, Greece Taking advantage of the interevent time intervals, namely the time intervals between two successive acoustic events recorded during mechanical loading of structural elements, it is attempted to detect indices warning about upcoming failure. The innovative aspect of the study is that the analysis is implemented in the frame of Non-Extensive Statistical Mechanics, a discipline founded on a class of entropies violating the additivity principle, which is the cornerstone of the Boltzmann-Gibbs Statistical Mechanics. The specimens used for the experiments were marble blocks simulating either fragmented and restored epistyles or mutually interconnected intact epistyles of the Parthenon Temple on the Acropolis of Athens. The specimens consisted of three materials (marble, metallic connectors and cementitious pastes) exhibiting, thus, a strongly non-homogeneous nature. The entropic index, i.e., the parameter quantifying the degree of non-additivity, was used for the analysis of the experimental data. The results were considered in juxtaposition to the respective ones from experimental protocols with specimens of macroscopically homogeneous nature. It was concluded that the temporal evolution of the entropic index provides very good insight into the level of damage accumulated in the loaded structure, independently of whether the structure is homogeneous or not, providing an interesting pre-failure indicator. https://www.fracturae.com/index.php/fis/article/view/4870Structural IntegrityStructural Health MonitoringPre-failure indicesInterevent timesNon-Extensive Statistical MechanicsNon Additive Entropies |
| spellingShingle | Stavros K Kourkoulis Ermioni Pasiou Ilias Stavrakas Dimos Triantis Assessing structural integrity of non-homogeneous systems by means of Acoustic Emissions and Non-Extensive Statistical Mechanics Fracture and Structural Integrity Structural Integrity Structural Health Monitoring Pre-failure indices Interevent times Non-Extensive Statistical Mechanics Non Additive Entropies |
| title | Assessing structural integrity of non-homogeneous systems by means of Acoustic Emissions and Non-Extensive Statistical Mechanics |
| title_full | Assessing structural integrity of non-homogeneous systems by means of Acoustic Emissions and Non-Extensive Statistical Mechanics |
| title_fullStr | Assessing structural integrity of non-homogeneous systems by means of Acoustic Emissions and Non-Extensive Statistical Mechanics |
| title_full_unstemmed | Assessing structural integrity of non-homogeneous systems by means of Acoustic Emissions and Non-Extensive Statistical Mechanics |
| title_short | Assessing structural integrity of non-homogeneous systems by means of Acoustic Emissions and Non-Extensive Statistical Mechanics |
| title_sort | assessing structural integrity of non homogeneous systems by means of acoustic emissions and non extensive statistical mechanics |
| topic | Structural Integrity Structural Health Monitoring Pre-failure indices Interevent times Non-Extensive Statistical Mechanics Non Additive Entropies |
| url | https://www.fracturae.com/index.php/fis/article/view/4870 |
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