Instantaneous Spectral Entropy: An Application for the Online Monitoring of Multi-Storey Frame Structures
Damage assessment techniques based on entropy measurements have been recently proposed for the structural health monitoring of civil structures and infrastructures. A quasi-real-time approach, based on the use of instantaneous spectral entropy (ISE) over an uninterrupted stream of data, is discussed...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/12/3/310 |
| _version_ | 1797447000525897728 |
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| author | Marco Civera Cecilia Surace |
| author_facet | Marco Civera Cecilia Surace |
| author_sort | Marco Civera |
| collection | DOAJ |
| description | Damage assessment techniques based on entropy measurements have been recently proposed for the structural health monitoring of civil structures and infrastructures. A quasi-real-time approach, based on the use of instantaneous spectral entropy (ISE) over an uninterrupted stream of data, is discussed here. The methodology is proposed for the detection of sudden damage-related structural changes (more specifically, linear stiffness reductions and nonlinear breathing cracks). The method operates by framing the continuous stream of vibration signals and comparing the single frames to a known baseline. The approach is also suitable for nonstationary signals originating from nonlinearly behaving structures. The procedure is validated on an experimental benchmark: a laboratory-scaled model of a three-storey single-span frame metallic structure. Three different definitions of entropy and six candidate time–frequency/time-scale transforms have been tested to find the optimal settings. |
| first_indexed | 2024-03-09T13:48:33Z |
| format | Article |
| id | doaj.art-db6f3953ca49409096fd76b1bd95530c |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-09T13:48:33Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-db6f3953ca49409096fd76b1bd95530c2023-11-30T20:54:50ZengMDPI AGBuildings2075-53092022-03-0112331010.3390/buildings12030310Instantaneous Spectral Entropy: An Application for the Online Monitoring of Multi-Storey Frame StructuresMarco Civera0Cecilia Surace1Department of Structural, Geotechnical and Building Engineering—DISEG, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, ItalyDepartment of Structural, Geotechnical and Building Engineering—DISEG, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, ItalyDamage assessment techniques based on entropy measurements have been recently proposed for the structural health monitoring of civil structures and infrastructures. A quasi-real-time approach, based on the use of instantaneous spectral entropy (ISE) over an uninterrupted stream of data, is discussed here. The methodology is proposed for the detection of sudden damage-related structural changes (more specifically, linear stiffness reductions and nonlinear breathing cracks). The method operates by framing the continuous stream of vibration signals and comparing the single frames to a known baseline. The approach is also suitable for nonstationary signals originating from nonlinearly behaving structures. The procedure is validated on an experimental benchmark: a laboratory-scaled model of a three-storey single-span frame metallic structure. Three different definitions of entropy and six candidate time–frequency/time-scale transforms have been tested to find the optimal settings.https://www.mdpi.com/2075-5309/12/3/310entropy measurementsinstantaneous spectral entropydamage detectionstructural health monitoringreal-time monitoringmulti-storey buildings |
| spellingShingle | Marco Civera Cecilia Surace Instantaneous Spectral Entropy: An Application for the Online Monitoring of Multi-Storey Frame Structures Buildings entropy measurements instantaneous spectral entropy damage detection structural health monitoring real-time monitoring multi-storey buildings |
| title | Instantaneous Spectral Entropy: An Application for the Online Monitoring of Multi-Storey Frame Structures |
| title_full | Instantaneous Spectral Entropy: An Application for the Online Monitoring of Multi-Storey Frame Structures |
| title_fullStr | Instantaneous Spectral Entropy: An Application for the Online Monitoring of Multi-Storey Frame Structures |
| title_full_unstemmed | Instantaneous Spectral Entropy: An Application for the Online Monitoring of Multi-Storey Frame Structures |
| title_short | Instantaneous Spectral Entropy: An Application for the Online Monitoring of Multi-Storey Frame Structures |
| title_sort | instantaneous spectral entropy an application for the online monitoring of multi storey frame structures |
| topic | entropy measurements instantaneous spectral entropy damage detection structural health monitoring real-time monitoring multi-storey buildings |
| url | https://www.mdpi.com/2075-5309/12/3/310 |
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