Ultrasonic Pulse-Echo Signal Analysis for Damage Evaluation of Metallic Slit-Plate Hysteretic Dampers
This paper proposes a pulse-echo Ultrasonic Testing (UT) methodology to quantify the damage of hysteretic dampers subjected to cyclic loadings. Energy dissipation is known as an innovative strategy for the protection of buildings against earthquakes. It consists of installing special devices called...
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-11-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/7/12/526 |
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| author | Chihab Abarkane David Galé-Lamuela Amadeo Benavent-Climent Elisabet Suárez Antolino Gallego |
| author_facet | Chihab Abarkane David Galé-Lamuela Amadeo Benavent-Climent Elisabet Suárez Antolino Gallego |
| author_sort | Chihab Abarkane |
| collection | DOAJ |
| description | This paper proposes a pulse-echo Ultrasonic Testing (UT) methodology to quantify the damage of hysteretic dampers subjected to cyclic loadings. Energy dissipation is known as an innovative strategy for the protection of buildings against earthquakes. It consists of installing special devices called dampers in the construction, which are entrusted to dissipate most of the energy input by the earthquake, thus keeping the main structure basically undamaged. In particular, the hysteretic dampers dissipate the input energy through plastic deformations in their metallic parts. Several moderate ground motions would not exhaust the capacity of the dampers, but they cause damage—plastic deformations in the device. Therefore, continuous or periodic inspections of the damper are required in order to decide upon its eventual replacement. In this particular work, several hysteretic dampers made of stainless steel were subjected to different patterns of low-frequency cyclic loads that caused diverse levels of damage. Each damper underwent pulse-echo UT before and after the cyclic loading. Spectral energy of the echo signals was properly calculated at each damage level in order to define a reliable damage index. The new index has been compared with a well-established mechanical damage index, ID, previously proposed by the authors. A successful correlation was observed, making the pulse-echo UT technique promising for this particular application. |
| first_indexed | 2024-12-12T09:54:59Z |
| format | Article |
| id | doaj.art-931c3e5016c747ba9ebdbc1bc33bb1e9 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-12T09:54:59Z |
| publishDate | 2017-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-931c3e5016c747ba9ebdbc1bc33bb1e92022-12-22T00:28:09ZengMDPI AGMetals2075-47012017-11-0171252610.3390/met7120526met7120526Ultrasonic Pulse-Echo Signal Analysis for Damage Evaluation of Metallic Slit-Plate Hysteretic DampersChihab Abarkane0David Galé-Lamuela1Amadeo Benavent-Climent2Elisabet Suárez3Antolino Gallego4Department of Applied Physics, School of Building Engineering, University of Granada, 18071 Granada, SpainDepartment of Mechanical Engineering, Polytechnic University of Madrid, 28006 Madrid, SpainDepartment of Mechanical Engineering, Polytechnic University of Madrid, 28006 Madrid, SpainDepartment of Applied Physics, School of Building Engineering, University of Granada, 18071 Granada, SpainDepartment of Applied Physics, School of Building Engineering, University of Granada, 18071 Granada, SpainThis paper proposes a pulse-echo Ultrasonic Testing (UT) methodology to quantify the damage of hysteretic dampers subjected to cyclic loadings. Energy dissipation is known as an innovative strategy for the protection of buildings against earthquakes. It consists of installing special devices called dampers in the construction, which are entrusted to dissipate most of the energy input by the earthquake, thus keeping the main structure basically undamaged. In particular, the hysteretic dampers dissipate the input energy through plastic deformations in their metallic parts. Several moderate ground motions would not exhaust the capacity of the dampers, but they cause damage—plastic deformations in the device. Therefore, continuous or periodic inspections of the damper are required in order to decide upon its eventual replacement. In this particular work, several hysteretic dampers made of stainless steel were subjected to different patterns of low-frequency cyclic loads that caused diverse levels of damage. Each damper underwent pulse-echo UT before and after the cyclic loading. Spectral energy of the echo signals was properly calculated at each damage level in order to define a reliable damage index. The new index has been compared with a well-established mechanical damage index, ID, previously proposed by the authors. A successful correlation was observed, making the pulse-echo UT technique promising for this particular application.https://www.mdpi.com/2075-4701/7/12/526non-destructive testingultrasoundseismic engineeringdampers |
| spellingShingle | Chihab Abarkane David Galé-Lamuela Amadeo Benavent-Climent Elisabet Suárez Antolino Gallego Ultrasonic Pulse-Echo Signal Analysis for Damage Evaluation of Metallic Slit-Plate Hysteretic Dampers Metals non-destructive testing ultrasound seismic engineering dampers |
| title | Ultrasonic Pulse-Echo Signal Analysis for Damage Evaluation of Metallic Slit-Plate Hysteretic Dampers |
| title_full | Ultrasonic Pulse-Echo Signal Analysis for Damage Evaluation of Metallic Slit-Plate Hysteretic Dampers |
| title_fullStr | Ultrasonic Pulse-Echo Signal Analysis for Damage Evaluation of Metallic Slit-Plate Hysteretic Dampers |
| title_full_unstemmed | Ultrasonic Pulse-Echo Signal Analysis for Damage Evaluation of Metallic Slit-Plate Hysteretic Dampers |
| title_short | Ultrasonic Pulse-Echo Signal Analysis for Damage Evaluation of Metallic Slit-Plate Hysteretic Dampers |
| title_sort | ultrasonic pulse echo signal analysis for damage evaluation of metallic slit plate hysteretic dampers |
| topic | non-destructive testing ultrasound seismic engineering dampers |
| url | https://www.mdpi.com/2075-4701/7/12/526 |
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