MEMS Vibrational Power Generator for Bridge Slab and Pier Health Monitoring
Micro energy harvesters (MEH) based on microelectromechanical systems (MEMS) are rapidly developing, providing a green and virtually infinite energy source. The electrostatic vibratory power generator outputs electric power when it vibrates, motivating us to apply it to vibrating civil infrastructur...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-11-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/22/8258 |
| _version_ | 1797547185084039168 |
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| author | Katsufumi Hashimoto Tomoki Shiotani Hiroyuki Mitsuya Kai-Chun Chang |
| author_facet | Katsufumi Hashimoto Tomoki Shiotani Hiroyuki Mitsuya Kai-Chun Chang |
| author_sort | Katsufumi Hashimoto |
| collection | DOAJ |
| description | Micro energy harvesters (MEH) based on microelectromechanical systems (MEMS) are rapidly developing, providing a green and virtually infinite energy source. The electrostatic vibratory power generator outputs electric power when it vibrates, motivating us to apply it to vibrating civil infrastructures excited by ambient and daily traffic loadings. In this study, an innovative monitoring system utilizing MEH devices was proposed for detecting slab damage and pier scours for bridge structures. Its performance was numerically investigated with finite element models, where the damage in slabs was modeled with a reduced Young’s modulus and scours with fixed boundaries of inclined depth. It was shown that the powers generated at each MEH varied as the target structure’s modal frequency shifted and amplitude changed by damage or scour. A power generation index was proposed to identify slab damage and a reference-free method was introduced to detect uneven pier scours. Utilizing an electrostatic vibration-based MEH (MEMS vibrational power generator), this pioneering study showed that MEMS vibrational power generators can work as sensors for an infrastructure structural health monitoring system. |
| first_indexed | 2024-03-10T14:40:40Z |
| format | Article |
| id | doaj.art-2708d361e710422cad2c8efc775ed0b6 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T14:40:40Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-2708d361e710422cad2c8efc775ed0b62023-11-20T21:47:22ZengMDPI AGApplied Sciences2076-34172020-11-011022825810.3390/app10228258MEMS Vibrational Power Generator for Bridge Slab and Pier Health MonitoringKatsufumi Hashimoto0Tomoki Shiotani1Hiroyuki Mitsuya2Kai-Chun Chang3Department of Civil and Earth Resources Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8540, JapanDepartment of Civil and Earth Resources Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8540, JapanR&D Center, Saginomiya Seisakusho, Inc., Saitama 350-1395, JapanDepartment of Civil and Earth Resources Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8540, JapanMicro energy harvesters (MEH) based on microelectromechanical systems (MEMS) are rapidly developing, providing a green and virtually infinite energy source. The electrostatic vibratory power generator outputs electric power when it vibrates, motivating us to apply it to vibrating civil infrastructures excited by ambient and daily traffic loadings. In this study, an innovative monitoring system utilizing MEH devices was proposed for detecting slab damage and pier scours for bridge structures. Its performance was numerically investigated with finite element models, where the damage in slabs was modeled with a reduced Young’s modulus and scours with fixed boundaries of inclined depth. It was shown that the powers generated at each MEH varied as the target structure’s modal frequency shifted and amplitude changed by damage or scour. A power generation index was proposed to identify slab damage and a reference-free method was introduced to detect uneven pier scours. Utilizing an electrostatic vibration-based MEH (MEMS vibrational power generator), this pioneering study showed that MEMS vibrational power generators can work as sensors for an infrastructure structural health monitoring system.https://www.mdpi.com/2076-3417/10/22/8258MEMSMicro Energy Harvesterstructural health monitoringvibrationfrequencyamplitude |
| spellingShingle | Katsufumi Hashimoto Tomoki Shiotani Hiroyuki Mitsuya Kai-Chun Chang MEMS Vibrational Power Generator for Bridge Slab and Pier Health Monitoring Applied Sciences MEMS Micro Energy Harvester structural health monitoring vibration frequency amplitude |
| title | MEMS Vibrational Power Generator for Bridge Slab and Pier Health Monitoring |
| title_full | MEMS Vibrational Power Generator for Bridge Slab and Pier Health Monitoring |
| title_fullStr | MEMS Vibrational Power Generator for Bridge Slab and Pier Health Monitoring |
| title_full_unstemmed | MEMS Vibrational Power Generator for Bridge Slab and Pier Health Monitoring |
| title_short | MEMS Vibrational Power Generator for Bridge Slab and Pier Health Monitoring |
| title_sort | mems vibrational power generator for bridge slab and pier health monitoring |
| topic | MEMS Micro Energy Harvester structural health monitoring vibration frequency amplitude |
| url | https://www.mdpi.com/2076-3417/10/22/8258 |
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