2023 Fiscal Year Final Research Report
Simple autonomous health monitoring system for infrastructure structures using piezo limit sensors
| Project/Area Number |
20H00290
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Medium-sized Section 25:Social systems engineering, safety engineering, disaster prevention engineering, and related fields
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| Research Institution | Akita Prefectural University |
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Principal Investigator |
SHIMOI Nobuhiro 秋田県立大学, システム科学技術学部, 教授 (10300542)
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| Co-Investigator(Kenkyū-buntansha) |
菅野 秀人 秋田県立大学, システム科学技術学部, 教授 (20336449)
CUADRA CARLOS 秋田県立大学, システム科学技術学部, 准教授 (30302194)
中正 和久 山口大学, 大学院創成科学研究科, 准教授 (40780242)
木村 祥裕 東北大学, 工学研究科, 教授 (60280997)
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| Project Period (FY) |
2020-04-01 – 2024-03-31
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| Keywords | Anchor bolt / Deformed bar / Health monitoring, / Piezoelectric sensor / Steel weld joint / Piezoelectric filme |
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| Outline of Final Research Achievements |
After the huge earthquake many steel structures were constructed using frame welded joints of welded construction and welded base. However, in order to achieve practical utilization of new sensors, both accumulation of data and evaluation method to derive information about structural conditions from the measured data is highly required. To solve such a problem, we would like to measure the structure by health monitoring using a piezoelectric composite sensor. In this study, measurements output voltage because using piezoelectric composite sensors, we recorded the sensor characteristics during measuring robot measurement because of changes in the thickness and shape of the base plate of the piezoelectric composite sensor. Structural FEM for sensor analysis is also introduced to evaluate the mechanism and influence of various environmental factors on the response of the structures.
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| Free Research Field |
計測技術とそのセンサ開発
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| Academic Significance and Societal Importance of the Research Achievements |
現状のインフラ構造物の維持管理費は多額であり、管理責任者の国や地方自治体の予算では全ての構造物の安全管理は不可能である. 構造物の健全性計測は国民の生命・財産を守るために抱える共通の重要課題である. 本研究成果は，建設後50年以上経過するインフラ構造物を安全に使用するためのモニタリング技術, その計測システムに使用するセンサ、健全性を可視化可能にする情報処理の研究にある.老朽化した橋梁等を安心・安全に利用し、物流経路を確保するためにも実施効果は非常に大きく,国民の生活基盤の確保に大きく寄与した研究成果である.
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