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2022 Fiscal Year Final Research Report

Development of diver-less Non-contact Ultrasonic Thickness Measurement Method by miniaturization of ultrasonic transducer and contracting remote measurement system

Research Project

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Project/Area Number 20K14998
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 25020:Safety engineering-related
Research InstitutionKisarazu National College of Technology

Principal Investigator

ABUKAWA Kazuki  木更津工業高等専門学校, 環境都市工学科, 准教授 (50756731)

Project Period (FY) 2020-04-01 – 2023-03-31
Keywords超音波 / 非破壊検査 / 厚み計測 / 鋼構造物 / 水中ロボット
Outline of Final Research Achievements

In this study, to develop a diver less ultrasonic non-contact wall thickness measurement method, we miniaturized the underwater sensor unit and experiments with the sensor mounted on an ROV. At the result, even with rusted steel plates, a tilt of approximately 3° could be measured. Although there are issues to be addressed in the future, such as improvement of the jig and operability of the ROV, the same measurement results were obtained as in the case of the miniaturization study, suggesting that remote measurement is feasible.

Free Research Field

水中音響技術,非破壊検査

Academic Significance and Societal Importance of the Research Achievements

従来方式である超音波厚み計を用いた接触式肉厚測定に代わる点検手法が開発・検討されているが、人がセンサー部を持ちダイバーレス測定が可能な正確に効率よく安価で客観的に計測する有効な技術は未だない。本研究により、今まで施設を停止して点検しなければならなかった,もしくは点検できなかった危険水域での鋼構造部材の肉厚測定が可能となり,水中鋼構造物の維持管理技術の向上が期待できる。また,本研究により開発した技術を以前開発した既開発装置にフィードバックすることにより、さらなる港湾係留施設の維持管理技術の向上が期待できる。

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Published: 2024-01-30  

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