High-speed wide-range measurement by very high-intensity aerial ultrasonic phased array wave source scanning method

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K04931
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 25020:Safety engineering-related
• Research Institution: Nihon University
• Principal Investigator: OSUMI Ayumu 日本大学, 理工学部, 准教授 (40579413)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 空中超音波 / 非接触計測 / 高速計測 / 空中超音波フェイズドアレイ / 非破壊検査

Outline of Final Research Achievements

The purpose of this study is to propose and realize the airborne ultrasound phased array wave source scanning method as a method for performing non-contact high speed non-destructive inspection for thin metal plate materials. Specifically, we first designed and developed an aerial ultrasonic phased array for non-destructive inspection and developed a drive algorithm. Next, we developed a visualization algorithm and implemented it in the measurement system. Finally, using the developed airborne ultrasound phased array and a measurement system equipped with a visualization algorithm, a verification test was conducted on the thinning area provided on the thin metal plate.

Free Research Field

非破壊検査工学

Academic Significance and Societal Importance of the Research Achievements

工場プラントなどの大型構造物から航空機部品や電車車両・自動車に至るまで，金属製材料の非破壊検査は社会の安全性から品質の評価までを行う非常に重要な検査である．一方で，運行業務への影響や納品期限による検査時間の制限があるため，広範囲を高速検査できる方法が望まれている．本研究では，上記を実現できる方法として空中超音波フェーズドアレイ波源走査法を創出し，非接触高速非破壊検査について実証した．