Quantitative nondestructive evaluation using ultrasonic wave visualization technique for structural health monitoring

2017 Fiscal Year Final Research Report

• Project/Area Number: 25420426
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Measurement engineering
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: YAMAMOTO Tetsuya 国立研究開発法人産業技術総合研究所, 計量標準総合センター, 主任研究員 (30312755)
• Project Period (FY): 2013-04-01 – 2018-03-31
• Keywords: 非破壊計測 / 波動伝搬 / 劣化予測・診断

Outline of Final Research Achievements

We are now facing an urgent issue how to maintain the security and reliability in large construnctions, energy plants, transportation viecles, industrial machinery, and so on. In our research group, the visualization system using ultrasonic waves for nondestructive evaluation has been proposed and the effectiveness of this system has been demonstrated. The visualization of scattered waves from the defectes/damges facilitates the judgement in nondestructive evaluation. This research targets to establish the technology that can grasp the defects more precisely. Moreover, further expansion for application scope is also investigated. In addition, the nondestructive evaluation method using microwaves is considered, because this method can instantaneously detect the defects for very long metal tubes. Finally, the mock-ups (specimens) are fabricated and tested. The good agreements between calculated and measured results were confirmed and the validity of this research was certified.

Free Research Field

工学