Modal analysis of guided waves propagating in pipes

2016 Fiscal Year Final Research Report

• Project/Area Number: 26390109
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: General applied physics
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Harumichi Sato 国立研究開発法人産業技術総合研究所, 製造技術研究部門, 主任研究員 (90357145)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 超音波 / ガイド波 / パイプ

Outline of Final Research Achievements

Pipes are widely used in living infrastructure. In order to secure these safety, to improve the performance and reliability of semiconductors and pharmaceuticals and to lower the price, it is necessary to develop nondestructive inspection and highly accurate ultrasonic flowmeter. However, the ultrasonic wave (guided wave) propagating through the pipe has frequency dependence on the mode and displacement distribution, and it is complicated, so there is a lack of fundamental and systematic research. Therefore, we developed a program of 3D-FEM corresponding to the cylindrical coordinate system, and compared the analytical solution of the wave equation, and analyzed the mode of the guided wave propagating through the pipe.

Free Research Field

非破壊検査