In these days, quantitative methods are demanded in non-destructive testing of materials and structures, since quantitative evaluation provides basic information to maintain existing structures efficiently and to guarantee the quality of new materials. Elastic wave analysis plays important role in quantitative non-destructive evaluation. In my talk, firstly, fundamental equations for elastic waves are summarized. Then presented is the time domain boundary element analysis based on convolution quadrature method, including numerical examples of nonlinear ultrasonic waves. Lastly, some applications of elastic wave analysis are demonstrated for non-destructive evaluation of flaw imaging based on SAFT(Synthetic Aperture Focusing Technique) in conjunction with approximate wave solutions and water detection using guided waves.
報告人簡介：
Work Experience:
1999 to date : Professor, Tokyo Institute of Technology
1998-1999 : Associate Professor, Tokyo Institute of Technology
1993-1998 : Associate Professor, Okayama University
1988-1993 : Assistant Professor, Okayama University
1987 : Postdoctoral Fellow, Northwestern University
1982-1987 : Assistant Professor, Kyoto University
Education:
1987 :Doctor of Engineering, Kyoto University
1980-1982 : Master Course, Kyoto University
1976-1980 : Kyoto University
Research Field:
Applied Mechanics
Elastodynamics
Boundary Element Methods
Numerical Simulation of Wave Propagation and Scattering
Ultrasonic Nondestructive Evaluation
Environmental Vibration Analysis
Affiliations:
Japan Society of Civil Engineers
The Japanese Society for Non-Destructive Inspection
Japan Society for Computational Engineering and Science
