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10.21】Dr. Hiroyuki Toda
Title: 3D/4D X-ray...
 
2010-10-13 | 文章来源:材料疲劳与断裂研究部        【 】【打印】【关闭

Title:3D/4D X-ray Tomography Imaging and its Application to Materials Science and Engineering 

Speakers:Dr. Hiroyuki Toda

      Department of Mechanical Engineering, Toyohashi Univ. of Technology

Time:15:30 – 16:30, 21, Oct. (Thurs.) 2010

Venue:Room 249, Lee Hsun building

Welcome to attend!

 

Abstract

As is well known, the tomographic technique has been employed in the industry as well as in the medical diagnostic imaging. Meanwhile, synchrotron radiation (SR) facilities have been identified as ideal X-ray sources for the tomography. X-ray microtomography (XMT) performed using SR facilities has enabled the reconstruction of volumes with a maximum spatial resolution of about 0.05 to 1 micrometer. Thanks to recent advances in the SR XMT, attractive researches have been conducted within the hard X-ray region, demonstrating 3-D images of internal microstructure and other features mainly in light materials but including steel and copper. Especially, 4-D (i.e. 3-D + time) imaging has been demonstrated as a robust tool for the materials science, realizing the in-situ 3-D observations of damage/fracture/fatigue behaviors and the visualization of microstructural changes during materials processes as typical examples. We also have some attempts to utilize 3-D images-based numerical simulation. The XMT technique also has a unique possibility to extract 3D/4D internal information, such as strain, displacement, crack driving forces as a form of 3-D high-density mapping. It has been mainly realized by tracking internal microstructural features under external disturbance. The techniques are clearly advantageous compared to surface or cross-sectional measurements reported in the current literature. Overall, high-resolution SR XMT offers a highly effective way of assessing various long-unrecognized phenomena in the materials science and engineering.

 

CV of Dr. Hiroyuki Toda

Academic degree: Dr. Eng.

Affiliation: Department of Mechanical Engineering, Toyohashi Univ. of Technology

Education: 1987 Kyoto University

Specialty: Structural materials, 3D/4D materials science

Professional career

  • 1987 Materials Laboratory, Suzuki Motor Corp.
  • 1995 Lecturer, Toyohashi University of Technology
  • 1996 Associate Professor, Toyohashi University of Technology
  • 2001-2002 JSPS-Royal Society Bilateral Program Fellow
  • (University of Southampton, UK)
  • 2006- Professor, Toyohashi University of Technology

Major Awards:

  • Young Researcher Prize (The Japan Institute of Light Metals) 1998
  • Best Paper Prize (The Japan Institute of Light Metals) 2001, 2005
  • Young Researcher Prize (The Society of Materials Science) 2002
  • Breakthrough Prize (The Japan Institute of Light Metals) 2004
  • Journal of Physics: Condensed Matter TOP PAPERS 2004
  • The Science Direct TOP25 Hottest Articles 2005
  • Achievement Award (The Japan Institute of Light Metals), 2007
  • Best Paper Prize (The Japan Foundry Engineering Society) 2006, 2010

Achievements: 187 academic and 24 review papers, 84 conference procs. and 6 books.

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