English Abstract

High-speed 3D Observation of Rubber Fracture Phenomena

Wataru YASHIRO *1 *2 *3
Xiaoyu LIANG *2
Kentaro KAJIWARA *4
Hiroyuki KUDO *5
Yasumasa BITO *6
Hiroyuki KISHIMOTO *6
*1:International Center for Synchrotron Radiation Innovation Smart (SRIS), Tohoku University, Aoba-ku, Sendai, Miyagi
*2:Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Aoba-ku, Sendai, Miyagi
*3:Department of Applied Physics, School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
*4:Synchrotron Radiation Research Institute (JASRI), Sayo-gun, Sayo-cho, Hyogo
*5:Faculty of Engineering, Information and Systems, University of Tsukuba, Tennodai, Tsukuba, Ibaraki
*6:Sumitomo Rubber Industries Ltd,, Chuou-ku, Kobe, Hyogo
Nippon Gomu Kyokaishi,(2022),95(12),359-362 General Review in Japanese

X-ray computed tomography (CT) is a non-destructive three-dimensional visualization method that uses the high penetrating power of hard X-rays with energy of 10 keV or higher to visualize the inside of a sample. We realized 4D (3D + time) X-ray CT with a temporal resolution of 10 ms and a pixel size of 4.2 m using a white synchrotron beam from a bending magnet source of the third-generation synchrotron facility. Real-time observation of the tensile fracture process of a tire rubber sample was successfully achieved for the first time. It is expected that our approach has various applications, such as mechanical fracture of soft materials, adhesive interface fracture, friction, and wear mechanisms.

Keywords: X-ray Tomography, Synchrotron Radiation, Real Time, Millisecond, Fracture