September 27, 2017
Keio University
A research group at Keio University, led by Atsuhito Moriwaki (a first-year master's student at the Graduate School of Science and Technology), Senior Assistant Professor Makoto Okano, and Associate Professor Shin-ichi Watanabe (both from the Department of Physics, Faculty of Science and Technology), has succeeded in the quantitative strain imaging of black rubber materials using a terahertz polarization measurement method.
Black rubber is widely used in products such as tires and vibration-damping rubber, but because it is opaque to light, inspecting its internal strain has been difficult. By using terahertz light, which can penetrate black rubber, the group has now achieved quantitative imaging measurements of each component of the strain tensor, which represents the amount of strain. The results of this research enable a more quantitative understanding of the internal strain state of black rubber materials. It is expected to become a new nondestructive testing tool for various rubber materials in the future.
The results of this research were published in "APL Photonics" on September 22, 2017 (local time).
Please see below for the full press release.