Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5019750 | Theoretical and Applied Fracture Mechanics | 2017 | 33 Pages |
Abstract
In this study, the strain rate concentration is considered for high speed tensile test, which is now being recognized as a standard testing method. To evaluate the impact strength of engineering materials under high impact speed, Izod and Charpy tests are unsuitable since they cannot control the impact speeds and therefore do not coincide with the real failure of real products. For smooth specimens, the strain rate can be determined from the tensile speed u/t and specimen length l as εÌsmooth=u/tl. For notched specimens, however, the strain rate at the notch root εÌnotch should be analyzed accurately. In this study, therefore, the strain rate concentration factor defined as KtεÌ=εÌnotch/εÌsmooth is studied with varying the notch geometry and specimen length. It is found that the strain concentration factor KtÎµÌ can be estimated from stress concentration factor Ktâ.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
Nao-Aki Noda, Yunong Shen, Rei Takaki, Daichi Akagi, Tomohiro Ikeda, Yoshikazu Sano, Yasushi Takase,