Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 08, 2016 - October 10, 2016
A fatigue limit estimation method based on dissipated energy measurement with an infrared thermography has been proposed and got an increasing attention recently. However, a fundamental principle of the method has not been clarified yet. In addition, the method was still applied to a limited material in a previous study. Light weight metals which have high strength to weight ratio are positively used in engineering structures and components where light weight is required. Therefore, an applicability evaluation of the method to the light weight metals is worthwhile. As part of the applicability evaluation, the method was applied to a plate specimen made of aluminum alloy 6061-T6 in this study. An estimated fatigue limit by the method was compared with two types of fatigue strength which was calculated from the tensile strength of the investigated material and obtained from a literature. As a result, the method had a possibility to estimate the fatigue strength of the aluminum alloy 6061-T6 at 107 cycles, although the more detailed investigation was needed.
