Open Access

ARTICLE

Recent Researches on Gigacycle Fatigue using Ultrasonic Fatigue Testing in NIMS

Y. Furuya¹

1 NIMS, Tsukuba, Ibaraki, Japan

Structural Longevity 2009, 2(3), 147-156. https://doi.org/10.3970/sl.2009.002.147

Abstract

This paper introduces results of researches on gigacycle fatigue using ultrasonic fatigue testing in NIMS. The first step was investigations of validity of the ultrasonic fatigue testing. As the result, the validity was conformed on conditions where fish-eye fracture occurred. The second step was additional developments on the ultrasonic fatigue testing, such as superimposing mean stress, enlargement of specimens and so on. This step elucidated the mean stress effects and size effects on the fish-eye fracture properties.

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Keywords

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