Journal
INTERNATIONAL JOURNAL OF FATIGUE
Volume 105, Issue -, Pages 86-96Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2017.08.014
Keywords
Ultrasonic-fatigue; S-N curves; Endurance limit; Fatigue-crack arrest; Copper; Micro; and nanostructure
Ask authors/readers for more resources
Predicting life times of structures, machines and their parts as well as very small electronic devices for medical purposes is especially difficult for very low stress amplitudes and very high numbers of cycles. The development of the ultrasonic-fatigue method resulted in a reliable testing technique for VHCF loading. Some of its properties are described in this paper. To offer an explanation for the somewhat controversial ultrasonic-fatigue properties reported in the literature, S-N tests were performed at 19 kHz and 20 Hz on polycrystalline copper - a nominally homogenous and ductile material. Moreover, plastic-strain measurements were performed. In addition, micro-structural features and their changes in the high and very-high cycle regimes are reported. (C) 2017 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available