The fatigue limit of a blunt-notched specimen is dependent on the fatigue crack initiation limit δw1. δw1 is the propagating limit of the micro fatigue crack at notch root. However, before now no method for evaluating the δw1 based on fatigue crack properties had ever been proposed. In this paper, it is suggested that the initial crack size is dependent on the relationship between the application limit of the characteristic elastic field of the notch and the fatigue crack length measured from the notch root. It is also found that when the initial crack size is given, sw1 can be evaluated from the threshold stress intensity factor range ΔKth.
|Number of pages||5|
|Journal||Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A|
|Publication status||Published - 2011|
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering