|
This article is cited in 3 scientific papers (total in 3 papers)
Using speckle images for determining the local plastic strains arising at high-cycle fatigue of 09G2S steel
A. P. Vladimirovab, Drukarenko N.Aa, K. E. Myznovb a Institute of Engineering Science, Urals Branch, Russian Academy of Sciences, Ekaterinburg
b Ural Federal University named after the First President of Russia B. N. Yeltsin, Ekaterinburg
Abstract:
Plastic strains arising in the zone of fatigue crack initiation are estimated with the aid of time-averaged speckle images on a sample of 09G2S steel with two grooves 2.5 mm in radius. It is shown that the fatigue fracture appears owing to localization of irreversible processes in the region less than 1 mm and the limit value of tension plastic strains is on the order of 10$^{-1}$. As an indication of fracture, it is proposed to use the fact that the normed temporal autocorrelation function of radiation intensity reduces to a negative value.
Keywords:
speckles, image, high-cycle fatigue, deformation, fracture.
Received: 04.03.2021 Revised: 16.04.2021 Accepted: 04.05.2021
Citation:
A. P. Vladimirov, Drukarenko N.A, K. E. Myznov, “Using speckle images for determining the local plastic strains arising at high-cycle fatigue of 09G2S steel”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 47:15 (2021), 35–38; Tech. Phys. Lett., 47:11 (2021), 777–780
Linking options:
https://www.mathnet.ru/eng/pjtf4722 https://www.mathnet.ru/eng/pjtf/v47/i15/p35
|
Statistics & downloads: |
Abstract page: | 57 | Full-text PDF : | 30 |
|