Open AccessCharacterization of Low Cycle Fatigue Parameters of Rotor Steel using Sub-sized Specimens
Author(s) -
Radek Procházka,
Pavel Konopík
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/723/1/012027
Subject(s) - low cycle fatigue , materials science , digital image correlation , rotor (electric) , strain gauge , structural engineering , cyclic stress , hysteresis , characterization (materials science) , strain (injury) , composite material , fatigue testing , mechanical engineering , engineering , physics , medicine , quantum mechanics , nanotechnology
The paper is dealing with strain controlled cyclic testing method employing a novel strain-control technique based on digital image correlation (DIC) in low-cycle fatigue (LCF) region. The cyclic behaviour of 22CrMoNiWV 8-8 rotor steel was investigated on sub-sized round specimens with a diameter of 2 mm in gage length and total length of 20 mm. These results were compared with results obtained using conventional specimens designed in accordance with the ASTM E606 standard. The attention was paid to confirm the suitability of the proposed sub-sized geometry, testing set up and procedure. The test procedure and results obtained enabled to record hysteresis loops, construct Manson-Coffin curves and obtain cyclic material properties in LCF region.