Open AccessFracture curves for mixed modes loading
Author(s) -
Rozumek Dariusz
Publication year - 2019
Publication title -
material design & processing communications
Language(s) - English
Resource type - Journals
ISSN - 2577-6576
DOI - 10.1002/mdp2.89
Subject(s) - mode (computer interface) , mixed mode , materials science , bending , torsion (gastropod) , composite material , tension (geology) , fracture (geology) , structural engineering , work (physics) , mechanics , physics , thermodynamics , engineering , ultimate tensile strength , medicine , surgery , operating system , computer science
The paper presents the results of experimental tests on the fatigue crack growth under tension and bending with torsion. The tests were performed for different ratios of mode I and mode II and mode I and mode III with use of parameter ΔJ. Plane specimens with stress concentrators factor were tested. In the case of mixed mode I + II, the results of the experiment shift in the direction the mode II and in the case of the mixed mode I + III in the direction the mode I. The work compared curves based on the energy parameter ΔJ and the parameter ΔK (elliptical formula) with the test results. The fracture curves obtained from experiments and calculations allow to plot the fracture surfaces for a given material and three mixed modes.