Evaluation of Low-Cycle Fatigue Tests using Python

Abstract

This thesis is focused on the evaluation of Low Cycle Fatigue tests conducted on a special type of aluminium alloy – AlSi10Mg. Python is chosen as the tool for evaluation of the test data. Two variants of specimens are fabricated from different 3D printers – Renishaw AM400 and Trumpf Truprint 1000. The specimens printed by Renishaw AM400, designed according to the standard ASTM E2207, are used in both strain-controlled tests and stress-controlled tests. The specimens printed by Trumpf Truprint 1000, according to the standard ISO 12106:2017 are used only for strain-controlled tests. Sixteen fatigue tests were performed in total at room temperature on the LabControl 100kN/1000Nm hydraulic testing machine at the Faculty of Mechanical Engineering in the VSB-Technical University of Ostrava. The structure of the python code is presented as flowcharts. The evaluated data is presented in the form of plots categorized by the printers. Cyclic softening behaviour is observed in specimens printed by Renishaw AM400. Specimens printed by Trumpf Truprint 1000 printer show cyclic hardening behaviour. Output files are generated which can be used for further analysis. Transition number of cycles to failure of both variants of the material are determined.