| Issue |
MATEC Web Conf.
Volume 300, 2019
ICMFF12 - 12th International Conference on Multiaxial Fatigue and Fracture
|
|
|---|---|---|
| Article Number | 11001 | |
| Number of page(s) | 8 | |
| Section | Mixed-Mode | |
| DOI | https://doi.org/10.1051/matecconf/201930011001 | |
| Published online | 02 December 2019 | |
Life-time prediction for aviation GTE compressor disk based on mixed-mode and multi-axial fracture resistance parameters
FRC Kazan Scientific Center of Russian Academy of Sciences, 420111 Kazan, Russia
* Corresponding author: shlyannikov@mail.ru
This study is concerned with analysis of fatigue crack growth and life-time prediction for aviation GTE compressor disk under operation conditions. For consideration were different combinations of rotational speed, temperature, surface flaw form and sizes as well as elastic-plastic titanium alloy BT3-1 properties are employed. A crack growth rate equation is derived involving the fracture process zone size and nonlinear stress intensity factor. The assessments of the structural integrity of the rotating disk are compared for elastic and elastic-plastic solutions. It is stated that the traditional elastic crack growth models overestimate the residual fatigue lifetime with respect to the nonlinear fracture mechanics approach.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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