<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The well-known problem with the fatigue lifetime assessment of non-Gaussian loading signals with the use of spectral method has been presented in the paper. A correction factors that transform the non-Gaussian signal into an equivalent Gaussian signal proposed by Bracessi et al. (2009) has been used for the purpose of lifetime calculations together with Palmgren-Miner Hypothesis. The calculations have been performed for the 10HNAP steel under random non-Gaussian load with four dominating frequencies. The signal has been generated on the test stand SHM250 for random tension-compression tests. The results with zero and non-zero mean stresses have been used to calculate the fatigue life with the frequency domain method based on Dirlik’s model and with a time domain method with the use of the rainflow cycle counting algorithm. The obtained calculation results have been compared with experimental results.</p></abstract>

The well-known problem with the fatigue lifetime assessment of non-Gaussian loading signals with the use of spectral method has been presented in the paper. A correction factors that transform the non-Gaussian signal into an equivalent Gaussian signal proposed by Bracessi et al. (2009) has been used for the purpose of lifetime calculations together with Palmgren-Miner Hypothesis. The calculations have been performed for the 10HNAP steel under random non-Gaussian load with four dominating frequencies. The signal has been generated on the test stand SHM250 for random tension-compression tests. The results with zero and non-zero mean stresses have been used to calculate the fatigue life with the frequency domain method based on Dirlik’s model and with a time domain method with the use of the rainflow cycle counting algorithm. The obtained calculation results have been compared with experimental results.

The Use of Spectral Method for Fatigue Life Assessment for Non-Gaussian Random Loads

Faculty of Mechanical Engineering, Department of Mechanics and Machine Design, Opole University of Technology, ul. Mikołajczyka 5, 45-271 Opole, Poland

Department of Engineering, University of Perugia, via G. Duranti, 93, Perugia, 06125 Italy

Acta Mechanica et Automatica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The well-known problem with the fatigue lifetime assessment of non-Gaussian loading signals with the use of spectral method has been presented in the paper. A...

The Use of Spectral Method for Fatigue Life Assessment for Non-Gaussian Random Loads

Published Online: Jun 08, 2016

Page range: 100 - 103

Received: May 04, 2015

Accepted: May 12, 2016

DOI: https://doi.org/10.1515/ama-2016-0016

Keywords
Spectral Method, Fatigue Life, Random Loading, Non-Gaussian

© 2016 Bialystok University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The Use of Spectral Method for Fatigue Life Assessment for Non-Gaussian Random Loads

Published Online: Jun 08, 2016

Page range: 100 - 103

Received: May 04, 2015

Accepted: May 12, 2016

DOI: https://doi.org/10.1515/ama-2016-0016

KeywordsSpectral Method, Fatigue Life, Random Loading, Non-Gaussian

© 2016 Bialystok University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Spectral Method, Fatigue Life, Random Loading, Non-Gaussian