On the Use of NASGRO Software to Estimate Fatigue Crack Growth under Variable Amplitude Loading in Aluminium Alloy 2024-T351

• DOI: 10.1016/j.proeng.2015.02.037
• Publication Date: 2015-03-20T08:13:38Z
• Authors: B. Moreno; A. Martin; P. Lopez-Crespo; J. Zapatero; J. Dominguez
• Keywords: Strip yield model; Aluminium alloy 2024-T351; 0203 mechanical engineering; Random loading; aluminium alloy 2024-T351; strip yield model; 02 engineering and technology; NASGRO software; Engineering(all)

Ministerio de Economía y Competitividad DPI2012-33382<br/>Junta de Andalucía TEP-3244<br/>This work uses the strip yield model implemented in NASGRO software to estimate fatigue life under random loading. Simulated results were compared with experimental data previously obtained by the authors using different random loading processes in Al2024-T351. Test data under constant amplitude loading from different authors have been considered in order to characterize the material behaviour and fit the model parameters. The two different strip yield model implemented in NASGRO software were considered. The ratio of simulated to experimental fatigue lives was between 0.71 and 1.52 considering all options and between 0.87 and 1.12 with the best option.<br/>