Probabilistic Fatigue Crack Growth in Compact Tension Specimens from FSWed 7075-T651 Aluminum Alloys

Abstract:

The process of fatigue crack growth is generally random nature, due to many sources of variability, such as external loading, material properties and geometry conditions. Therefore is is important to investigate the statistical variability of fatigue crack growth in order to development the methodology for probabilistic fatigue crack growth life prediction. This paper is concerned with the randomness investigation of fatigue crack growth for the FSWed 7075-T651 aluminum alloys. In this investigation, the fatigue crack growth tests were conducted for five compact tension (CT) specimens of the FSWed 7075-T651 aluminum alloys, base metal (BM), heat affected zones (HAZ) and weld metal (WM), especially three different constant stress intensity factor range (SIFR) controls.

• Periodical: Applied Mechanics and Materials (Volumes 152-154)
• Pages: 293-296
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.152-154.293
• Online since: January 2012
• Authors: Seon Jin Kim, Yeui Han Jeong, Hye Jeong Sohn
• Keywords: 7075-T651 Aluminum Alloy, Friction Stir Welding (FSW), Probabilistic Fatigue Crack Growth, Random Nature, Statistical Variability

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