Abstract
Rotating beam fatigue tests with three aluminum alloys AL 2024, AL 6061, and AL 7075 at three stress levels were analyzed and compared using Weibull statistical analysis. These fatigue results were also analyzed and compared based on average life and ASTM Standard E739-91 (2004). Based upon Weibull statistical analysis, AL 2024 alloy had the longest fatigue life of the three materials followed in order by AL 7075 and AL 6061. The stress-life exponents n for the 10-percent life L10 were 4.42, 6.57, and 5.84 for AL 2024, AL 6061, and AL7075, respectively. Statistically distinguishing differences between the fatigue lives of AL 7075 and AL 6061 was not possible either using average values of life or median values from ASTM Standard E739-91 (2004). While the minimum number of samples that the ASTM specification recommends may be adequate to establish an S-N relation, it may not be adequate to distinguish differences in fatigue lives with any statistical certainty between two or more materials.
Original language | English |
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Title of host publication | Proceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11 |
Publisher | ISROMAC-11 |
Pages | 622-629 |
Number of pages | 8 |
ISBN (Print) | 9781604236774 |
State | Published - 2006 |
Event | International Symposium on Transport Phenomena and Dynamics of Rotating Machinery - Honolulu, United States Duration: Feb 26 2006 → Mar 2 2006 Conference number: 11 |
Publication series
Name | Proceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11 |
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Volume | 2 |
Conference
Conference | International Symposium on Transport Phenomena and Dynamics of Rotating Machinery |
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Abbreviated title | ISROMAC |
Country/Territory | United States |
City | Honolulu |
Period | 02/26/06 → 03/2/06 |
Scopus Subject Areas
- Mechanical Engineering
Keywords
- Aluminum fatigue life
- ASTM specification
- Rotating shaft fatigue life
- Weibull analysis