RESEARCH ON FATIGUE PROPERTIES OF 7075-T651 ALUMINUM ALLOY CONSIDERING THE EFFECT OF MEAN STRESS
In this study, the effect of average stress on the fatigue properties of 7075-T651 aluminum alloy was studied, and four stress ratios of <italic>R</italic> = 0.5, 0.3, 0.1 and -0.1 were selected for fatigue experiments. The results show that under the same stress ratio, with the increase...
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Editorial Office of Journal of Mechanical Strength
2024-04-01
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| Series: | Jixie qiangdu |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2024.02.025 |
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| author | 俞俊 王宇 李海芳 翁硕 何小田 赵礼辉谢春莉 王伟利 朱佳佳 |
| author_facet | 俞俊 王宇 李海芳 翁硕 何小田 赵礼辉谢春莉 王伟利 朱佳佳 |
| author_sort | 俞俊 |
| collection | DOAJ |
| description | In this study, the effect of average stress on the fatigue properties of 7075-T651 aluminum alloy was studied, and four stress ratios of <italic>R</italic> = 0.5, 0.3, 0.1 and -0.1 were selected for fatigue experiments. The results show that under the same stress ratio, with the increase of the peak stress level, the fatigue life gradually decreases, under the same peak stress level, with the increase of the stress ratio, the fatigue life shows a trend of increasing gradually. At the same time, using the scanning electron microscopy (SEM) to observe the fatigue fracture morphology, it is found that under the same peak stress, the sector area of the crack initiation and propagation zone increases with the inerease of the average stress. Finally, based on the fatigue test results of 7075-T651 aluminum alloy, an improved prediction model considering <italic>S</italic>-<italic>N</italic>-<italic>R</italic> is proposed in this paper. The comparison results show that this model has better prediction effect to a certain extent than other models. |
| format | Article |
| id | doaj-art-8787ea86921e4369ab73098a8c098ef8 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2024-04-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-8787ea86921e4369ab73098a8c098ef82025-01-15T02:45:34ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692024-04-014644645263929894RESEARCH ON FATIGUE PROPERTIES OF 7075-T651 ALUMINUM ALLOY CONSIDERING THE EFFECT OF MEAN STRESS俞俊王宇李海芳翁硕何小田赵礼辉谢春莉王伟利朱佳佳In this study, the effect of average stress on the fatigue properties of 7075-T651 aluminum alloy was studied, and four stress ratios of <italic>R</italic> = 0.5, 0.3, 0.1 and -0.1 were selected for fatigue experiments. The results show that under the same stress ratio, with the increase of the peak stress level, the fatigue life gradually decreases, under the same peak stress level, with the increase of the stress ratio, the fatigue life shows a trend of increasing gradually. At the same time, using the scanning electron microscopy (SEM) to observe the fatigue fracture morphology, it is found that under the same peak stress, the sector area of the crack initiation and propagation zone increases with the inerease of the average stress. Finally, based on the fatigue test results of 7075-T651 aluminum alloy, an improved prediction model considering <italic>S</italic>-<italic>N</italic>-<italic>R</italic> is proposed in this paper. The comparison results show that this model has better prediction effect to a certain extent than other models.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2024.02.0257075-T651 aluminum alloyAverage stressFatigue lifeFracture morphologyPrediction model |
| spellingShingle | 俞俊 王宇 李海芳 翁硕 何小田 赵礼辉谢春莉 王伟利 朱佳佳 RESEARCH ON FATIGUE PROPERTIES OF 7075-T651 ALUMINUM ALLOY CONSIDERING THE EFFECT OF MEAN STRESS Jixie qiangdu 7075-T651 aluminum alloy Average stress Fatigue life Fracture morphology Prediction model |
| title | RESEARCH ON FATIGUE PROPERTIES OF 7075-T651 ALUMINUM ALLOY CONSIDERING THE EFFECT OF MEAN STRESS |
| title_full | RESEARCH ON FATIGUE PROPERTIES OF 7075-T651 ALUMINUM ALLOY CONSIDERING THE EFFECT OF MEAN STRESS |
| title_fullStr | RESEARCH ON FATIGUE PROPERTIES OF 7075-T651 ALUMINUM ALLOY CONSIDERING THE EFFECT OF MEAN STRESS |
| title_full_unstemmed | RESEARCH ON FATIGUE PROPERTIES OF 7075-T651 ALUMINUM ALLOY CONSIDERING THE EFFECT OF MEAN STRESS |
| title_short | RESEARCH ON FATIGUE PROPERTIES OF 7075-T651 ALUMINUM ALLOY CONSIDERING THE EFFECT OF MEAN STRESS |
| title_sort | research on fatigue properties of 7075 t651 aluminum alloy considering the effect of mean stress |
| topic | 7075-T651 aluminum alloy Average stress Fatigue life Fracture morphology Prediction model |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2024.02.025 |
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