Effect of Mean Stress on the Fatigue Life Prediction of Notched Fiber-Reinforced 2060 Al-Li Alloy Laminates under Spectrum Loading
This paper presents a study on the fatigue life prediction of notched fiber-reinforced 2060 Al-Li alloy laminates under spectrum loading by applying the constant life diagram. Firstly, a review on the state of the art of constant life diagram models for the life prediction of composite materials is...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/5728174 |
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| author | Weiying Meng Liyang Xie Yu Zhang Yawen Wang Xiaofang Sun Shijian Zhang |
| author_facet | Weiying Meng Liyang Xie Yu Zhang Yawen Wang Xiaofang Sun Shijian Zhang |
| author_sort | Weiying Meng |
| collection | DOAJ |
| description | This paper presents a study on the fatigue life prediction of notched fiber-reinforced 2060 Al-Li alloy laminates under spectrum loading by applying the constant life diagram. Firstly, a review on the state of the art of constant life diagram models for the life prediction of composite materials is given, which highlights the effect on the forecast accuracy. Then, the fatigue life of notched fiber-reinforced Al-Li alloy laminates (2/1 laminates and 3/2 laminates) is tested under cyclic stress, which has different stress cycle characteristics (constant amplitude loading and Mini-Twist spectrum loading). The introduced models are successfully realized based on the available experimental data of examined laminates. In the case of Mini-Twist spectrum loading, the effect of the constant life diagram on the life prediction accuracy of examined laminates is studied based on the rainflow-counting method and Miner damage criteria. The results show that the simple Goodman model and piecewise linear model have certain advantages compared to other complex models for the life prediction of notched fiber metal laminates with different structures under Mini-Twist loading. From the engineering perspective, the S-N curve prediction based on the piecewise linear model is most applicable and accurate among all the models. |
| format | Article |
| id | doaj-art-828fc93fa84646a4b86dc787cec4fc84 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-828fc93fa84646a4b86dc787cec4fc842025-02-03T01:03:47ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/57281745728174Effect of Mean Stress on the Fatigue Life Prediction of Notched Fiber-Reinforced 2060 Al-Li Alloy Laminates under Spectrum LoadingWeiying Meng0Liyang Xie1Yu Zhang2Yawen Wang3Xiaofang Sun4Shijian Zhang5Institute of Modern Design and Analysis, College of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, ChinaInstitute of Modern Design and Analysis, College of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, ChinaSchool of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, ChinaDepartment of Mechanical and Aerospace Engineering, University of Texas at Arlington, Arlington, TX 76019, USACollege of Science, Shenyang Jianzhu University, Shenyang 110168, ChinaInstitute of Modern Design and Analysis, College of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, ChinaThis paper presents a study on the fatigue life prediction of notched fiber-reinforced 2060 Al-Li alloy laminates under spectrum loading by applying the constant life diagram. Firstly, a review on the state of the art of constant life diagram models for the life prediction of composite materials is given, which highlights the effect on the forecast accuracy. Then, the fatigue life of notched fiber-reinforced Al-Li alloy laminates (2/1 laminates and 3/2 laminates) is tested under cyclic stress, which has different stress cycle characteristics (constant amplitude loading and Mini-Twist spectrum loading). The introduced models are successfully realized based on the available experimental data of examined laminates. In the case of Mini-Twist spectrum loading, the effect of the constant life diagram on the life prediction accuracy of examined laminates is studied based on the rainflow-counting method and Miner damage criteria. The results show that the simple Goodman model and piecewise linear model have certain advantages compared to other complex models for the life prediction of notched fiber metal laminates with different structures under Mini-Twist loading. From the engineering perspective, the S-N curve prediction based on the piecewise linear model is most applicable and accurate among all the models.http://dx.doi.org/10.1155/2018/5728174 |
| spellingShingle | Weiying Meng Liyang Xie Yu Zhang Yawen Wang Xiaofang Sun Shijian Zhang Effect of Mean Stress on the Fatigue Life Prediction of Notched Fiber-Reinforced 2060 Al-Li Alloy Laminates under Spectrum Loading Advances in Materials Science and Engineering |
| title | Effect of Mean Stress on the Fatigue Life Prediction of Notched Fiber-Reinforced 2060 Al-Li Alloy Laminates under Spectrum Loading |
| title_full | Effect of Mean Stress on the Fatigue Life Prediction of Notched Fiber-Reinforced 2060 Al-Li Alloy Laminates under Spectrum Loading |
| title_fullStr | Effect of Mean Stress on the Fatigue Life Prediction of Notched Fiber-Reinforced 2060 Al-Li Alloy Laminates under Spectrum Loading |
| title_full_unstemmed | Effect of Mean Stress on the Fatigue Life Prediction of Notched Fiber-Reinforced 2060 Al-Li Alloy Laminates under Spectrum Loading |
| title_short | Effect of Mean Stress on the Fatigue Life Prediction of Notched Fiber-Reinforced 2060 Al-Li Alloy Laminates under Spectrum Loading |
| title_sort | effect of mean stress on the fatigue life prediction of notched fiber reinforced 2060 al li alloy laminates under spectrum loading |
| url | http://dx.doi.org/10.1155/2018/5728174 |
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