| 钛合金高温疲劳性能的试验研究 |
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| 引用本文： | 陶佳跃, 周亚东, 张培伟, 费庆国. 钛合金高温疲劳性能的试验研究[J]. 工程力学, 2016, 33(4): 250-256. DOI: 10.6052/j.issn.1000-4750.2014.09.0766 |
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| 作者姓名： | 陶佳跃 周亚东 张培伟 费庆国 |
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| 作者单位： | 1.东南大学工程力学系, 南京 210096;;2.江苏省工程力学分析重点实验室, 南京 210096 |
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| 基金项目： | 教育部新世纪优秀人才支持计划项目(NCET-11-0086);国家自然科学基金项目(10902024,11202050);江苏省普通高校研究生科研创新计划项目(KYLX_0093) |
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| 摘 要： | 开展了钛合金材料高温疲劳试验研究。试验共设计3种工况,即:200℃,0.5kN-22.5kN-0.5kN力加载循环;300℃,0.5kN-22.5kN-0.5kN力加载循环;200℃,0.5kN-30kN-0.5kN力加载循环,每种工况下分配试样数为5个~7个。引入
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| 关 键 词： | 钛合金 高温疲劳试验 正态分布模型 中值疲劳寿命 疲劳安全寿命 |
| 收稿时间： | 2014-09-11 |
| 修稿时间： | 2014-12-19 |
EXPERIMENTAL STUDY On HIGH TEMPERATURE FATIGUE PROPERTIES OF TITANIUM ALLOYS |
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| TAO Jia-yue, ZHOU Ya-dong, ZHANG Pei-wei, FEI Qing-guo. EXPERIMENTAL STUDY On HIGH TEMPERATURE FATIGUE PROPERTIES OF TITANIUM ALLOYS[J]. Engineering Mechanics, 2016, 33(4): 250-256. DOI: 10.6052/j.issn.1000-4750.2014.09.0766 |
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| Authors: | TAO Jia-yue ZHOU Ya-dong ZHANG Pei-wei FEI Qing-guo |
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| Affiliation: | 1.Department of Engineering Mechanics Southeast University, Nanjing 210096, China;;2.Jiangsu Key Laboratory of Engineering Mechanics, Nanjing 210096, China |
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| Abstract: | Considering the high-temperature fatigue test for titanium alloy in three experimental conditions, namely 200℃, 0.5 kN-22.5 kN-0.5 kN testing condition, 300℃, 0.5 kN-22.5 kN-0.5 kN testing condition, and 200℃, 0.5 kN-30 kN-0.5 kN testing condition, each condition was assigned to the number of 5 to 7. By the introduction of the “Chauvenet Criterion”, the test aborts the suspicious test point, and the result of the life distribution model examination is that the effective data follows a normal distribution model. On the basis of test data, the paper calculates the value of the median fatigue life and the fatigue safe life corresponding to the survival rate of 99.9%, which can be used in different project requirements. |
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| Keywords: | titanium alloy high-temperature fatigue test normal distribution model median fatigue life fatigue safe life |
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