| 2A50锻铝三点弯曲试验与高分辨率CT成像分析 |
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| 引用本文： | 敖波,邓翠贞,邬冠华.2A50锻铝三点弯曲试验与高分辨率CT成像分析[J].材料工程,2011(5):13-16. |
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| 作者姓名： | 敖波 邓翠贞 邬冠华 |
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| 作者单位： | 南昌航空大学,无损检测技术教育部重点实验室,南昌,330063 |
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| 基金项目： | 航空科学基金资助项目(20090756001) |
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| 摘 要： | 采用高频疲劳试验机对2A50锻铝缺口试样进行了三点弯曲试验,获得了含裂纹的CT检测试样.对疲劳试样进行了高分辨率CT三维重建,分析了裂纹CT图像的损伤特点;引入了参考平面,将不同层的裂纹CT图像映射到参考平面定义了截面损伤危险度因子.CT分析结果表明:裂纹扩展过程中不同部位的疲劳损伤不均匀,三维可视化结果直观显示了裂纹...
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| 关 键 词： | 疲劳裂纹 三点弯曲试验 高分辨率CT 可视化 危险度因子 |
Three-point Bending Test of 2A50 Forging Aluminum and Analysis by High-resolution Computed Tomography |
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| AO Bo,DENG Cui-zhen,WU Guan-hua.Three-point Bending Test of 2A50 Forging Aluminum and Analysis by High-resolution Computed Tomography[J].Journal of Materials Engineering,2011(5):13-16. |
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| Authors: | AO Bo DENG Cui-zhen WU Guan-hua |
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| Affiliation: | AO Bo,DENG Cui-zhen,WU Guan-hua(Key Laboratory of Nondestructive Testing(Ministry of Education),Nanchang Hangkong University,Nanchang 330063,China) |
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| Abstract: | Three-point bending test of notched specimens of 2A50 forging aluminum was carried out by high frequency fatigue tester,specimens of computed tomography(CT) which contain fatigue crack were obtained.Fatigue specimen was reconstructed by high-resolution CT,CT images of crack were analysed;a reference plane was introduced,crack was projected on the reference plane in all CT images,and a damage risk factor was proposed.Results show that the damage of fatigue is uneven in different regions,the three-dimensional... |
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| Keywords: | fatigue crack three-point bending test high-resolution CT visualization risk factor |
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