| 定向有机玻璃疲劳断裂性能的频闪法研究 |
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| 引用本文： | 计欣华,尚伟,陈金龙,秦玉文. 定向有机玻璃疲劳断裂性能的频闪法研究[J]. 实验力学, 2011, 26(5): 532-539 |
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| 作者姓名： | 计欣华 尚伟 陈金龙 秦玉文 |
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| 作者单位： | 天津大学力学系,天津,300072 |
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| 摘 要： | 疲劳裂纹扩展前应力集中区域变形场的测试对材料疲劳性能的研究起到至关重要的作用.但由于疲劳试验为动态的过程,在动态下测量比在静态下要复杂得多,这样就给变形场的测量带来了困难.通过调节频闪光源的频率使其与疲劳试验机的频率相同,可把此动态过程转换为准静态过程,采集不同循环周期内的相同时刻的灰度图像,并运用数字图像频域相关分析...
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| 关 键 词： | 疲劳断裂 频闪法 数字图像频域相关分析法 定向有机玻璃 |
On the Fatigue Fracture Properties of Directional PMMA Based on Stroboscopic Method |
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| JI Xin-hu,SHANG Wei,CHEN Jin-long and QIN Yu-wen. On the Fatigue Fracture Properties of Directional PMMA Based on Stroboscopic Method[J]. Journal of Experimental Mechanics, 2011, 26(5): 532-539 |
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| Authors: | JI Xin-hu SHANG Wei CHEN Jin-long QIN Yu-wen |
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| Affiliation: | JI Xin-hua,SHANG Wei,CHEN Jin-long,QIN Yu-wen(Department of Mechanics,Tianjin University,Tianjin 300072,China) |
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| Abstract: | The deformation testing in stress concentration area before fatigue crack propagation plays a crucial role for understanding the fatigue properties of materials.However,fatigue testing is more complex due to its dynamic process,so it makes the deformation measuring quite difficult.By adjusting the frequency of stroboscopic light source consistent with fatigue tester,the original dynamic process of fatigue testing may be transformed into a quasi static one.Digital image correlation method in frequency domain... |
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| Keywords: | fatigue fracture stroboscopic method digital image correlation method in frequency domain directional PMMA(Polymethylmethacrylate Acrylic) |
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