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| 复合材料单向板断裂韧性的光弹性实验研究 | |
| 引用本文： | 邱新新,常红. 复合材料单向板断裂韧性的光弹性实验研究[J]. 太原科技大学学报, 2011, 32(5): 403-406 |
| 作者姓名： | 邱新新 常红 |
| 作者单位： | 太原科技大学工程力学系,太原,030024 |
| 摘 要： | 结合金属材料三点弯曲试验方法,采用光弹贴片法实测纤维增强复合材料的断裂韧性。简要推导光弹条纹参数与裂尖应力强度因子的关系,并以玻璃纤维增强环氧单向板为实例探讨复合材料断裂韧性测试方法。实验表明,利用光弹图像可以实时观测试件裂纹扩展过程,并可结合P-V曲线判断开裂点,进而得到材料的断裂韧性。 |
| 关 键 词： | 断裂韧性 复合材料 光弹贴片法 三点弯曲试验 |
Determination of Fracture Toughness of Unidirectional Fiber Reinforced Composite by Photoelastic Coating Method |
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| QIU Xin-xin,CHANG Hong. Determination of Fracture Toughness of Unidirectional Fiber Reinforced Composite by Photoelastic Coating Method[J]. Journal of Taiyuan University of Science and Technology, 2011, 32(5): 403-406 | |
| Authors: | QIU Xin-xin CHANG Hong |
| Affiliation: | QIU Xin-xin,CHANG Hong(Department of Engineering Mechanics,Taiyuan University of Science and Technology,Taiyuan 030024,China) |
| Abstract: | Fracture toughness of unidirectional fiber reinforced composite is tested by photoelastic coating method combined with three-points bending test,the relation between the order of the isochromatic fringe and stress intensity factor is derived and the fracture toughness of Glass/epoxy composite plate as an example is easily detected.In this Experiment,a real-time monitoring of crack propagation is realized,and the fracture toughness of unidirectional fiber reinforced composite is effectively analyzed with P-V curve and photoelastic image. |
| Keywords: | fracture toughness composite materials photoelastic-coating method three-points bending test |
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