| 复合材料在DCB试验中的裂纹尺寸效应 |
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| 引用本文： | 于志成,矫桂琼.复合材料在DCB试验中的裂纹尺寸效应[J].航空材料学报,1996,16(4):46-53. |
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| 作者姓名： | 于志成 矫桂琼 |
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| 作者单位： | 北京航空材料研究院，西北工业大学 |
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| 摘 要： | 在许多关于复合材料Ⅰ型层间断裂韧性试验研究工作中，不同的作者所选取的有效裂纹长度有很大的差异，由此带来试验结果分散程度很大，试验结果无法相互比较等问题。本文对复合材料在Ⅰ型层间断裂ＤＣＢ试验中裂纹的预裂长度、裂纹尖端形状以及裂纹测量误差等问题进行了研究。
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| 关 键 词： | 复合材料，断裂韧性，DCB试验，分层 |
THE SIZE EFFECTS OF CRACK IN DCB TEST OF COMPOSITE MATERIALS |
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| Yu Zhicheng.THE SIZE EFFECTS OF CRACK IN DCB TEST OF COMPOSITE MATERIALS[J].Journal of Aeronautical Materials,1996,16(4):46-53. |
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| Authors: | Yu Zhicheng |
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| Abstract: | In many investigations on mode I Interlaminar fracture toughness tests,the effective crack length varied according different workers.The variances of effective crack length induce large scatters of test results and make it difficut to compare data obtained by differen tinvestigators.In this paper,the effects of precrack length,shapes of crack tip and measuring error of crack length on G,c test results were studied. |
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| Keywords: | Composites Fracture toughness DBC Tests Delamination |
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