| 界面断裂韧性的实验研究 |
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| 引用本文： | 蔡昊,嵇醒.界面断裂韧性的实验研究[J].上海力学,1997,18(3):241-247. |
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| 作者姓名： | 蔡昊 嵇醒 |
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| 作者单位： | 同济大学工程力学研究所
(蔡昊，嵇醒)，同济大学工程力学研究所(沈碧霞) |
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| 摘 要： | 本文以铝材与浇注的环氧树脂之间的界面裂纹为研究对象，用三点弯曲和四点弯曲的试验方法，并结合有限元法的数值分析，对双材料界面裂纹的扩展判据，即裂纹扩展的临界能量释放率ＧＣ与相位角ψ↑＾的关系曲线，进行了初步验证。结果表明这一判据基本上是可取的。但是，应该注意界面裂纹的韧性与多种因素有关，实际应用ＧＣ－ψ↑＾曲线时，必须严格区分不同因素。
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| 关 键 词： | 断裂韧性 三点弯曲试验 界面 裂纹扩展判据 |
EXPERIMENTAL STUDY OF INTERFACE FRACTURE TOUGHNESS |
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| Chai Hao Ji Xing and Shen Bixia.EXPERIMENTAL STUDY OF INTERFACE FRACTURE TOUGHNESS[J].Chinese Quarterly Mechanics,1997,18(3):241-247. |
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| Authors: | Chai Hao Ji Xing and Shen Bixia |
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| Abstract: | In this paper, We study the propagation of interface crack between alluminium and epoxy resin by means of FEM and a kind of experimental method-the bending test of three points and the bending test of four points.The experimental results of the critical rate of release of energy, Gc,and the phase angle , which are defined by Rice and Suo ,has been inspected. |
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| Keywords: | interface toughness bending test of three points bending test of four points interfacr crack propagation criterion |
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