| 复合材料连接挤压破坏的声发射分析及挤压强度确定 |
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| 引用本文： | 汪裕炳,毛成德,冼杏娟.复合材料连接挤压破坏的声发射分析及挤压强度确定[J].航空学报,1987,8(3):216-220. |
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| 作者姓名： | 汪裕炳 毛成德 冼杏娟 |
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| 作者单位： | 1. 北京航空工艺研究所;2. 科学院力学所 |
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| 摘 要： | 随着我国航空事业的发展,飞行器设计中已愈来愈多地采用先进的碳/环氧复合材料结构。挤压破坏是复合材料机械连接的主要破坏形式。分析其破坏过程,确定出挤压强度,对解决复合材料连接设计问题是非常重要的。 实践表明,测定复合材料构件所能承受的最大挤压应力较易进行,一般均能获得所需结果。但对设计人员来说,更加关心的是许用挤压应力。金属材料许用挤压应力通常是由屈服应力决定的。对于不存在“屈服”点的碳/环氧复合材料确定许用挤压应力,目
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| 收稿时间： | 1986-05-10; |
THE ACOUS IC EMISSION ANALYSIS OF BEARING FAILURE AND THE DETERMINATION OF BEARING STRENGTH IN COMPOSITE MATERIAL JOINTS |
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| Wang Yubin,Mao Chengde,Xian Xingjuan.THE ACOUS IC EMISSION ANALYSIS OF BEARING FAILURE AND THE DETERMINATION OF BEARING STRENGTH IN COMPOSITE MATERIAL JOINTS[J].Acta Aeronautica et Astronautica Sinica,1987,8(3):216-220. |
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| Authors: | Wang Yubin Mao Chengde Xian Xingjuan |
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| Institution: | 1. Beijing Aeronautical Technology Institute;2. Institute of Mechanics, Academin Sinica |
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| Abstract: | This paper studies the bearing failure of bolted joints for three typical plying composite materials using the acoustic emission technique, and gives a method to determine intial beariag failure stress with the aid of the acoustic emission plot and the load-- displacement curve. This stress can be determined conveniently even if the first peak value of the !oad-displacement curve is very unclear. |
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