| 基于声发射检测技术的PE/PE自增强复合材料破损机理分析 |
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| 引用本文： | 张同华,杨璧玲,彭永超,晏雄.基于声发射检测技术的PE/PE自增强复合材料破损机理分析[J].材料工程,2007(1):56-59,64. |
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| 作者姓名： | 张同华 杨璧玲 彭永超 晏雄 |
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| 作者单位： | 东华大学,纺织学院,上海,201620 |
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| 摘 要： | 用声发射(AE)技术研究了聚乙烯自增强复合材料的拉伸损伤与断裂行为.宽带传感器记录了不同角度纤维铺层的复合材料试样在拉伸破坏过程中的声发射信号,用扫描电子显微镜(SEM)观察了试样的几种典型的损伤破坏断面,对比分析了不同类型的损伤机制.实验分析表明,拉伸过程中破坏机制对声发射信号的特征具有显著影响,不同损伤模式的信号频谱特征存在明显的差异.声发射检测能有效提取热塑性复合材料损伤破坏信息,在材料的结构损伤主动监测中有良好的应用潜力.
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| 关 键 词： | 声发射检测 PE/PE复合材料 FFT分析 损伤模式 声发射检测 检测技术 增强复合材料 破损 机理分析 Damage Mechanism Analysis Technique Acoustic Emission Based 应用 主动监测 结构损伤 信息 损伤破坏 热塑性复合材料 提取 差异 存在 频谱特征 |
| 文章编号： | 1001-4381（2007）01-0056-04 |
| 修稿时间： | 2006-06-052006-12-06 |
Analysis on Damage Mechanism of PE/PE Self-reinforced Composite Based on Acoustic Emission Technique |
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| ZHANG Tong-hua,YANG Bi-ling,PENG Yong-chao,YAN Xiong.Analysis on Damage Mechanism of PE/PE Self-reinforced Composite Based on Acoustic Emission Technique[J].Journal of Materials Engineering,2007(1):56-59,64. |
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| Authors: | ZHANG Tong-hua YANG Bi-ling PENG Yong-chao YAN Xiong |
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| Affiliation: | College of Textiles, Donghua University, Shanghai 201620, China |
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| Abstract: | Damage and fracture behavior of self-reinforced polyethylene (PE) composite under monotonic tensile loading were investigated by acoustic emission (AE) technique. AE signals released from different lay-ups composite specimens were acquired by a wideband transducer, and fracture surfaces of the specimens were observed by scanning electron microscope (SEM). Experimental results showed that the composites exhibited multiple damage modes and the characteristics of AE signals were remarkably affected by damage mechanism. AE technique is applicable in acquiring the damage information of thermoplastic composites effectively. |
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| Keywords: | AE testing PE/PE composite material FFT analysis damage mode |
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