| C/SiC复合材料高温蠕变的声发射特性 |
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| 引用本文： | 方鹏,成来飞,张立同,栾新刚,梅辉.C/SiC复合材料高温蠕变的声发射特性[J].无损检测,2008,30(2):81-83. |
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| 作者姓名： | 方鹏 成来飞 张立同 栾新刚 梅辉 |
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| 作者单位： | 西北工业大学,超高温结构复合材料国防科技重点试验室,西安,710072 |
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| 基金项目： | 国家杰出青年科学基金
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国家自然科学基金重大计划重点项目
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西北工业大学博士生创新基金 |
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| 摘 要： | 利用声发射技术(AE)对C/SiC复合材料高温蠕变试验过程进行动态监测。通过声发射参数分析法对蠕变过程中的声发射累计能量随蠕变时间变化进行了分析;同时对蠕变过程中典型AE信号的频率特征进行了分析,揭示了C/SiC复合材料蠕变损伤的演化过程及规律,给出了材料蠕变损伤发展的不同阶段以及各阶段损伤类型。
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| 关 键 词： | 声发射技术 C/SIC复合材料 蠕变 动态监测 |
| 文章编号： | 1000-6656(2008)02-0081-03 |
| 修稿时间： | 2006年11月13 |
Acoustic Emission Characteristic of C/SiC Composite During Creep at High Temperature |
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| FANG Peng,CHENG Lai-Fei,ZHANG Li-Tong,LUAN Xin-Gang,MEI Hui.Acoustic Emission Characteristic of C/SiC Composite During Creep at High Temperature[J].Nondestructive Testing,2008,30(2):81-83. |
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| Authors: | FANG Peng CHENG Lai-Fei ZHANG Li-Tong LUAN Xin-Gang MEI Hui |
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| Affiliation: | FANG Peng; CHENG Lai-Fei; ZHANG Li-Tong; LUAN Xin-Gang; MEI Hui(National Key Laboratory of Thermostructure Composite Materials; Northwestern Polytechnical University; Xi an 710072; China); |
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| Abstract: | Acoustic emission(AE) was used to inspect the creep test at high temperature in real time. A parameter-analyzing approach was introduced to analyze energy, different damage phases and types of damage by AE data. The spectrum of typical AE signals was analyzed to reveal the damage evolution of C/SiC composite during creep. The mechanism in different stages of damage evolution was also differentiated. |
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| Keywords: | Acoustic emission technique C/SiC composite Creep Dynamic monitoring |
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