| 金属点蚀过程声发射源机制研究 |
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| 引用本文： | 耿荣生, 傅刚强. 金属点蚀过程声发射源机制研究[J]. 声学学报, 2002, 27(4): 369-372. DOI: 10.15949/j.cnki.0371-0025.2002.04.014 |
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| 作者姓名： | 耿荣生 傅刚强 |
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| 作者单位： | 北京航空工程技术研究中心 北京１０００７６(耿荣生)，北京航空工程技术研究中心 北京１０００７６(傅刚强) |
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| 基金项目： | 国家重点基础研究专项经费资助(G19990650) |
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| 摘 要： | 研究了腐蚀特别是点蚀过程产生应力波,即声发射(AE)的源机制,估算了单个钝化膜破裂所产生的薄板表面位移量级,并用实验进行了论证。作者提出,利用板波声发射理论加上参数识别方法,可将腐蚀过程产生的声发射信号同背景噪声相区别。
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| 收稿时间： | 2001-02-12 |
| 修稿时间： | 2001-05-18 |
Studies on the source mechanism of acoustic emission produced by pitting corrosion |
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| GENG Rongsheng, FU Gangqiang. Studies on the source mechanism of acoustic emission produced by pitting corrosion[J]. ACTA ACUSTICA, 2002, 27(4): 369-372. DOI: 10.15949/j.cnki.0371-0025.2002.04.014 |
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| Authors: | GENG Rongsheng FU Gangqiang |
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| Abstract: | Studies have been made on the source mechanism of acoustic emission produced by pitting corrosion.Methods for identifying pitting corrosion-related AE signals were proposed and the magnitude of surface displacement due to single pitting was estimated. It is concluded that differentiation between background noise and corrosion induced genuine AE signal is possible through using plate wave acoustic emission theory combined with parameter identification. |
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