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| 压力容器上声发射源的新型定位方法 | |
| 引用本文： | 龚斌,金志浩,包日东,闻邦椿.压力容器上声发射源的新型定位方法[J].压力容器,2005,22(6):13-14,54. |
| 作者姓名： | 龚斌 金志浩 包日东 闻邦椿 |
| 作者单位： | 1. 东北大学,机械工程与自动化学院,辽宁,沈阳,110004;沈阳化工学院,辽宁,沈阳,110142 2. 沈阳化工学院,辽宁,沈阳,110142 3. 东北大学,机械工程与自动化学院,辽宁,沈阳,110004 |
| 基金项目： | 国家自然科学基金资助项目(50075010)。 |
| 摘 要： | 压力容器裂纹扩展时产生的弹性波在传播时声压遵从指数衰减规律,本文提出一种利用声衰减对声发射源进行源定位的新方法。用AE21C型声发射仪对自制的小型高分子合成纤维材料容器以铅笔芯折断产生信号为模拟源进行了实验测量,证明这种新的源定位方法可行,并具有无须测量传播介质衰减特性、无须测量声速等优点。 |
| 关 键 词： | 声发射 声衰减 源定位 |
| 文章编号： | 1001-4837(2005)06-0013-02 |
Application of Acoustic Attenuation in Abrupt Acoustic Emission Source Location |
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| Gong Bin,JIN Zhi-hao,BAO Ri-dong,WEN Bang-chun.Application of Acoustic Attenuation in Abrupt Acoustic Emission Source Location[J].Pressure Vessel Technology,2005,22(6):13-14,54. | |
| Authors: | Gong Bin JIN Zhi-hao BAO Ri-dong WEN Bang-chun |
| Affiliation: | GONG Bin~1,2,JIN Zhi-hao2,BAO Ri-dong~1,2,WEN Bang-chun1 |
| Abstract: | In this paper,a method by using acoustic attenuation to conduct source location for abrupt acoustic emission source location is put forward,based on exponential attenuation principal of sound pressure for elastic waves propagation in acoustic emission. And then specific illustration of linear location is set as example. Wood block as transmission media is applied for experimental measurement,and using AE21C acoustic emission instrument. The feasibility of this new method of source location is proved. It doesn't need measure speed of sound,and also considering attenuation character and so on. |
| Keywords: | acoustic emission acoustic attenuation source location |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |