| 碳纤维复合材料的超声反射波频域定征分析 |
| |
| 引用本文： | 蒋志峰,刘继忠,吴作伦,吴瑞明.碳纤维复合材料的超声反射波频域定征分析[J].传感技术学报,2007,20(1):118-122. |
| |
| 作者姓名： | 蒋志峰 刘继忠 吴作伦 吴瑞明 |
| |
| 作者单位： | 浙江科技学院机械与汽车工程学院,杭州,310023;南昌大学机电学院,南昌,330029 |
| |
| 基金项目： | 浙江省教育厅资助项目，浙江省自然科学基金 |
| |
| 摘 要： | 对碳纤维复合材料的孔隙率进行超声测试法研究,发现材料前后表面超声回波均值频率偏移量与材料内部孔隙率,与超声信号衰减之间存在着特定关系.提出前后表面回波均值频率偏移特性为基础的超声无损表征方法,通过最小二乘法算法对材料内部孔隙率和超声衰减进行了定量分析,实验结果证明了该方法的实用性.
|
| 关 键 词： | 超声无损检测 复合材料 孔隙率 频率偏移 |
| 文章编号： | 1004-1699（2007）01-0118-05 |
| 收稿时间： | 2006-02-13 |
| 修稿时间： | 2006-03-01 |
Characteristic Analysis Based on Ultrasonic Spectrum of Carbon Fibre Reinforced Composite Materials |
| |
| JIANG Zhi-feng,LIU Ji-zhong,WU Zuo-lun,WU Rui-ming.Characteristic Analysis Based on Ultrasonic Spectrum of Carbon Fibre Reinforced Composite Materials[J].Journal of Transduction Technology,2007,20(1):118-122. |
| |
| Authors: | JIANG Zhi-feng LIU Ji-zhong WU Zuo-lun WU Rui-ming |
| |
| Abstract: | We do research for Ultrasonic spectrum characteristic of the inner void content in carbon-fiber reinforced Composite Materials, finding its average frequency deviation of surface ultrasonic reverberant is relative to void content and ultrasonic attenuation; furthermore, we present a non-destructive testing method based on the average frequency deviation of carbon-fiber reinforced Composite Materials surface ultrasonic reverberant. This method gets the quantitative relation between inner void and ultrasonic attenuation using Method of Least Square,and the results show that the method is valuable. |
| |
| Keywords: | Ultrasonic non-destructive testing Composite material Void content Frequency deviation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《传感技术学报》浏览原始摘要信息 |
|
点击此处可从《传感技术学报》下载全文 |
|
