| 带粘弹性包覆层管道中的纵向模态 |
| |
| 引用本文： | 刘增华,何存富,吴斌,王秀彦.带粘弹性包覆层管道中的纵向模态[J].机械工程学报,2007,43(4):187-192. |
| |
| 作者姓名： | 刘增华 何存富 吴斌 王秀彦 |
| |
| 作者单位： | 北京工业大学机械工程与应用电子技术学院,北京,100022 |
| |
| 摘 要： | 对带粘弹性包覆层管道中纵向模态的传播特性进行了理论分析,对纵向模态尤其是L(0,2)模态的频散和衰减特性进行研究.在带环氧树脂包覆层钢管中进行激励和接收L(0,2)模态的试验研究.在低频范围下,L(0,2)模态随着频率增加,受环氧树脂层的影响也相应增加,衰减也相应增大.结果表明,对于带有粘弹性包覆层的管道,其衰减频散曲线可用作模态选取的理论指导,用于对管道的缺陷检测.
|
| 关 键 词： | 粘弹性包覆层 管道 纵向模态 频散 衰减 粘弹性包覆层 管道 纵向模态 COATINGS VISCOELASTIC PIPES MODES 缺陷检测 指导 选取 频散曲线 结果 衰减特性 影响 频率 范围 低频 试验 接收 激励 |
| 修稿时间： | 2006年5月14日 |
LONGITUDINAL MODES IN PIPES WITH VISCOELASTIC COATINGS |
| |
| LIU Zenghua,HE Cunfu,WU Bin,WANG Xiuyan.LONGITUDINAL MODES IN PIPES WITH VISCOELASTIC COATINGS[J].Chinese Journal of Mechanical Engineering,2007,43(4):187-192. |
| |
| Authors: | LIU Zenghua HE Cunfu WU Bin WANG Xiuyan |
| |
| Abstract: | Propagation characteristics of longitudinal modes in pipes with viscoelastic coatings are analyzed theoretically. Dis- persion and attenuation characteristics of longitudinal modes, especially L(0, 2) mode, are studied. Excitation and reception of L(0, 2) mode in a steel pipe coated with epoxy are carried out in the experiment. With increasing frequency, the effect of the layer of epoxy on propagation characteristics and the attenua- tion of L(0, 2) mode in low frequency range increases. Results show that attenuation dispersion curves can provide theoretical guidance for mode selection when longitudinal modes are used for defect detection in pipes with viscoelastic coatings. |
| |
| Keywords: | Viscoelastic coating Pipe Longitudinal mode Dispersion Attenuation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
