| 有机热载体炉积碳层导波检测模态识别研究 |
| |
| 引用本文： | 彭小兰,吴超.有机热载体炉积碳层导波检测模态识别研究[J].振动与冲击,2014,33(3):105-109. |
| |
| 作者姓名： | 彭小兰 吴超 |
| |
| 作者单位： | 1中南大学资源安全工程学院，长沙410083； 2湖南省特种设备检验检测研究院，长沙 410111 |
| |
| 基金项目： | 质检公益性行业科研专项(201210080) |
| |
| 摘 要： | Carbon deposition of organic heat transfer heater is a key factor for the fire risk assessment. In this paper, ultrasonic guided wave was used for the carbon layer detection of organic heat transfer heater. Also, the detection principle and its test system were described. However, due to multi-mode and dispersive nature of ultrasonic guided waves in pipes, time-frequency analysis was used for the identification of ultrasonic guided wave modes for carbon layer inspection. Time-frequency representation of received signal is closed to theoretical dispersion curve of L(0,2) mode. Furthermore, the relative error of experimental group velocity of received signals and theoretical group velocity is only 1.88%~3.48% by time difference method. Therefore, received signals mainly consist of L(0,2) mode. The research results provide a significant theoretical foundation for the carbon layer detection technology of the organic heat transfer heater.（蓝色部分为修改意见1的修改，英文摘要已经重写，实验部分为过去式，实验结果为一般现在时，做到简短、明了和达意）
|
| 关 键 词： | 超声导波 时频分析 有机热载体炉 积碳层 模态 |
| 收稿时间： | 2013-6-26 |
| 修稿时间： | 2013-9-27 |
Study of guided wave mode choice in organic heat transfer heaters for carbon layer detection |
| |
| PENG Xiao-lan,WU Chao.Study of guided wave mode choice in organic heat transfer heaters for carbon layer detection[J].Journal of Vibration and Shock,2014,33(3):105-109. |
| |
| Authors: | PENG Xiao-lan WU Chao |
| |
| Affiliation: | 1 School of Resources and Safety Engineering，Centre South University, Changsha 410083；2 Hunan Special Equipment Inspection & Testing Institute, Changsha, 410111 |
| |
| Abstract: | |
| |
| Keywords: | ultrasonic guided wavetime-frequency analysisorganic heat transfer heatercarbon layermode |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《振动与冲击》浏览原始摘要信息 |
|
点击此处可从《振动与冲击》下载全文 |
|
