| 张弓1，臧朝平1，张让威2，李繁1，王晓伟1.基于激光连续扫描的弯曲管路工作变形测试方法[J].航空发动机,2019,45(4):71-74 |
| 基于激光连续扫描的弯曲管路工作变形测试方法 |
| Test Method for Operational Deflection Shape of Curved Pipeline Based on Laser Continuous Scanning |
| |
| DOI： |
| 中文关键词: 弯曲管路 激光多普勒 工作变形 连续扫描 航空发动机 |
| 英文关键词:curved pipeline laser Doppler operational deflection shape continuous scanning aeroengine |
| 基金项目:国家自然科学基金委员会与中国工程物理研究院联合基金（NO.U1730129）、江苏省航天动力系统重点实验 |
|
| 摘要点击次数: 1137 |
| 全文下载次数: 773 |
| 中文摘要: |
| 针对某发动机外部部分弯曲管路的振动测试工作，提出了1 种基于激光多普勒连续扫描的高效测试方法。将线段的坐
标变换引入激光连续扫描，发展了1 种适合弯曲管路的激光连续扫描路径算法，使连续扫描激光振动测试应用于曲线结构，并进
行了试验验证。结果表明：对某发动机外部管路中的弯管进行了曲线激光连续扫描测试，获取了1000 Hz 内的2 阶模态，与商用激
光离散点扫描测试模态振型的相关性在0.9 以上，验证了曲线连续扫描激光多普勒振动测试的可行性和准确性。连续扫描激光测
试的效率高、测点密集，对进一步工程应用具有重要意义。 |
| 英文摘要: |
| An efficient testing method based on laser Doppler continuous scanning was proposed for the vibration test work of an
external part of the curved pipeline of an engine. Coordinate transformation of line segment was introduced laser continuous scanning. A
laser continuous scanning path algorithm was developed for curved pipeline. The continuous scanning laser vibration test was applied to the
curve structure，and the test verification was carried out. The results show that the curve laser continuous scanning test has been carried out
on the pipeline in the external part of the engine，and the second order modes in 1000 Hz has been obtained. The correlation between the
mode shape and the commercial laser discrete point scanning mode shape is above 0.9. The feasibility and accuracy of the vibration test of
the curve continuous scanning laser Doppler are verified. Continuous scanning laser test has high efficiency and dense test points，which is
of great significance for further engineering application. |
| 查看全文 查看/发表评论 下载PDF阅读器 |