| 复杂流场的激光—超声测试方法及原理性实验研究 |
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| 引用本文： | 宋宙模 陈长乐. 复杂流场的激光—超声测试方法及原理性实验研究[J]. 激光杂志, 1993, 14(4): 179-184 |
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| 作者姓名： | 宋宙模 陈长乐 |
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| 作者单位： | 西北工业大学 西安(宋宙模，陈长乐，庄弘伟，张彬乾，杨永年，王建)，陕西师大声学所 西安(尚志远) |
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| 摘 要： | 本文从复杂流场-旋涡场参量的激光-超声测试方法的需要出发,论述了超声波产生的声位相光栅对激光产生的衍射及偏转特性。在水中进行了声光偏转等试验,测出了产生声光偏转时折射率的变化及声压变化,从而估算出空气复杂流场激光——超声方法所需的超声频率及能量,为实现空气流场激光——超声无接触测试的研究提供了依据。
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| 关 键 词： | 流场 声光偏转 超声测试 激光 |
Laser-ultrasonic method for complicated flow field measurement and its fundamentally exper imental study |
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| Song Zhoumo,Chen Changle. Zhuang Hongwei,Yang Yongnian. Zhang Bingqian,Wang Jian. Laser-ultrasonic method for complicated flow field measurement and its fundamentally exper imental study[J]. Laser Journal, 1993, 14(4): 179-184 |
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| Authors: | Song Zhoumo Chen Changle. Zhuang Hongwei Yang Yongnian. Zhang Bingqian Wang Jian |
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| Abstract: | The properties of diffraction and deflection of laser beem caused by the acoustic phase grating in fluid are described. The experiment of acoustooptic de-flection in water has been done and the changes of refractive index and acoustic pre-ssure have been determined.The basis is set up for the noncontective measurement of air flow field with laser-ultrasonic method. |
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| Keywords: | flow field acoustooptic deflection |
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