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介绍了一种新的激光超声测量技术连续信号激光—超声旋涡测量技术 .用连续波超声信号记录流场参数 (速度 )变化 .其主要优点是 :降低对超声换能器的要求 ;不需要高能量激光光源 ;可以对旋涡流场进行定量的非接触测量 .
A new laser ultrasonic measurement technique, continuous signal laser-ultrasonic vortex measurement technology, is introduced, which uses continuous wave ultrasonic signal to record the change of flow field parameter (velocity) .The main advantages are: to reduce the requirement of ultrasonic transducer; Energy laser light source; Quantitative non-contact measurement of vortex flow field.