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- Title
超声光栅测量液体中声速的改进.
- Authors
叶文江; 李儒颂; 邢红玉; 孙艳梅
- Abstract
In the experiment, ultrasonic grating is often used to measure sound velocity in liquid. Because the number of generated diffraction stripes is small when light wave goes through the ultrasonic grating, the distance measurement the of multistage diffraction stripes cannot been done well done, and also the corrosive liquid cannot been measured. Therefore, some experimental methods and improvement of the instrument design and production are presented The main improvement is to increase a power amplifier to the ultrasonic sensor(piezoelectric ceramic piece) and the ultrasonic bath is made of glass to produce more multistage diffraction fringes. The ultrasonic sensor are gluved outside the glass rectangular ultrasound grooves with coupling agent. All glass ultrasonic grooves and temperature control system is connected to make up of the part instruments to measure viscous coefficient and the temperature sensor on the basis of the traditional steam jet heat meter. The experimental results show that the improved experiment device can not only expand the range of the liquid used in the experiments, but also conveniently study the relationship between velocity and liquid concentration and temperature. Finally, using CCD measuring technology can realize the measurement of ultrasonic velocity automatically, which is in order to reduce the measurement error.
- Publication
Research & Exploration in Laboratory, 2015, Vol 34, Issue 11, p26
- ISSN
1006-7167
- Publication type
Article