Effect Of Cavitation Noise In Ultrasonic Cleaning On Neurobehavioral Function Of Mice

Ultrasonic cleaning technology has lots of advantages, and now it's widely used in many fields, such as cars, electronics , aeronautics and astronautics , chemical industry and medicine, etc. It can raise productivity and lower labor cost effectively. The main cleaning mechanism is based on acoustic cavitation in a cleaning liquid, and this decides that ultrasonic cleaning must be followed along with noise. Moreover, most ultrasonic cleaners are operated at the frequency range of 20-40 kHz, in this range, we can get high cavitation intensity, but the noise caused by cavitation is also high, which bring pollution to the working environment. Reports have shown that ultrasonic cleaning noise contains largely supra-acoustic frequency components, and human body is especially sensitive to high-frequency noise. Therefore, the characteristics of ultrasonic cleaning noise differ from audio noise, such as traffic noise, white noise and textile noise, etc, and their biological effects may also be different. Nowadays, studies on biological effects of noise are mostly focused on the effect of audio noise, but studies of the effect of ultrasonic cleaning noise on human haven't been found yet. Neurobehavioral function is dominated by advanced nervous system, and is the most important psychological function of human body. Furthermore, when nervous system is injured, neurobehavioral function will work changes. So, in this paper, characteristics of ultrasonic cleaning noise and changes caused by ultrasonic cleaning noise exposure of neurobehavioral function of mice are studied. With the development of ultrasonic cleaning technology , this study has great sense in revealing the harm of ultrasonic cleaning noise , improving working environment and taking further noise reduction measures.In detail, following work has been done in this paper and several results are concluded:1 , Spectra of ultrasonic cleaning noise are measured by two methods, and the influence of working frequency on noise spectra is analyzed. The results show that noise spectrum of each ultrasonic cleaner contains not only audio components, but also largely high-frequency components. Furthermore, some harmonics and subharmonics...