Ultrasonic propagation control based on technology for measuring and analyzing various interactions of ultrasound.

The Ultrasonic System Research Institute is applying measurement, analysis, and evaluation techniques related to the propagation state of ultrasound to publish technology that relaxes the surface residual stress of ultrasonic transducers using ultrasound and fine bubbles. This technology for relaxing surface residual stress has made it possible to improve fatigue strength against metal fatigue. As a result, the effects on various components, including ultrasonic tanks, have been demonstrated. Ultrasonic Probe: Outline Specifications Measurement Range: 0.01 Hz to 200 MHz Oscillation Range: 1.0 kHz to 25 MHz Propagation Range: 0.5 kHz to over 900 MHz (confirmation of acoustic pressure data analysis) Materials: Stainless steel, LCP resin, silicon, Teflon, glass, etc. Oscillation Equipment: Example - Function Generator Measurement Equipment: Example - Oscilloscope By controlling oscillation, we achieve propagation states tailored to the objectives regarding sound pressure level, frequency, and dynamic characteristics. Ultrasonic Propagation Characteristics 1) Detection of vibration modes (changes in self-correlation) 2) Detection of nonlinear phenomena (changes in bispectrum) 3) Detection of response characteristics (analysis of impulse response) 4) Detection of interactions (analysis of power contribution rates)

The Ultrasonic System Research Institute is applying and developing manufacturing technology for original ultrasonic probes. We have developed technology to optimize the nonlinear vibration phenomenon of surface acoustic waves through oscillation control technology based on the acoustic characteristics of the probes, and we provide consulting services for various ultrasonic utilization technologies. Note 1: Original nonlinear resonance phenomenon The resonance phenomenon of ultrasonic vibrations occurs due to the generation of harmonics resulting from original oscillation control of ultrasonic waves, which achieves high amplitude through resonance. The key point is the optimization of the ultrasonic propagation section. Note 2: By relaxing and homogenizing surface residual stress, stable ultrasonic oscillation control becomes possible. Technology for setting oscillation control conditions: 1) Setting of oscillation waveforms corresponding to the ultrasonic propagation characteristics of the device/equipment. 2) Setting of sweep conditions corresponding to the ultrasonic propagation characteristics of the device/equipment. 3) Setting of output levels corresponding to the ultrasonic propagation characteristics of the device/equipment. 4) Adjustment of various interactions corresponding to the ultrasonic propagation characteristics of the device/equipment.

Application of technology to analyze and evaluate the dynamic characteristics of ultrasound The Ultrasound System Research Institute has developed a method (system) for the analysis and evaluation of ultrasound, utilizing measurement, analysis, and control technology related to the nonlinearity of ultrasound. Using this technology, we are providing on-site support for the additional installation of a degassing fine bubble generation liquid circulation system. To utilize (control) the complex and changing conditions of ultrasound in a stable manner according to the purpose, we offer on-site services to add, install, and confirm sound pressure measurements for the degassing fine bubble generation liquid circulation system in specific tanks present at the site. <Example> *Month* *Day* - Consultation and confirmation via email *Month* *Day* 13:00 - 13:30 - Greetings and meeting 13:30 - 16:30 - Confirmation (simple sound pressure measurement) Setting up the degassing fine bubble generation liquid circulation system Operation explanation Confirmation (sound pressure measurement) 16:30 - 17:00 - Discussion based on sound pressure data 17:00 - 18:00 - Reserve A simple analysis of the measurement data will be conducted. A report including the analysis results of the sound pressure data will be submitted one week later.

<The Reality of Cleaning> 1: Managing cleaning equipment and cleaning solutions is difficult. In the case of cleaning devices that utilize vibrational phenomena as a physical action, the low-frequency vibrational phenomena caused by the installation of the device, along with the device's inherent vibrational phenomena, and the vibrational phenomena of the objects being cleaned and tools interact with each other, resulting in a complex change in the vibrational state. In many cases where cleaning effects are observed, nonlinear vibrational phenomena occur. To confirm nonlinearity and manage it, logical learning and an understanding of vibration measurement are necessary. As for the chemical action of cleaning solutions, in devices that utilize cleaning effects, managing the concentration of detergents is important, but measuring the concentration distribution within the tank is a challenging situation. Various distributions change due to interactions with the environment, such as liquid temperature, humidity, air temperature, and atmospheric pressure. In particular, the distribution of dissolved gas concentration has a significant impact on chemical reactions, but no methods are known to achieve uniform dissolved gas concentration. (Using the diffusivity of fine bubbles is one method.) If detergents are added but only increase the variability of the concentration distribution, it will result in greater variability in cleaning results. ....