Development of dynamic control technology for ultrasound based on sound pressure measurement analysis.

The Ultrasonic System Research Institute has developed a technology that applies the control of ultrasound and fine bubbles within a water tank to stimulate the surfaces of various materials and components with megahertz acoustic flow. In particular, the homogenization of surface residual stress has led to many achievements. << Deaeration Fine Bubble (Microbubble) Generation Liquid Circulation Device >> 1) By narrowing the suction side of the pump, cavitation is generated. 2) Bubbles of dissolved gas are produced due to cavitation. The above describes the state of the deaeration liquid circulation device. ... 6) In a stable and controllable state of ultrasound, the original product: a megahertz ultrasonic oscillation control probe is used to control the oscillation of megahertz (1-20 MHz) ultrasound. The optimization method for cavitation and acoustic flow achieves effective dynamic control of ultrasound by controlling the original nonlinear resonance phenomenon of liquid circulation and megahertz ultrasound. By organizing previous consulting responses, sound pressure measurements, and analyses, we have confirmed various know-how (specific methods related to individual objects and devices) and developed usage methods. If you are interested, please contact us via email.

The Ultrasonic System Research Institute, in collaboration with Japan Barrel Industry Co., Ltd., is implementing a "plating method" utilizing ultrasound and fine bubbles for plating treatment. 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 - Materials: Stainless steel, LCP resin, silicon, Teflon, glass, etc. - Oscillation Equipment: Example - Function Generator Oscillation Method - Control settings are made corresponding to the acoustic characteristics of the target object. - As a result, by controlling the original nonlinear resonance phenomenon, ultrasonic propagation states tailored to the purpose are realized. Based on the measurement, analysis, and evaluation of ultrasonic propagation states, this is a new ultrasonic control technology for precision cleaning, processing, stirring, inspection, etc. <Patent Applications Filed> Patent Application No. 2021-161532: Ultrasonic Plating Patent Application No. 2021-171909: Ultrasonic Processing Patent Application No. 2021-175568: Flow-type Ultrasonic Cleaning Patent Application No. 2023-195514: Ultrasonic Plating Utilizing Megahertz Ultrasound and Fine Bubbles

The Ultrasonic System Research Institute has developed applied technologies that utilize surface acoustic waves through ultrasonic control. By combining ultrasound, fine bubbles, and surface acoustic waves, we achieve dynamic control of ultrasonic propagation. The key point is that using fine bubble flow as a medium for acoustic flow and surface acoustic waves allows for efficient control of nonlinear phenomena in ultrasound. As specific technologies mentioned above, we have developed system technologies that control nonlinear phenomena (bicoherence) resulting from the interaction of ultrasound with water tanks and tools, tailored to specific purposes (cleaning, stirring, stress relief, etc.). As a result of utilizing measurement and analysis techniques for ultrasonic propagation states, we have confirmed the realization of harmonic control and the ability to adjust nonlinear phenomena. The know-how lies in confirming and responding to the system's acoustic characteristics (measurement, analysis, evaluation). Ultrasonic propagation characteristics: 1) Detection of vibration modes (changes in self-correlation) 2) Detection of nonlinear phenomena (changes in bicoherence) 3) Detection of response characteristics (analysis of impulse response) 4) Detection of interactions (analysis of power contribution rates)

The Ultrasonic System Research Institute has developed a technology for measuring, analyzing, and evaluating the propagation state of ultrasound, applying feedback analysis techniques based on multivariate autoregressive models. By organizing the previous measurements, analyses, and results (note) obtained using ultrasonic testers in chronological order, we have confirmed that this can serve as a new evaluation criterion (parameter) indicating the appropriate state of ultrasound for specific purposes. Note: - Nonlinear characteristics - Response characteristics - Fluctuation characteristics - Effects due to interactions By developing original measurement and analysis methods that consider the acoustic properties of the target object and surface elastic waves, referencing the principles of statistical mathematics, we are deepening our new understanding of the relationships of various detailed effects related to vibrational phenomena. As a result, we have confirmed cases where new nonlinear parameters are very effective regarding the propagation state of ultrasound and the surface of the target object. In particular, evaluation cases concerning cleaning, processing, and surface treatment effects have achieved control and improvement based on good confirmations. Ultrasonic propagation characteristics: 1) Detection of vibration modes 2) Detection of nonlinear phenomena 3) Detection of response characteristics 4) Detection of interactions