Development of ultrasonic cleaning technology using sweep oscillation and pulse oscillation.

The Ultrasonic System Research Institute has developed ultrasonic system technology that enables the control of ultrasonic propagation states above 900 MHz by utilizing a megahertz ultrasonic oscillation control probe for ultrasonic equipment. This is a new application technology based on the measurement, analysis, evaluation, and techniques of ultrasonic propagation states, applicable to precision cleaning, processing, stirring, welding, plating, and more. By utilizing the acoustic properties (surface elastic waves) of various materials, ultrasonic stimulation of several tons of objects can be controlled even in a 5000-liter water tank with an ultrasonic output of 20W or less. It was developed as an application method for nonlinear phenomena through an engineering (experimental and technical) perspective on elastic waves and an abstract algebraic ultrasonic model. We believe it can be utilized in various fields, and we are conducting proposals using original ultrasonic probes in various consulting services. Ultrasonic Probe: Outline Specifications - Measurement Range: 0.01 Hz to 200 MHz - Oscillation Range: 0.5 kHz to 25 MHz - Propagation Range: 1 kHz to over 900 MHz (confirmation of sound pressure data analysis) - Materials: Stainless steel, LCP resin, silicon, Teflon, glass, etc.

The Ultrasonic System Research Institute has developed a technology to utilize (control) "nonlinear phenomena related to the generation of harmonics in ultrasound" by analyzing ultrasonic sound pressure measurement data (bispectral analysis, etc.) according to specific objectives. With this technology, when using multiple ultrasonic transducers with different frequencies, it becomes possible to set (manage) the propagation state of ultrasound influenced by harmonics. Therefore, it is possible to achieve appropriate or effective combinations of frequencies. This is very effective as it allows for the detection and confirmation of effective propagation states for cleaning, surface modification, and the promotion of chemical reactions. Furthermore, by combining the control of standing waves with the control of liquid circulation, dynamic control becomes possible to change the effects of cavitation and acceleration (acoustic flow) according to specific objectives. Through original measurement and analysis technology for ultrasonic propagation states, we have confirmed numerous effective cases related to the surface conditions of various components, including cleaning, stirring, surface modification, and chemical reactions.

The Ultrasonic System Research Institute has developed an ultrasonic oscillation control probe based on the acoustic properties of glass containers. By confirming the basic acoustic characteristics (response characteristics, propagation characteristics) depending on the shape and material of each container, it enables the desired ultrasonic propagation state through oscillation control (output, waveform, oscillation frequency, variations, etc.). The key point is to evaluate the dynamic vibration characteristics of the system based on the measurement and analysis of sound pressure data. We are establishing and confirming new evaluation criteria (parameters) that indicate the suitable state of ultrasound for the purpose. Note: - Nonlinear characteristics (dynamic characteristics of harmonics) - Response characteristics - Characteristics of fluctuations - Effects due to interactions By developing original measurement and analysis methods that consider the acoustic properties and surface elastic waves of the target object, referencing the ideas of statistical mathematics, we have developed a new technology regarding the relationships of various detailed effects related to vibration phenomena. The specific conditions for oscillation control are determined based on experimental confirmation, as they are also influenced by the characteristics of ultrasonic probes and oscillation equipment. As a result, there are increasing examples and achievements demonstrating that the new nonlinear parameters are very effective.

The Ultrasonic System Research Institute has developed ultrasonic cleaning technology that enables control of acoustic flow (ultrasonic propagation state) in the range of 1-100 MHz for portable ultrasonic cleaners. This is a new application technology for precision cleaning, processing, and stirring based on the measurement, analysis, evaluation, and technology of ultrasonic propagation states. By utilizing the acoustic properties (surface elastic waves) of various materials, ultrasonic stimulation can be controlled with an output of less than 20W, even in a 1000-liter water tank. It was developed as an application method for nonlinear phenomena through an engineering (experimental and technical) perspective on elastic wave propagation and an abstract algebraic ultrasonic model. The key point is the use of tools (elastic bodies: metal, glass, resin). By confirming the propagation characteristics of ultrasonic waves based on the conditions of the target object, it is important to address it as an original nonlinear resonance phenomenon (Note 1). Note 1: Original Nonlinear Resonance Phenomenon This occurs due to the generation of harmonics resulting from original oscillation control, which is realized at high amplitudes through resonance phenomena, leading to ultrasonic vibration resonance phenomena.