Basic Research System on Ultrasonic Cleaning

The Ultrasonic System Research Institute conducts consulting related to ultrasonic applications using a technology that measures, analyzes, and evaluates the propagation state of ultrasound, applying feedback analysis techniques based on multivariate autoregressive models. By organizing the measurements, analyses, and results obtained from ultrasonic testers chronologically, we establish and verify new evaluation criteria (parameters) that indicate the appropriate ultrasonic state for the intended purpose. Note: - Nonlinear characteristics (dynamic characteristics of acoustic flow) - 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, we deepen our understanding of the relationships between various effects related to vibration phenomena, referencing statistical mathematical concepts. As a result, there is an increasing number of cases demonstrating that new nonlinear parameters are very effective regarding the propagation state of ultrasound and the surface of the target object. In particular, evaluation cases related to cleaning, processing, and surface treatment effects lead to successful control and improvement based on favorable confirmations.

The Ultrasonic System Research Institute has developed a liquid circulation technology for ultrasonic cleaners that utilizes the "Constructal Law" related to flow and shape (control of nonlinear phenomena). This was developed with inspiration from observations of river flows, as shown in the attached photo. Regarding the use of ultrasound, we believe that through our experience in observing flow, we can intuitively grasp acoustic flow (a nonlinear phenomenon of ultrasound). Acoustic flow <General Concept> When finite amplitude waves propagate through a gas or liquid, acoustic flow occurs. Acoustic flow is a unidirectional steady flow of matter that arises either as a result of viscous losses from wave pulses in a free inhomogeneous field, or in the vicinity of obstacles (cleaning objects, fixtures, liquid circulation) within an acoustic field, or near vibrating bodies due to inertial losses. Using the above as a reference and hint, we organize the technology for measuring, analyzing, evaluating, and utilizing (controlling) "nonlinear phenomena" in ultrasonic propagation phenomena through the "Constructal Law," which improves flow, thereby consolidating it into ultrasonic technology.

The Ultrasonic System Research Institute has developed a new component inspection technology using megahertz ultrasonic oscillation based on its track record of analyzing ultrasonic data propagating on the surface of objects. This method applies the measurement and analysis technology of "sound pressure and vibration" through the control of original ultrasonic probe oscillation. We provide consulting and explanations of ultrasonic evaluation technology through the development of ultrasonic probes tailored to the purpose (vibration modes propagating on the surface of objects). This is an application of new ultrasonic oscillation control technology. By utilizing nonlinear phenomena related to megahertz ultrasonic propagation states that match the acoustic characteristics of the target object, it is possible to detect new features regarding the surface condition of the object. In particular, this fundamental technology serves as a new evaluation parameter for ultrasonic vibrations, utilized in surface inspection of substrate components and pre-evaluation of precision cleaning parts, leveraging the response characteristics derived from combinations of oscillation and reception. By measuring, analyzing, and evaluating the dynamic characteristics of ultrasonic waves related to the propagation phenomena of surface elastic waves, we have enabled effective use tailored to the purpose (evaluation) through the construction and modification of logical models.

The Ultrasonic System Research Institute has developed an ultrasonic oscillation control probe using components coated with iron on polyimide film. By applying this technology, we provide consulting services for "ultrasonic and vibration measurement, propagation control..." for various curved surfaces. Ultrasonic Probe: Overview Specifications Measurement Range: 0.01 Hz to 100 MHz Oscillation Range: 1 kHz to 25 MHz Propagation Range: 1 kHz to over 900 MHz Materials: Stainless steel, LCP resin, silicon, Teflon, glass... Oscillation Equipment Example: Function Generator By understanding the acoustic characteristics of the target object and installation conditions, we have achieved dynamic control of surface elastic waves (propagation state). We realize propagation states tailored to various purposes (cleaning, stirring, etc.). 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)