Surface modification technology through nonlinear oscillation control of ultrasound (stress relaxation and uniformity).

The Ultrasonic System Research Institute has developed a technology that efficiently alleviates surface residual stress in components by controlling the nonlinear propagation state of ultrasound, utilizing the acoustic characteristics of the target objects through measurement, analysis, and control techniques related to the propagation state of ultrasound. With this technology to alleviate surface residual stress, it has become possible to improve the fatigue strength against metal fatigue. In particular, by considering the guided waves (surface elastic waves) of the target object in the settings of the ultrasound propagation state, we have developed control methods and tools that realize effective nonlinear stimulation to the target object. We have confirmed a wide range of effects on various types of metal parts, resin parts, and powder materials. This technology is offered as a consulting service. Ultrasound 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 publishes technology for modifying the surfaces of water tanks in ultrasonic cleaning machines, ultrasonic stirring devices, and ultrasonic reaction devices by analyzing and applying measurement, analysis, and control techniques related to the propagation state of ultrasound as the acoustic characteristics of the target object. <<Consulting Services>> As part of consulting services utilizing megahertz ultrasonic oscillation control technology for surface treatment, the following items are provided: 1: Explanation of principles 2: Provision of specific devices: manufacturing and sales (Development and manufacturing of custom ultrasonic oscillation control probes if necessary) 3: Explanation of operation methods and work know-how 4: Explanation of new ultrasonic utilization technologies (application methods, etc.) Achievements and Examples: 1: Surface modification of ultrasonic tanks 2: Surface modification of ultrasonic transducers 3: Ultrasonic plating treatment (control of chemical reactions) 4: Ultrasonic processing and welding (improvement of thermal conductivity efficiency through ultrasound) 5: Surface modification of various components (ultrasonic stimulation above 200 MHz: stimulation of metal structures)

The Ultrasonic System Research Institute offers custom-made ultrasonic probes capable of controlling ultrasonic propagation states from 500 Hz to 300 MHz. We manufacture and develop original ultrasonic oscillation control probes tailored to your specific needs. The key point is the operational verification of the original probes. The response characteristics to dynamic changes in ultrasonic transmission and reception are the most important. This characteristic determines the range of applications for harmonics. Currently, we can accommodate the following range: Ultrasonic Probe: General Specifications - Measurement Range: 0.01 Hz to 300 MHz - Oscillation Range: 0.5 kHz to 300 MHz - Materials: Stainless steel, LCP resin, silicon, Teflon, glass, etc. - Oscillation Equipment: Example - Function Generator By understanding the acoustic properties of metals, resins, glass, etc., we achieve the desired propagation state in terms of sound pressure level, frequency, and dynamic characteristics through oscillation control.

The Ultrasonic System Research Institute has repeatedly confirmed dynamic nonlinear phenomena by analyzing sound pressure measurement data of an ultrasonic beauty device (30 kHz, 1.5 W). As a result, we developed a "nonlinear resonance type ultrasonic oscillation probe" that applies this characteristic. Currently, we have advanced to the manufacturing technology of ultrasonic probes tailored to specific purposes through various applications of new ultrasonic cleaning and surface treatment technologies utilizing the "nonlinear resonance type ultrasonic oscillation probe."