A technology for alleviating surface residual stress through the control of megahertz ultrasonic oscillation.

The Ultrasonic System Research Institute has released a technology that applies measurement, analysis, and control techniques related to the propagation state of ultrasound to alleviate the surface residual stress of ultrasonic transducers using an ultrasonic and microbubble generation liquid circulation system. This technology for alleviating surface residual stress enables improvements in fatigue strength against metal fatigue. In particular, by considering the guided waves (surface elastic waves) of the target object in the propagation state of ultrasound, we have developed a method to realize effective ultrasonic irradiation conditions through settings, tooling, and control. We have confirmed a wide range of effects on various types of metal parts, resin parts, and powder materials. Ultrasonic Probe: Overview 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 (analysis confirmation of sound pressure data) - Materials: Stainless steel, LCP resin, silicon, Teflon, glass, etc. - Oscillation Equipment: Example - Function Generator - Measurement Equipment: Example - Oscilloscope

The Ultrasonic System Research Institute has developed ultrasonic control technology by applying the "Mathematical Theory of Communication" (Claude E. Shannon) to ultrasound. The developed technology utilizes ultrasonic sound pressure measurement, analysis, and evaluation techniques to adapt the propagation characteristics of ultrasound (dynamic characteristics) to the ensemble (entropy) of communication theory. Unlike the previous "technical problems" related to communication, this was developed as a technical application research addressing the "semantic problems" and "effect problems" related to ultrasonic phenomena. Furthermore, through the "evaluation technology for ultrasonic devices" at the Ultrasonic System Research Institute, concrete results using this method have been confirmed. For more details, we are responding and expanding this as a consulting business.

***<Thinking Approach>*** The Ultrasonic System Research Institute has developed a model of the state, including phenomena related to the nonlinearity of ultrasound, as a Monoïd model in abstract mathematics (category theory). Based on this idea, we have developed a specific method for ultrasonic control as a spectral series of knot theory. The control method adapted to ultrasonic phenomena realizes dynamic changes in cavitation and acoustic flow by feedback analysis of sound pressure measurement data using an autoregressive model. From previous cases and achievements, it has been developed as a classification technique for nonlinear phenomena (harmonics, low-frequency reduction). Through a logical model, we dynamically control effective states of ultrasonic propagation (utilization) by classifying them into four types as follows: 1: Cavitation-dominant type 2: Acoustic flow-dominant type 3: Mixed type 4: Variable type The above logical classification is dynamically controlled by categorizing it into three variable type categories as a realistic response method based on the results of previous measurement data (ultrasonic phenomena that change over time).

<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. ....