- Surface modification technology (stress relaxation) through nonlinear oscillation control of ultrasound -

A technology for alleviating and equalizing the surface residual stress of ultrasonic transducers using an ultrasonic and fine bubble generation liquid circulation system.

The Ultrasonic System Research Institute has published a technology that applies measurement, analysis, and control techniques related to the propagation state of ultrasound to relax the surface residual stress of ultrasonic transducers using an ultrasonic and fine bubble generation liquid circulation system. This technology for relaxing surface residual stress enables the improvement of 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 achieve effective ultrasonic irradiation conditions through the setting, tooling, and control. We have confirmed a wide range of effects on various types of metal parts, resin parts, and powder materials. This technology will be offered as a consulting service. This is a new surface treatment technology using ultrasound, which, including the general effects based on acoustic properties, can be utilized and developed as a distinctive operational technology for the development of new materials, stirring, dispersion, cleaning, and chemical reaction experiments.

• Special Construction Method
• Other measuring instruments
• others

Control technology for acoustic flow (the main cause of ultrasonic effects: nonlinear phenomena) using ultrasound and fine bubbles.

The Ultrasonic System Research Institute has developed a method (system) for the <analysis and evaluation> of ultrasound, applying "measurement, analysis, and control" technology related to the nonlinearity of ultrasound. We provide consulting for a degassing microbubble generation liquid circulation system utilizing this technology. To utilize (control) the complex and changing conditions of ultrasound in a stable state, we conduct consulting to add the degassing microbubble generation liquid circulation system to specific tanks present on-site. 1: Explanation of principles 2: Specific proposals tailored to the cleaning machine (device) 3: Explanation of know-how 4: Explanation of verification methods, adjustment methods, and maintenance methods Development of nonlinear vibration control technology using fine bubbles and megahertz ultrasound Regarding this technology, we provide consulting as "vibration measurement technology utilizing ultrasound." 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 characteristics) 4) Detection of interactions (analysis of power contribution rates)

• pump
• Other analytical equipment
• others

Application technologies of <control, measurement, analysis, evaluation> using ultrasonic testers.

The Ultrasonic System Research Institute has developed a new ultrasonic characteristic evaluation technology using megahertz ultrasonic oscillation, based on the analysis results of ultrasonic data propagating on the surface of target objects. This method applies measurement and analysis technology for "sound pressure and vibration" controlled by ultrasonic probe oscillation. We provide consulting and evaluation technology explanations tailored to the development of ultrasonic probes suited to the target object's surface propagation vibration modes. 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 target object. In particular, it serves as a fundamental technology for surface inspection of substrate components and preliminary evaluation of precision cleaning parts, utilizing response characteristics derived from combinations of oscillation and reception, establishing new evaluation parameters for ultrasonic vibrations. By constructing and modifying a logical model based on the measurement, analysis, and evaluation of the dynamic characteristics of ultrasonic surface elastic wave propagation phenomena, we have enabled effective utilization tailored to the objectives (evaluation).

• Non-destructive testing
• Other measuring instruments
• others

Improvement process for ultrasonic propagation efficiency due to harmonics above 200 MHz.

The Ultrasonic System Research Institute has made it possible to control the nonlinear propagation state of ultrasound by measuring, analyzing, and controlling the propagation state of ultrasound and applying it as the acoustic characteristics of the target object. As a result, we have developed a technology that efficiently alleviates the residual stress on the surface of components and homogenizes the entire surface. With this technology to alleviate surface residual stress, we have improved fatigue strength against metal fatigue and achieved uniformity in various surface treatments. In particular, by considering the guided waves (surface elastic waves) of the target object in the setting and control of the ultrasonic propagation state, we have developed control methods, tools, and systems that realize effective dynamic changes in the target object as a certain range of stimuli that include nonlinear phenomena. We have confirmed a wide range of effects on various surfaces of metal parts, plastic parts, and powder materials. This technology is offered as a consulting service.

• Non-destructive testing
• Scientific Calculation and Simulation Software
• others

Surface inspection using ultrasonic oscillation from ultrasonic probes (oscillating type, measuring type, resonant type, nonlinear type).

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 target 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 by developing ultrasonic probes tailored to the purpose (vibration modes propagating on the surface of target 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 target object. In particular, this fundamental technology serves as a new evaluation parameter for ultrasonic vibration, utilized in surface inspection of substrate components and preliminary evaluation of precision cleaning parts, based on the response characteristics derived from combinations of oscillation and reception. By measuring, analyzing, and evaluating the dynamic characteristics of ultrasonic waves related to surface elastic wave propagation phenomena, we have enabled effective utilization tailored to the purpose (evaluation) by constructing and modifying logical models.

• Non-destructive testing
• Other measuring instruments
• others

To stabilize the effects of cavitation, a statistical perspective is essential.

The Ultrasonic System Research Institute is developing an effective "Ultrasonic Oscillation Control System" based on a statistical approach using abstract algebra in relation to the utilization of ultrasound. Regarding the statistical approach, statistical mathematics has both abstract and concrete aspects, and through contact with concrete entities, abstract ideas or methods are developed; this is the characteristic of statistical mathematics. In the research of ultrasound, "a statistical perspective is essential to stabilize the effects of cavitation." About the model: Models are constructed with the aim of effectively advancing understanding, prediction, control, etc., regarding the subject. Constructing an accurate model is difficult, and the examination progresses with representations that appropriately "round off" the complexity of the subject. In that sense, the process of constructing or building a model requires statistical thinking. Propagation characteristics of ultrasound: 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)

• pump
• Water Treatment
• others

Surface treatment using ultrasonic surface elastic waves.

The Ultrasonic System Research Institute has developed (and published) methods to apply technologies using ultrasound and microbubbles for: 1) Relaxing residual stress near surfaces 2) Removing microscopic burrs in ultrasonic beauty devices. Through the technology that relaxes residual stress using ultrasound and microbubbles, we have experienced improvements in fatigue strength against metal fatigue, which leads to the uniformity of the surface of ultrasonic beauty devices and the efficiency of ultrasonic oscillation and propagation. This significantly changes the usage conditions of ultrasound (the dynamic characteristics of propagation frequency). In particular, the sound pressure level and propagation frequency of ultrasound vary greatly depending on the edge treatment of metal components that come into contact with the skin. By performing uniformity treatment, stable reproducibility and extended lifespan can be achieved. (This has been developed from achievements in ultrasonic cleaning.) We offer this technology as a consulting service.

• Water Treatment
• Vibration and Sound Level Meter
• others

Surface inspection technology utilizing ultrasonic transmission and reception characteristics.

The Ultrasonic System Research Institute has developed a new surface inspection technology using megahertz ultrasonic oscillation based on its track record of analyzing ultrasonic data propagating on the surface of target objects. This method applies measurement and analysis technology for "sound pressure and vibration" controlled by ultrasonic probe oscillation. We provide consulting and evaluation technology explanations tailored to the development of ultrasonic probes that match the target object's surface vibration modes. This is an application of new ultrasonic oscillation control technology. By utilizing nonlinear phenomena related to megahertz ultrasonic propagation states that correspond to the acoustic characteristics of the target object, it is possible to detect new features regarding the surface condition of the target object. In particular, by utilizing response characteristics from combinations of oscillation and reception, this fundamental technology serves as a new evaluation parameter for surface inspection of substrate components and pre-evaluation of precision cleaning parts. 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 objectives (evaluation) by constructing and modifying logical models.

• Non-destructive testing
• Other measuring instruments
• others

Relaxation and homogenization treatment of surface residual stress using ultrasound and microbubbles!!

The Ultrasonic System Research Institute has developed (and published) a method to adapt technology for relaxing residual stress near surfaces using ultrasound and microbubbles to ultrasonic transducers. The technology for relaxing residual stress through ultrasound and microbubbles has led to improvements in fatigue strength against metal fatigue, which in turn contributes to the uniformity of the surface of ultrasonic transducers and the efficiency of ultrasonic oscillation, significantly changing the usage of ultrasound. In particular, in ultrasonic cleaning using detergents and solvents, ultrasound has been effectively controlled to achieve reflection, refraction, and transmission according to the acoustic characteristics of the target object by setting conditions tailored to the purpose. This technology will be offered as a consulting service. Ultrasonic propagation characteristics: 1) Detection of vibration modes (changes in autocorrelation) 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) Note: "R" is a free statistical processing language and environment. autcor: autocorrelation analysis function bispec: bispectrum analysis function

• pump
• Other measuring instruments
• others

Feedback analysis using multivariate autoregressive models for time series data: autocorrelation, power spectrum, bispectrum...

The Ultrasonic System Research Institute has developed a completely new technology for controlling the propagation state of surface elastic waves using its original product (ultrasonic tester). The ultrasonic sound pressure measurement and analysis technology developed so far will apply measurement, analysis, and evaluation techniques related to nonlinear phenomena in ultrasonics. It has become possible to implement new countermeasures based on vibration phenomena concerning vibrations and noise from buildings and roads, equipment, devices, walls, pipes, desks, handrails... as well as the vibrations at the moment of metal melting during welding and instantaneous vibrations during machining. Consulting services are available for this technology. Note: The following tools will be used for analysis Note: OML (Open Market License) Note: TIMSAC (TIMe Series Analysis and Control program) Note: "R," a free statistical processing language and environment autcor: autocorrelation analysis function bispec: bispectrum analysis function mulmar: impulse response analysis function mulnos: power contribution rate analysis function

• Vibration and Sound Level Meter
• Scientific Calculation and Simulation Software
• others

Development technology for ultrasonic probes and ultrasonic oscillation control systems - Aging treatment of piezoelectric elements.

The Ultrasonic System Research Institute has developed a technology to adjust the ultrasonic propagation characteristics of ultrasonic elements (piezoelectric elements) based on measurement, analysis, and evaluation results regarding the propagation state of ultrasound, utilizing ultrasonic systems (sound pressure measurement, oscillation control). To utilize the surface acoustic waves of ultrasonic elements (piezoelectric elements) according to specific purposes, special surface treatments are performed on the element surface. It allows for adjustments to the sound pressure level and frequency range of the propagating ultrasound. By realizing dynamic ultrasonic propagation control through the combination of ultrasound (oscillation control) and surface acoustic waves, it has evolved into an adjustment technology based on the characteristics derived from the analysis of sound pressure data. The key point is the optimization of oscillation conditions (waveform, output, frequency, variations, etc.) that enables efficient control of nonlinear phenomena caused by surface acoustic waves. As specific technologies mentioned above, we provide consulting services for system technologies that control nonlinear phenomena (bi-spectral) resulting from the interaction of ultrasound with tanks and tools, tailored to specific purposes (cleaning, stirring, processing, welding, surface treatment, stress relief treatment, inspection, etc.).

• Analysis and prediction system
• Scientific Calculation and Simulation Software
• others

Dynamic control of ultrasound to achieve stress relaxation on metal surfaces.

The Ultrasonic System Research Institute has developed a completely new dynamic control technology for ultrasound by utilizing two function generators. By generating oscillations with two different waveforms (sweep), we have achieved a technique to control the nonlinear phenomena of ultrasound. Note: The generation of (10th order and higher) harmonics caused by original oscillation control is realized by resonating with low-frequency vibration phenomena, resulting in the generation of high-amplitude harmonics, which is a nonlinear (resonance) phenomenon of ultrasonic vibrations. By optimizing the ultrasonic propagation characteristics of various components according to their intended purpose, efficient ultrasonic oscillation control becomes possible. Through the measurement and analysis of sound pressure data from ultrasonic testers, this system technology allows for the dynamic control of surface elastic wave changes according to the intended application. Practically, multiple (two types of) ultrasonic probes generate multiple (two types of) oscillations (sweep oscillation, pulse oscillation), which create complex vibration phenomena (original nonlinear resonance phenomena), achieving high sound pressure propagation states at high frequencies or low sound pressure levels at frequencies matched to the desired natural frequency.

• Analysis and prediction system
• Non-destructive testing
• Vibration and Sound Level Meter

Original ultrasonic probe's "oscillation and control" technology

The Ultrasonic System Research Institute has developed applied technology that utilizes surface acoustic waves through ultrasonic control. By combining ultrasound and surface acoustic waves, we achieve dynamic control of ultrasonic propagation. The key point is the ability to efficiently control nonlinear phenomena caused by surface acoustic waves. As specific technologies, we have developed system technologies that control nonlinear phenomena (bisectional spectrum) resulting from the interaction of ultrasound with water tanks and tools, tailored to specific purposes (cleaning, stirring, stress relief, inspection, 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 acoustic characteristics of the system (measurement, analysis, evaluation).

• Other measuring instruments
• Scientific Calculation and Simulation Software
• others

Relaxation Effect of Residual Stress on the Surface of Ultrasonic Transducers — Oscillation of Ultrasonic Transducers Using a Function Generator —

The Ultrasonic System Research Institute is applying measurement, analysis, and evaluation techniques related to ultrasonic propagation to publish technology that alleviates surface residual stress in ultrasonic transducers using ultrasound and fine bubbles. With this technology to relieve surface residual stress, it has become possible to improve fatigue strength against metal fatigue. As a result, the effectiveness of various components, including ultrasonic tanks, has been demonstrated.

• Vibration and Sound Level Meter
• Scientific Calculation and Simulation Software
• others

Relaxation and uniform treatment of surface residual stress using ultra-fine bubbles and megahertz acoustic flow control.

<<Deaeration Fine Bubble Generation Liquid Circulation Device>> 1) By narrowing the suction side of the pump, cavitation is generated. 2) Cavitation causes bubbles of dissolved gas to form. The above describes the state of the deaeration liquid circulation device. 3) When the concentration of dissolved gas decreases, the size of the bubbles formed by cavitation becomes smaller. 4) Through appropriate liquid circulation, fine bubbles of less than 20μ are generated. The above describes the state of the deaeration microbubble generation liquid circulation device. 5) When ultrasonic waves are applied to the above-mentioned deaeration fine bubble generation liquid circulation device, the ultrasonic waves disperse and crush the fine bubbles, and when measuring the fine bubbles, the distribution of ultrafine bubbles becomes greater than that of fine bubbles. The above state indicates that ultrasonic waves can be stably controlled. 6) In the state where ultrasonic waves can be stably controlled, the original product: a megahertz ultrasonic oscillation control probe is used to control the oscillation of megahertz ultrasonic waves. The method of controlling the sound pressure level is achieved by controlling the original nonlinear resonance phenomenon of liquid circulation and megahertz ultrasonic waves, setting and controlling it to an effective dynamic state.

• Turbid water and muddy water treatment machines
• Other measuring instruments
• Manufacturing Technology

Surface modification treatment using ultrasonic propagation control above 200 MHz.

The Ultrasonic System Research Institute has made it possible to control the nonlinear propagation of ultrasound by analyzing and applying measurement, analysis, and control techniques related to the propagation state of ultrasound as the acoustic characteristics of the target object. As a result, we have developed a technology that efficiently alleviates residual stress on the surface of components and homogenizes the entire surface. This technology for alleviating surface residual stress improves the fatigue strength against metal fatigue and achieves uniformity in various surface treatments. In particular, by considering the guided waves (surface elastic waves) of the target object in the setting and control of the ultrasound propagation state, we have developed control methods, tools, and systems that realize effective dynamic changes in the target object as a stimulus within a certain range that includes nonlinear phenomena. We have confirmed a wide range of effects on various surfaces of metal parts, plastic parts, and powder materials. This is a new surface treatment technology using ultrasound, which, including the general effects based on acoustic characteristics, can be utilized and developed as a distinctive inherent operational technology for the development of new materials, stirring, dispersion, cleaning, and chemical reaction experiments.

• Water Treatment
• Other measuring instruments
• others

Kort Valuta Inc. (Head Office: Shibuya, Tokyo; CEO: Hideki Shibata) is pleased to announce that we will hold our next recruitment event, “Kort Valuta Night,” on November 26, 2025. This recurring event offers an opportunity for potential candidates to casually learn about our company culture and team atmosphere before applying. By lowering the barrier to entry and providing authentic insights from current employees, the event helps participants gain a more concrete sense of what it’s like to work at Kort Valuta. Since the event’s launch, approximately ten attendees have gone on to join the company in a range of roles — including marketing, customer support, and backend engineering.

Kort Valuta Inc. (Headquarters: Shibuya-ku, Tokyo; President & CEO: Hideki Shibata; hereinafter “the Company”) announces that it has renewed the user interface (UI) of TwooCa, the Company’s digital employee ID with Visa payment functionality.

Kort Valuta Inc. (Headquarters: Shibuya-ku, Tokyo; CEO: Hideki Shibata) is pleased to announcethat NBS Logisol Co., Ltd. (Headquarters: Hita City, Oita Prefecture; CEO: Itsuro Kono) has introduced “TwooCa,”a Visa-enabled digital employee ID card, for approximately 1,100 employees.

An article about the resin-based lightweight formwork system "PERI DUO" has been published in the "Construction News" (November 7, 2025)! "PERI DUO" is a new system formwork made of resin that can be used for walls. It is made from a newly developed material called "Politec," which is high-strength and lightweight. With fewer components, it is easy to handle. It allows for increased reuse and is an environmentally friendly lightweight formwork that is flexible on the construction site! 【DUO Product Features】 ■ New system formwork made of resin ■ High strength and lightweight ■ Fewer components and easy to handle ■ 100% recyclable *For more details about this product, please feel free to contact us. PERI Japan Co., Ltd.

We are pleased to announce that the "Kuji Regional Renewable Energy Circulation Project" in Kuji City, Iwate Prefecture, has received an Excellence Award at the 2025 Solar Week Awards organized by the Japan Photovoltaic Energy Association. The "Solar Week Awards" recognize initiatives and projects that contribute to the community, are desired by the community, and serve as models for the expansion of solar power generation. On July 24, 2025, NGK Insulators, Ltd. issued a press release titled "Start of Operation of Solar Power Generation Equipment at Hybrid Storage Facility with Sharing Function - Ceremony Held at Solar Power Plant Operated by Iwate Bank Group Company." This demonstration of the hybrid storage facility with sharing function (StorageHub) is being conducted by manorda Iwate, a regional trading company fully funded by Iwate Bank, with development led by NR-Power Lab Co., Ltd. NR-Power Lab Co., Ltd. is leading the design, development, and system operation of the StorageHub in this project. We will continue to collaborate with our partner companies to engage in technological development and the creation of advanced services aimed at realizing a sustainable local community.