Megahertz ultrasonic system (application of ultrasonic oscillation control technology)

The Ultrasonic System Research Institute, in collaboration with Fuji High Pressure Flexible Hose Co., Ltd., has applied for a patent regarding welding technology, utilizing an ultrasonic oscillation control probe for welding methods. Patent Application No. 2021-159990. Ultrasonic Probe: Overview Specifications - Measurement Range: 0.01 Hz to 200 MHz - Oscillation Range: 0.5 kHz to 25 MHz - Propagation Range: 0.5 kHz to over 700 MHz - Material: Stainless steel, steel materials, etc. - Oscillation Equipment: Example - Function Generator Oscillation Method Control settings are made corresponding to the acoustic characteristics of the target object. As a result, by controlling the original nonlinear resonance phenomenon, we achieve ultrasonic propagation states tailored to specific purposes. This is a new ultrasonic control technology based on the measurement, analysis, and evaluation of ultrasonic propagation states for precision cleaning, processing, stirring, inspection, and more. By utilizing the acoustic characteristics (surface elastic waves) of various materials, ultrasonic stimulation of structures and machinery weighing several tons can be controlled with an ultrasonic output of less than 20 W. 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.

The Ultrasonic System Research Institute has developed ultrasonic utilization technology (nonlinear phenomena: control of acoustic flow) using the "Constructal Law" related to flow and shape, inspired by the observation of flow. Regarding ultrasonic utilization, we believe that through our experience in observing flow, we can intuitively grasp acoustic flow (the nonlinear phenomenon of ultrasound). Acoustic flow <General Concept> When a finite amplitude wave propagates 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 materials, jigs, liquid circulation) within an acoustic field, or near vibrating objects due to inertial losses. 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)

The Ultrasonic System Research Institute has released an experimental video utilizing the ultrasonic oscillation function of the ultrasonic tester NA (100MHz oscilloscope type), which makes measurement and analysis of ultrasonic waves easy. System Overview (Ultrasonic Tester NA 100MHz Type) 1. Price: 264,000 yen (including tax: 10% consumption tax) 2. Contents: - Dedicated probe for measuring sound pressure of ultrasonic cleaners: 1 unit Model number: 120A16: Type A Cable length: 1000 mm Tip (stainless steel): 130 mm Weight: 76 g Cable thickness: diameter 3 mm (Reference standard: ICE-61010 CATII) - General-purpose ultrasonic measurement probe: 1 unit Model number: 120B25: Type C Cable length: 1000 mm Tip (piezoelectric element): diameter 22 mm Weight: 40 g; connection plug: BNC Cable thickness: diameter 3 mm - Oscilloscope set: 1 set (• Bandwidth (-3dB): 100MHz • Maximum sampling rate: 1G samples/s) - Analysis software, manual, and various installation sets: 1 set

The Ultrasonic System Research Institute (Location: Hachioji City, Tokyo) has developed ultrasonic oscillation control technology that enables the utilization of ultrasonic propagation states above 100 MHz by applying a function generator and ultrasonic probe to 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, it is possible to control ultrasonic stimulation above 100 MHz to the target object with an ultrasonic output of less than 20 W, even in a 1000-liter water tank. This 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. The key point is to confirm the ultrasonic propagation characteristics of the target object, and it is important to set the oscillation conditions of the function generator as a control method for the original nonlinear resonance phenomenon (Note 1). Note 1: Original Nonlinear Resonance Phenomenon This occurs when the generation of harmonics produced by original oscillation control is realized at a high amplitude due to resonance phenomena, resulting in ultrasonic vibration resonance phenomena.