Ultrasonic Vibrations
Ultrasonic Vibrations - Related Videos
09:21
Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer
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Cited by 3 •
2015
We present a protocol for using a piezoelectrically-assisted tribometer and optical profilometer to investigate the dependence of ultrasonic wear and friction reduction on linear velocity, contact pressure, and surface properties.
07:28
Measurement of Bioelectric Current with a Vibrating Probe
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Cited by 15 •
2011
The manufacture, calibration and use of non-invasive vibrating probes to measure bioelectric current in various biological systems is described.
08:40
Ultrasonic Welding of Thermoplastic Composite Coupons for Mechanical Characterization of Welded Joints through Single Lap Shear Testing
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Cited by 4 •
2016
A straightforward procedure for ultrasonic welding of thermoplastic composite coupons for basic mechanical testing is described. Key characteristics of this ultrasonic welding process are the use of flat energy directors for simplified process preparation and the use of process data for the fast definition of optimum processing conditions.
01:19
Vibrating Concrete
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2024
Mechanical vibrators are instrumental in compacting newly poured concrete within formwork and around reinforcements. This process is essential to eliminate trapped air pockets and establish a dense concrete mass. One widely used method is vibrating by internal vibrators, often referred to as a poker vibrator or immersion vibrator. It is rapidly inserted through the full depth of the freshly laid concrete and slightly extends into the layer below it (which remains in a plastic state). Consistent...
09:25
Assessment of Ultrasonic Vocalizations During Drug Self-administration in Rats
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Cited by 17 •
2010
Drug self-administration and ultrasonic vocalizations (USV) are used as behavioral assessments in animal research, but rarely in combination. The purpose of this article is to describe the advantages of recording USVs during drug self-administration procedures to assess affective responses to drug experience.
FAQs
Transducers provide the first conversion step: piezoelectric or magnetostrictive devices turn an electrical signal into mechanical motion at ultrasonic frequency. That motion supplies the energy used by the engineering system rather than relying on direct electrical interaction with the workpiece or fluid. The transducer choice therefore determines how an electronic command becomes physical vibration for processing or measurement.
Resonance, amplitude, and coupling jointly control how effectively vibration energy enters and travels through a material. Resonance supports the intended oscillatory response, amplitude governs the strength of motion, and coupling links the vibrating source to the solid, liquid, or gas. Adjusting these factors helps engineers control energy transfer and the resulting material interaction.
The material response depends on the medium and the energy delivered to it. In liquids, ultrasonic energy can produce cavitation, while solids can experience stress-wave interactions; energy transfer can also generate heat. These effects are not merely side phenomena: engineers manage them to obtain useful cleaning, joining, machining, or sensing results while maintaining process control.
Ultrasonic systems can be configured either to change a material or to interrogate it. Welding, cleaning, and machining use vibration-driven interactions to produce a manufacturing result, whereas flaw detection and flow measurement use the response of transmitted energy to obtain information. This distinction helps engineers choose whether the desired outcome is material processing or evaluation.
A practical setup begins by connecting an electrical signal to a suitable transducer, then establishing the required coupling with the target medium. Engineers tune the system around its resonant behavior and set an appropriate vibration amplitude before evaluating the material response. Assessing heat, cavitation, stress waves, or other interactions indicates whether energy transfer is producing the intended outcome.
Ultrasonic welding uses vibration to support joining, while ultrasonic cleaning applies the energy-transfer process to cleaning operations. Ultrasonic machining uses the same general principle in manufacturing. Across these applications, control of resonance, amplitude, coupling, and material response is important because it influences precision and the quality of the resulting process.
For inspection and measurement, the important output is information about a material or moving medium rather than a permanent fabrication change. Ultrasonic flaw detection uses vibration interactions to identify flaws, while flow measurement uses them to evaluate flow. Their engineering value comes from transmitting controlled energy and interpreting system response, supporting inspection reliability and measurement capability.