Ultrasonic sound, also known as ultrasound, is produced by sound waves that have frequencies so high that they cannot be heard by the human ear. Explanations of four applications of ultrasonic sound within industry are provided below.
1. Cleaning
Many industries use ultrasonic sound to clean. Ultrasonic cleaning is beneficial because it does not use a brush, which can scrape surfaces. Ultrasonic cleaning is mostly used on hard surfaces, such as metals, glass, ceramics, and plastics.
2. Plastic welding
The process was invented in the 1960's and used to weld toys, appliances, and car parts.
3. Metal welding
This process was developed in the 1950's and used mostly on semiconductors and high conductivity metals. Metal welding is beneficial because it produces relatively low amounts of heat and low amounts of distortion experienced by the metals.
4. Sonar
Sonar stands for sound navigation & ranging. Ultrasonic waves are emitted into the water. The waves hit objects and are reflected back to the sonar device. Submarines, scuba divers, and fishing trawlers can determine how far an object is by the amount of time it takes for the reflected wave to return to the sonar device.
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