Question

APPLICATIONS OF ULTRASONIC WAVES

Answer 1

☆Ultrasonic waves are used for the following purposes.

●Ultrasonic flaw detection.

●Cutting and matching of hard materials.

●Ultrasonic soldering and welding.

●Measurement of flow devices.

●Applications in medicine.

●Thermal effect.

●Ultrasonic as means of communication.

Answer 2

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Application of Ultrasonic's wave:

1.Ultrasonic's are used in directional signaling.

2.Ultrasonic's are used in the detection of aircraft, submarines and schools of fish etc.

Ultrasonic's generated by a piezoelectric crystal generator are transmitted towards a target. These waves are reflected by an aircraft or submarine coming across their path. The reflected beam is detected by means of a quartz detector. The device used for the purpose is called SONAR – sound navigation and ranging.

Ultrasonic wave

3.The reflection of ultrasonic is used to estimate the depth of the sea. By measuring the elapsed time between the transmission and reception, after reflection from the bottom, of ultrasonic waves, the depth of the sea can be computed. The instrument used for the purpose is called a fathometer.

Ultrasonic wave, fathometer

4.Heat is produced when an intense beam of ultrasonic's passes through a substance. Joints of thermoplastic materials can be welded homogeneously and water can be boiled with the heat thus generated.

5.An ultrasonic drill is used for preparing teeth for filling. Ultrasonic cleaning machines have been developed to clean very small objects such as hypodermic needles, minute parts of watches etc.

6.Ultrasonic's waves of frequency 60 kHz are used for removing grease, dust etc. from metals. They are also used in ultrasonic washing machines.

7.Ultrasonic are used to detect flaws in metals. They are used in metallurgy to prepare alloys of uniform composition.

8.Ultrasonic's find a number of applications in the field of medicine as ultra sound scanners. They are used in the diagnosis of tumors and in the treatment of certain cancers as well as arthritis and related diseases. They are used in bloodless brain surgery.

Ultrasonic wave, Ultra sound scanner

9.They are used for killing mosquitoes and flies.

Thus ultrasonic's find a variety of applications not only our daily life but also in the field of medicine and industry.

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