GK SCIENTIST

General Knowledge One Stop Source
Menu
  • Home
  • Social Science
    • History
    • Political Science
    • Geography
  • Science
    • Physics
    • Chemistry
    • Biology
  • Chemistry Notes
  • Mathematics
  • Computer
  • Tutorial MySQL
  • Tutorial Python
  • Java Tutorial
  • English Grammar
  • English Essay
  • Indian Anthropology
  • Philosophy
  • Solved Paper
  • UPSC
  • Current Content
    • Current Affairs
    • RSTV News
    • Yojana and Kurukshetra Gist
  • Donate
  • Contact Us

If you are interested in advertising to our audience, submit the advertising enquiry form.

Advertising Enquiry
Physics

Applications of Ultrasonic Waves

Gk Scientist July 28, 2022 No Comments
Tweet WhatsApp Telegram

Applications of Ultrasonic Waves:

(1) Detection of Flaws in Metals: The strength of components plays an important role in most engineering applications. The strength of the material is reduced due to the presence of any kind of defect in it. The defects can be as large as cracks or as tiny as cavities. The method of detection of such flaws in metals (or also in plastic) using ultrasonic is more reliable, convenient and cheap than using X-rays or γ-rays.

An instrument used to detect the defects such as cracks, flaws and holes in metals is called an ultrasonic inspectascope.

  • When ultrasonic waves pass through metal having some hole or crack inside it, an appreciable reflection occurs.
  • Ultrasound is also reflected from the back surface of the crystal.
  • The reflected pulses are picked up by the receiver and are suitably amplified, and these pulses are now applied to CRO.
  • The transmitted signal and reflected signal from flaw and back surface of metal produce a peak each.
  • The position of the time base of the oscilloscope for the 2nd peak will give the distance of flaw.
Detection of Flaws in Metals - Applications of Ultrasonic Waves

The experimental arrangement is shown in the figure above. Here the transmitting transducer sends a beam of ultrasonics through the material under test. In the presence of a flaw in the specimen, the intensity of the signal reflected back in the receiver will be very weak. Similarly, for a specimen having no flaw, the corresponding signal will be strong. Thus the presence of a small peak on the screen implies the presence of a flaw in the material.

(2) Echo Sounding or Echo Signalling: Ultrasonic waves are highly energetic and due to smaller wavelengths are highly directional and thus show less diffraction. Due to this, ultrasonic waves are not absorbed by water so strongly as low-frequency waves. This property is useful in echo sounding as follows-

(i) Depth Signalling- Ultrasonic waves can be used to determine the depth of sea or depth of water below the ship. Ultrasonic waves are produced and are directed towards the bottom of the sea, at regular intervals. The reflected waves from the bottom of the sea are received. The time interval between sending and reflected waves is recorded.

If ν is the known velocity of ultrasonic waves, the depth of sea = velocity x time/2

(ii) Sound Signalling- This technique is useful in giving the signal to a distant ship. Here high frequency ultrasonic waves are used.

(iii) SONAR- (Detection of icebergs, submarines and other objects in the sea).

SONAR is a device which stands for Sound Navigation and Ranging. Using SONAR it is possible to determine the presence of submerged submarines or an enemy aircraft.

In this system, a sharp U-beam is directed in various directions into the sea. These are picked up on their return after reflection. The reflection of waves represents the presence of some reflecting body in the sea. By know the time interval, the distance of the body can also be calculated. Also, the change in frequency of echo-signal (due to the Doppler effect) helps to determine the velocity and direction of the body.

(3) Cleaning and Clearing- Ultrasonic waves can be used for cleaning utensils, washing clothes and removing dust and soot from the chimney.

(4) Soldering and Metal Cutting- Ultrasonic waves can be used for drilling and cutting processes in metals. These waves can also be used in soldering (for example- soldering of aluminium, which can not be done by normal methods).

(5) Ultrasonic Mixing- A mixture of two non-mixible liquids i.e. a colloid solution (for example- oil and water) can be formed by simultaneously subjecting to ultrasonic radiations. For example- colloid solutions produced using ultrasonic mixing are polishes, paints, food products and pharmaceutical products etc.

(6) Destruction of Lower Life- Animals like rats, frogs, fishes etc. can be killed or injured by high-intensity ultrasonics.

(7) Medical Field-

(i) Diagnosis- Ultrasonic waves are safer than X-rays and are used in the detection of certain tumours.

(ii) Treatment of Neuralgic Pain- The body parts affected due to neuralgic or rheumatic pains get great relief from pain if exposed to Ultrasonic waves.

(iii) Dental Treatment- Ultrasonic waves are highly advantageous in dental treatment because they make dental cutting almost painless, and cut hard material easily, any other mechanical device is not required for cutting.

(iv) Used in Ultrasonography (to observe child growth in mother’s womb) and hence making it useful for diagnosis and treatment.


Nature of Radioactive RaysPolymer- Structure and Classification
Bragg’s X-ray SpectrometerClassification of Polymers on the Basis of Molecular Forces
Diffraction of X-rays and Laue SpotsPreparation and Uses of Some Important Polymers
Uses of Electromagnetic WavesSolutions– Tamil Board
Prev Article
Next Article

Related Articles

Cells in Series and Parallel Derivation
Cells in Series and Parallel: Cells in Series: The cells …
Gk Scientist October 31, 2021 Physics

Cells in Series and Parallel Derivation

Dispersive Power of Grating
Dispersive Power of Grating: The angular spacing between any two …
Gk Scientist July 27, 2022 Physics

Dispersive Power of Grating

Thermal Conductivity in Daily Life
What is Thermal Conductivity? Consider a metallic bar of length …
Gk Scientist January 24, 2023 Physics

Thermal Conductivity in Daily Life

Resolving Power of Grating
Resolving Power Definition: The separation between two objects which are …
Gk Scientist July 27, 2022 Physics

Resolving Power of Grating

Resolving Power of Telescope
Resolving Power of Telescope: The resolving power of telescope is …
Gk Scientist July 27, 2022 Physics

Resolving Power of Telescope

Current Loop as Magnetic Dipole
Current Loop as Magnetic Dipole: Consider a plane loop of …
Gk Scientist June 1, 2022 Physics

Current Loop as Magnetic Dipole

Energy Bands in Solids
Energy Bands in Solids: The electrons of an isolated atom …
Gk Scientist April 15, 2021 Physics

Energy Bands in Solids

Q Value of a Nuclear Reaction
Q Value of a Nuclear Reaction: The energy released or …
Gk Scientist July 25, 2022 Physics

Q Value of a Nuclear Reaction

Leave a Reply Cancel Reply

Search

  • Popular
  • Recent




GK SCIENTIST

General Knowledge One Stop Source

Information

  • About Us
  • Terms and Condition, Disclaimer
  • Contact Us

Android Apps

  • IAS App For English Medium Students
  • IAS Basics App For English Medium Students
  • IAS Hindi App For Hindi Medium Students
DMCA.com Protection Status

Popular Tags

Biology (33) Biology Questions (88) Chemistry (57) Computer (215) Current Affairs (4) Current Content (0) Economy (12) English Essay (172) English Grammar (75) English Literature (10) Geography (83) History (259) Indian Anthropology (11) Indian Polity (14) JKAS Mains Question Papers (17) Mathematics (68) Moral Science (7) NCERT & Other Boards Books (25) Philosophy (114) Physics (89) Political Science (132) RS TV News (33) Science (553) Social Anthropology (7) Social Science (17) Solved Paper (47) UPSC (7) UPSC Mains Question Papers (26)

Downloads

  • NCERT Books
  • Old NCERT Books
  • NIOS Books For IAS, SSC, and State PSC Exam
  • Tamil Nadu Board Books: Important For UPSC, SSC, and State PSC Exam
  • Modern Indian and World History Notes For IAS Exam
  • UPSC Topper 2013 Gaurav Agrawal Notes For IAS Preparation
  • UPSC IAS Prelims General Studies – Previous Year Papers
  • UPSC Mains Question Papers

Copyright © 2023 GK SCIENTIST
Theme by MyThemeShop.com& Hosted On Cloudways

Ad Blocker Detected

Our website is made possible by displaying online advertisements to our visitors. Please consider supporting us by disabling your ad blocker.

Refresh
 

Loading Comments...