Ultrasonic Testing - Applications and Advantages of Ultrasonic NDT in Industry


Ultrasonic testing is a non-destructive testing method that is used commonly for
-       Detecting cracks, defects and faults in a test piece;
-       Measuring the dimensions of a test piece;
-       Understanding the nature or character of a material;

How is the test carried out?
The testing unit or system consists of a receiver, transducer, and a display unit. The receiver or pulse is the unit that produces electrical pulses. The transducer then produces ultrasonic energy in high frequency. This sound energy or wave passes through the test piece. If the material has no-fault, it will behave as a standard piece – however, when there is a crack, fault, or break in between, the wave is intercepted by this fault line from where the wave reflects. This reflected wave or echo is then converted by the transducer into an electrical signal. This electrical signal gets displayed on the screen. The duration or period from wave generation to the echo is now displayed on the screen. The time that the wave took to travel to and fro, directly reflects the distance – indicating where the fault is located and how it is oriented.

Advantages of ultrasonic testing:
1.      Ultrasonic testing is a superior non-destructive method of testing a piece and detecting a flaw.
2.      The other distinct advantage is that the test piece needs to be accessed from only one side, using this method.
3.      Both surface and below the surface flaws and discontinuities can be detected by this test method.
4.      The best thing about this method is that it can determine the exact position of the reflector and also estimate the shape and size of the discontinuity.
5.      The test can be conducted with minimum preparation of the test piece.
6.      Results are instantaneous as the display screen shows the result almost immediately.
7.      It is possible to record the images of the reflector or the discontinuity if there is an automated system that is used with the testing unit.
8.      This method can be used to test the thickness of the material too, for example pipe thickness.

Comments

Post a Comment

Popular posts from this blog

How does ultrasonic testing help?

  Do you have any idea about any testing we can perform without object destruction? There is one such technique called non-destructive testing method which we can use. It is ultrasonic testing which is the best to detect flaws and defects without damaging the object. This test is one of the best to check for any corrosion or defects.  You can avoid part failure or destruction of the entire asset by using it periodically. As a result, you can find its application in the various industries. What is Ultrasonic testing? Ultrasonic testing is a non-destructive testing method that uses sound waves to detect thickness, cracks and defects in components and materials. For example, this method is effective for determining the pipe thickness and wall thickness. What is the working principle of Ultrasonic testing? Ultrasonic testing uses a   piezoelectric transducer that transmit and receive ultrasonic waves. It is the basic form of a pulse-receiver and oscilloscope display. The tr...
Read more

Use of Ultrasonic Testing in the Power Generation Industry

Ultrasonic testing is a method used for determining the thickness of a structure with the help of sound waves. These sound waves are of high frequency, and this method is a reliable non-destructive method used in the power generation industry. There is no need to cut the test piece or use any chemical that might deteriorate it. The sound waves travel through the surface of even sturdy metals and help determine the thickness.   How does Ultrasonic Testing work? High-frequency sound waves that are way beyond the limit of the human ear get induced in this non-destructive testing technique. The test is performed under the supervision of an expert only. They can do the setup with proper requirement standards. Devices are used to induce the sound waves into the material in question. These sound waves can penetrate through any surface except for paper or wooden products. After passing through the surface, the sound wave is reflected when hitting the boundary and is returned to th...
Read more