What is the principle of ultrasonic testing?

What is the principle of ultrasonic testing?

Ultrasonic Testing (UT) uses high frequency sound energy to conduct examinations and make measurements. Ultrasonic inspection can be used for flaw detection/evaluation, dimensional measurements, material characterization, and more.

Why is ultrasonic testing used?

Ultrasonic testing (UT) is a non-destructive test method that utilizes sound waves to detect cracks and defects in parts and materials. It can also be used to determine a material’s thickness, such as measuring the wall thickness of a pipe.

What is the importance of ultrasonic testing?

Why is it Used? As a non-destructive testing method, ultrasonic testing is ideal for detecting flaws and defects without damaging the object or material being tested.

What is the frequency range for ultrasonic test?

Most ultrasonic testing is available within 400 kHz to 25 MHz. These vibrations are beyond the audible range and propagate in the test material as waves of particle vibrations. Sound beams of all frequencies can penetrate fine-grained material without difficulty.

What type of wave is ultrasonic?

Ultrasonic wave is defined as “inaudible sound with high frequency for human” the frequency of which generally exceeds 20 kHz. These days, sound wave which is not intended to be heard is also called ultrasonic wave.

What are the limitations of ultrasonic testing?

Disadvantages of Ultrasonic Testing Techniques:

• Training is more extensive than other methods.
• More expensive than other methods.
• Difficult to use on thin materials.
• Part Geometry can cause complications.
• Needs relatively smooth surface to couple transducer.

How do you perform a UT test?

Ultrasonic testing can be performed using two basic methods – pulse-echo and through-transmission. With pulse echo testing, the same transducer emits and receives the sound wave energy.

What is the maximum frequency used in ultrasonic inspection?

What is the maximum frequency used in the ultrasonic inspection? Explanation: The maximum frequency that may be needed for an ultrasonic inspection is around 50 MHz. Such frequencies make it easy for the devices to detect the flaws.