Question

Is there any technique to detect cracks and flaws in a block of metal? If yes, the explain it with labelled diagram.
Or
Explain, how defects in a metal block can be detected using ultrasound.

Answer 1

Answer:

Below is the detailed answer.

Explanation:

Ultrasound are waves that have higher frequencies physically similar to other sounds. But cannot be heard by Humans There are many uses of ultrasounds.  It can be used to detect holes or cracks in metal blocks. These can not be seen with naked eye hence these rays are transmitted on the metal blocks as they rays pass through it, they scan cracks or holes showing their exact locations on the computer or the machine used.