How is some defects in a metal block be detected using ultrasound?
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Defects in metal blocks do not allow ultrasound to pass through them and they are reflected back. This fact is used to detect defects in metal blocks. Ultrasound is passed through one end of a metal block and detectors are placed on the other end. The defective part of the metal block does not allow ultrasound to pass through it. As a result, it will not be detected by the detector. Hence, defects in metal blocks can be detected using ultrasound.
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there are tongs present on the other side of the metal which is to be checked . Ultrasound waves are passed from the metal substance in the waves are detected by the tong like structure then there are no default. But if the ultrasound waves are reflected then the metal is said to have a flaw in it.
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