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The ultrasound waves are allowed to pass through metal block to which are fitted detectors to detect the waves. If the metal block has a very small defect, such as an air bubble or a crack, then the ultrasound waves are reflected from such spots. The reflected ultrasonic waves indicates that metal block is defective.

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How can ultrasound be used to detect a flaw in a block of metal?

Ultrasound can detect flaws in a block of metal by sending high-frequency sound waves into the material. When these waves encounter a flaw, such as a crack or void, they are reflected back to the surface, creating echoes. Analyzing these echoes helps identify the size, shape, and location of the defect. This non-destructive testing method is effective for assessing the integrity of metal components without causing damage.


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