Question

how can you detect any crack inside the metal block which cannot be seen from outside ?​

Answer 1

• Ultrasounds can be used to detect cracks and flaws in metal blocks. Metallic components are used in the construction of big structures like buildings, bridges, machines and scientific equipments. The cracks or holes inside the metal blocks, which are invisible from outside reduces the strength of the structure.

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Answer 2

Ultrasounds can be used to detect the defects in the metal blocks. It is used to detect the cracks and flaws in metal blocks.