An inherent discontinuity in forgings that cannot be detected using visual testing is:

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Multiple Choice

An inherent discontinuity in forgings that cannot be detected using visual testing is:

Explanation:
Visual testing only sees what is on or very near the surface. Some discontinuities are inherent to the forging process and can lie beneath the surface, so they aren’t visible to the naked eye. A seam is a discontinuity that forms along the forge line and can be internal, meaning it may not break the surface. Because it can remain hidden, visual testing alone can’t reliably detect it. To reveal such internal features, non-destructive methods like radiography or ultrasonic testing are used. That’s why seam is the best choice for an inherent discontinuity in forgings that cannot be detected by visual testing.

Visual testing only sees what is on or very near the surface. Some discontinuities are inherent to the forging process and can lie beneath the surface, so they aren’t visible to the naked eye. A seam is a discontinuity that forms along the forge line and can be internal, meaning it may not break the surface. Because it can remain hidden, visual testing alone can’t reliably detect it. To reveal such internal features, non-destructive methods like radiography or ultrasonic testing are used. That’s why seam is the best choice for an inherent discontinuity in forgings that cannot be detected by visual testing.

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