What is the function of the developer in dye penetrant inspection?

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Multiple Choice

What is the function of the developer in dye penetrant inspection?

Explanation:
The function of the developer in dye penetrant inspection is to reveal indications by drawing penetrant out of cracks. After the penetrant has entered a flaw and the excess is removed, the developer provides a porous medium that pulls the penetrant back to the surface through capillary action. This concentrates the dye at the defect and creates a visible (or fluorescent under UV) indication against the background, making the flaw detectable. It does not cure or darken the surface, and removing excess penetrant is done before applying the developer.

The function of the developer in dye penetrant inspection is to reveal indications by drawing penetrant out of cracks. After the penetrant has entered a flaw and the excess is removed, the developer provides a porous medium that pulls the penetrant back to the surface through capillary action. This concentrates the dye at the defect and creates a visible (or fluorescent under UV) indication against the background, making the flaw detectable. It does not cure or darken the surface, and removing excess penetrant is done before applying the developer.

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