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Liquid Penetrant Inspection (LPI) is an NDT method that uses a penetrating dye in order to expose surface flaws in ferrous and non-ferrous materials. LPI is based upon capillary action, where low surface tension fluid penetrates into clean and dry surface-breaking discontinuities. LPI is used to detect casting and forging defects, cracks, and leaks in new products, and fatigue cracks on in-service components.
Some of the methods we use are:
- Color Contrast Penetrants
- Fluorescent Penetrants
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