Like all nondestructive inspection methods, liquid penetrant inspection has both advantages and disadvantages. The primary advantages and disadvantages when compared to other NDE methods are summarized below.
- The method has high sensitivity to small surface discontinuities.
- The method has few material limitations, i.e. metallic and nonmetallic, magnetic and nonmagnetic, and conductive and non-conductive materials may be inspected.
- Large areas and large volumes of parts/materials be inspected rapidly and at low cost.
- Parts with complex geometric shapes are routinely inspected.
- Indications are produced directly on the surface of the part and constitute a visual representation of the flaw.
- Aerosol spray can make penetrant materials very portable.
- Penetrant materials and associated equipment are relatively inexpensive.
Related Courses in Engineering Design
- Only surface breaking defects can be detected.
- Only materials with a relatively nonporous surface can be inspected.
- Precleaning is critical since contaminants can mask defects.
- Metal smearing from machining, grinding, and grit or vapor blasting must be removed prior to LPI.
- The inspector must have direct access to the surface being inspected.
- Surface finish and roughness can affect inspection sensitivity.
- Multiple process operations must be performed and controlled.
- Post cleaning of acceptable parts or materials is required.
- Chemical handling and proper disposal is required.
Top Courses in Engineering Design
Oilandgasclub.com is an international oil and gas (online & offline) conference technical training org from India. Oilandgasclub.com 3000+ professionals trained 150,000 hours of classes delivered 500+ expert trainers available and 3600+ respondents 30+ countries 80+ team. Blogs about technical tips at this blog. Contact or more about customized technical training from this page
70+ courses 7 venues 5 categories
OILANDGASCLUB.COM HAS PUBLISHED 150+ ARTICLES IN THIS BLOG Subscribe