Page 18 - Liquid Penetration Inspection

Diploma in Mechanical Engineering (Material)

LIQUID PENETRATION INSPECTION

www.pis.edu.my

Advantages and Disadvantages of LPI

High sensitivity to small surface Only surface breaking defects

discontinuities can be detected

Large areas and volumes of parts Pre-cleaning is critical since
can be inspected rapidly contaminants can mask defects

Few material limitations Post cleaning is required

Part with complex geometric Surface finish and roughness can
shapes are routinely inspected affect inspection sensitivity

Penetrant materials and Chemical handling and proper

associated equipment are disposal is required
relatively inexpensive

peneraju • ilmu • sejagat