Question: What are the different names of liquid penetrant testing?
Answer: Dye Penetrant Testing (DPT), Penetrant Testing
(PT), Dye Penetrant Inspection (DPI), Dye Penetrant Inspection (LPI).
Question: What is principle of Liquid Penetrant Testing?
Answer: Capillary Action
Question: What is Capillary Action?
Answer: Capillary Action is Fluid Flow through a narrow
tub or spa from combine effect of Viscosity, Surface Tension, Cohesion and
Adhesion.
Question: General Liquid
Penetrant Testing Steps
Answer:
1) Precleaning
2) Penetrant Application
3) Cleaning (Excess Penetrant removal)
4) Developer Application
5) Examination
6) Post Cleaning
Question: What are the types of
penetrant as per MIL-I-25135 / AMS 2644?
Answer: The
Types of Penetrant are two as per MIL-I-25135 / AMS 2644.
Type 1 - Fluorescent Penetrant Testing
Type 2 - Visible Penetrant Testing
Question: What are the Methods of
Cleaning as per MIL-I-25135 / AMS 2644?
Answer: The
Methods of Cleaning in Liquid Penetrant Testing are Four.
Method A—Water-washable
Method B—Post-emulsifiable, lipophilic
Method C—Solvent removable
Method D—Post-emulsifiable, hydrophilic
Question: What are the forms of
Developer in LPT as per MIL-I-25135 / AMS 2644?
Answer: The Forms of Developers in LPT as per MIL-I-25135 / AMS 2644 are Six.
Form a: dry powder
Form b: Water Soluble
Form c: Water Suspendible
Form d: Nonaqueous Type I (for Fluorescent)
Form c: Nonaqueous Type II (for Visible)
form r: Special application
Question: What are the types of
Solvents as per AMS 2644?
Answer: Types of Solvent are Three.
Class 1: halogenated
Clsss 2: nonhalogenated
Class
3: special application
Question: What types of defects can be detected in a
liquid penetrant test?
Answer: Surface Defects
