Basics of NDT
Non-Destructive Testing
What does NDT stand for?
To detect surface defects before using advanced techniques
What is the primary purpose of visual inspection in NDT?
Capillary action draws penetrant into surface defects
What is the key principle behind LPT?
ASTM E165/E165M
What is the ASTM standard for Liquid Penetrant Testing?
Welded Joint – Strong, permanent, and hard to break!
Which mechanical concept best represents a steady, unbreakable relationship?
Preserves material integrity & detects defects without damage
Name two advantages of NDT over destructive testing.
Borescope & Magnifying Glass
Name two tools used in visual inspection.
Solvent-removable, Water-washable, Post-emulsifiable
Name the three main types of liquid penetrants.
Water-washable penetrants are removed with water, while solvent-removable ones require a cleaner
What is the difference between Water-washable and Solvent-removable penetrants?
First Law of Thermodynamics!
Which thermodynamic law describes the energy balance in a system, just like balancing love and effort in a relationship?
Aerospace & Manufacturing
What are two common industries that rely on NDT?
Proper lighting enhances defect visibility
What role does lighting play in visual inspection?
It draws penetrant out of defects for visibility
What is the purpose of a developer in LPT?
It allows better control over excess penetrant removal
What is the purpose of post-emulsification in LPT?
Liquid Penetrant Testing (LPT)!
Which NDT method uses a liquid to detect surface cracks, just like deep emotions reveal hidden truths in love?
Liquid Penetrant Testing (LPT)
Which NDT method is best for detecting surface cracks in metals?
It processes and enhances images for defect analysis
How does a computer enhancement system assist in visual inspection?
Advantage: Simple & cost-effective
Limitation: Cannot detect subsurface defects
Name one advantage and one limitation of LPT.
Fluorescent Penetrant Inspection
What does FPI stand for in LPT?
Fluorescent Penetrant Testing!
Just like relationships, some defects are only visible under special lighting. Which NDT technique uses fluorescent dyes to highlight flaws?
Name three common NDT techniques.
Name three common NDT techniques.
It cannot detect internal defects
What is a limitation of visual inspection in NDT?
UV light or White light with proper intensity
What is the standard lighting requirement for LPT testing?
Radiographic Testing (RT) & Ultrasonic Testing (UT)
Name two other NDT techniques besides LPT.
Microcrack!
Just like tiny misunderstandings can weaken love, which type of defect is a small but dangerous crack inside a material?