1. Non DestructiveTesting

2. Advantages In-service testing is possible Repeated testing is possible
Little preparation is needed
Test are made on the object

3. Visual inspection Eye Optical aids Microscope Borescope Endscope
Flexiscope(flexible fibre-optic borescope)

5. Dye penetration testing
Cleaning
Penetrant application
Removal of excess penetrant
Application of developer
Inspection and evaluation

6. Magnetic particle testing
Principle
Procedure
Surface preparation
Initial demagnetization
Degreasing and cleaning
Magnetization
Application of particles
Viewing

7. Radiography

8. Ultrasonic testing Normal beam pulse-echo
Normal beam through-transmission
Angle beam pulse-echo
Angle beam through-transmission

11. END