Non DestructiveTesting
Advantages In-service testing is possible Repeated testing is possible Little preparation is needed Test are made on the object
Visual inspection Eye Optical aids Microscope Borescope Endscope Flexiscope(flexible fibre-optic borescope)
Dye penetration testing Cleaning Penetrant application Removal of excess penetrant Application of developer Inspection and evaluation
Magnetic particle testing Principle Procedure Surface preparation Initial demagnetization Degreasing and cleaning Magnetization Application of particles Viewing
Radiography
Ultrasonic testing Normal beam pulse-echo Normal beam through-transmission Angle beam pulse-echo Angle beam through-transmission
END