VT
A rigid optical aid
Borescope
Two safety concerns with solvent removable
What are vapors and flammable?
Two methods for applying MT particles
What are dry and wet method?
A wave form that only travels in solids
What are shear waves?
A powerful gamma source
What is Cobalt 60?
Verifies adequate illumination
What is a Resolution card?
Dye spreads out on the surface
What is "wetability"?
Depth of penetration for MT
What is 1/4" or 6 mm?
The "heart" of the search unit
What is transducer?
Amount of time it takes for 50% of a radioisotope to decay
What is half-life?
A precise measuring device with nibs
What is a digital caliper?
Type II dye penetrant exam
What is visible?
A break in the magnetic field
What is flux leakage?
Particles vibrate parallel to mode of propagation
What are longitudinal waves?
Blue tint coating on film
What is silver halide salts or silver bromide?
Major limitation of VT exam
What is surface only?
Duration penetrant remains on the surface
What is dwell time?
Gives better penetration but less sensitivity
What is DC?
Another name for the Fresnel zone
What is near field?
Used to verify quality of x-ray
What is an IQI?
Alignment of fibers for better resolution
What is coherent?
Three PT Techniques
What are water washable, Post-emulsifiable and solvent removable?
Used to create a longitudinal filed
What is yoke or coil?
A bimodal technique that generates 4 waves forms in the part
What is MOST?
The visible difference in density or grayness between different areas on a radiographic image
What is contrast?