Fluorescent Penetrant
Because the liquid must seep into the defect, Penetrant Testing can only be used to find this specific type of flaw.
What are surface defects?
Magnetic Particle Testing can only be used on this specific classification of metals, which includes iron and most steels.
What is Ferromagnetic?
Eddy Current inspection relies on inducing this type of invisible field into conductive aircraft materials.
What is Electromagnetic Field?
This testing method utilizes these high-frequency waves, we'll above human hearing, to find internal flaws in aircraft structures.
What are Sound Waves?
RT utilizes these high energy electromagnetic waves to penetrate dense aircraft structures and reveal internal anomalies
What are X-Rays?
The very 1st step of this process requires Airmen to ensure the part is completely this, otherwise cracks will be blocked.
What is Clean (and Dry)?
The fine metallic bath used in this method contains particles dyed to glow brilliantly under this type of illumination.
What is a Blacklight (Or UV Light)?
To perform Eddy Current testing, the aircraft component must be made of this type of material, such as Aluminum or Steel.
What is a Conductive Material (or Metal)?
Personnel apply this liquid or gel between the probe and the aircraft part to ensure the waves transmit into the material.
What is Couplant?
For safety, Airmen must wear this smash device on their uniform to track their cumulative ionizing radiation exposure.
What is a Dosimeter (Or OSL/TLD)?
This is the official term for the amount of time the green liquid is allowed to sit on the aircraft part to soak into potential cracks.
What is Dwell Time?
To ensure flaws are detected in all directions, Airmen must magnetize the part in 2 ways: longitudinal and ____.
What is Circular Magnetization?
DOUBLE JEOPARDY!
In Eddy Current testing, this term describes the change in electrically impedance that occurs when the distance between the probe and the aircraft part varies, often due to the thickness of the aircraft's paint.
What is Lift-Off?
This handheld device, passed over the aircraft skin, converts electrical energy into sound wave and vice versa.
What is a Transducer (or Probe)?
To protect personnel on the base from scattered radiation, NDI Lab walls amd vault doors are heavily lined with this dense element.
What is Lead?
After excess penetrant is washed off, this chalky white substance is applied to act like a sponge, drawing the trapped penetrant back out of the Crack.
What is Developer?
Before an inspected part can be returned to the flightline, personnel must perform this crucial step so the past doesn't attract metal shavings during flight.
What is Demagnetization?
Beyond finding cracks, 2A7X2 personnel use ET to measure this metallurgical property to determine if an aircraft part has suffered heat damage.
What is (Electrical) Conductivity?
In addition to finding internal cracks, ultrasonic testing is heavily used by the Air Force to measure this physical dimension to check for corrosion and wear.
What is (Material) Thickness?
In traditional radiography, this physical medium must be chemically processed in a darkroom after exposure to reveal the image of the aircraft part.
What is (Radiographic) Film?
Penetrant Testing works entirely on this physical fluid phenomenon, which allows liquids to be drawn into extremely tight spaces.
What is Capillary Action?
When magnetic lines of force hit a Crack and are forced outside the part, it creates this field, which attracts the iron particles to form an indication.
What is a (Flux) Leakage Field?
These specific rotating ET probes are inserted directly into drilled areas on the aircraft to check for fastener and rivet cracks.
What are Bolthole Probes (Or Rotary Scamners)?
On the ultrasonic's machine display, a defect will cause one of the "echoes" to spike on the baseline between the initial pulse and back wall.
What is a Signal (Or Blip/Peak)?
The modern Air Force largely replaces wet chemical film with this digital process, abbreviated "CR," using reusable phosphor plates scanned into a computer.
What is Computed Radiography?