Liquid Penetrant
What are the two types of liquid penetrant?
Flourescent and Visible
What are the two types of magnetic field?
Circular and Longitudinal
A higher ____ leads to lower penetration in a part?
Frequency
The region where interference occurs in the sound wave?
Near Field
What are the five types of radiation?
Alpha, Beta, Gamma, X-ray, Neutron
What kind of discontinuities are detected with Liquid Penetrant?
Surface breaking
When is Direct urrent used in liue of Alternating Current?
When looking for subsurface defects
What does the display on an eddy current machine actually read?
Impedance
What type of ultrasonic inspection is used to go around part geometry or fastener holes?
Angle Beam
What material is the window made of in an LPX-160?
Beryllium
What is the term for a tendency of liquid to penetrate or migrate into small openings such as cracks?
Capillary action
What is the term for a metals capability to remain magnetized after the magnetic field has been removed
Retentivity
Eddy current probes can be classified as what three types?
Differential, Absolute, and InternalReference
What are the three types of ultrasonic waves?
Longitudinal, shear, surface
Double points: (Rayleigh waves)
What is the RASP dose limit per quarter?
3.0 rem
What are the three methods for penetrant application?
Swab/Brush, Spray and Immersion
What shape are magnetic particles to facilitate better magnetization?
Oblong or rod like
The intensity of eddy currents decreases ____ with depth in a material?
exponentially
What law applies to the incident angle?
Snell's Law
What are the two types of secondary dosimeter?
Electronic and Ion chamber
How long is the warm up time for a mercury vapor bulb blacklight?
5-15 minutes
What is the minumum flash point for wet method oil vehicles?
94 C (200 F)
Which law applies to the secondary magnetic field as it relates to is opposition of the primary magnetic field?
Lenz's Law
What two basic categories can ultrasonic inspections be seperated into?
Contact and immersion
What year were X-Rays discovered?
1895