PP2355 NDT
What are the two methods for using ultrasonic testing on any material?
Immersion Testing
Contact Testing
Pulse Echo
Through Transmission
What 3 ways can ultrasonic testing be conducted?
Through transmission
Pulse echo
Resonance
Angle beam testing
What is a benefit to ultrasonic testing versus X-ray testing?
Can detect Minute Cracks
Can produce higher resolution photograph
Ultrasonic testing is better than X-ray testing
What is the difference between through transmission compared to pulse echo?
Through transmission is more accurate
Through transmission is easier to use
Through transmission travels through the part and does not bounce back.
How to determine the thickness of the material with pulse echo
Initial pulse and first reflection
Initial pulse and final pulse
Can not determine thickness
What induces a vibration through a piezoelectric quartz?
Transducer
Electronic Oscillator
Amplifier
What produces AC Current?
Transducer
Electronic Oscillator
Amplifier
What helps increase the strength of an AC current?
Transducer
Electric Oscillator
Amplifier
What is the definition of a Piezoelectricity?
Electricity resulting from a material that holds electric charge naturally
Electricity resulting from pressure, latent heat, changing mechanical energy to electrical energy
True or false: for eddy current testing, primer paint and anodized films must be removed first.
True
False
Which of these nondestructive testing methods is suitable for the inspection of most metals, plastics, and ceramics for surface and subsurface defects?
Eddy current inspection
Magnetic Particle Inspection
N Ultrasonic Inspection
Magnetic particle inspection is used primarily to detect
Distortion.
Deep subsurface flaws.
Flaws on or near the surface.
Liquid penetrant inspection methods may be used on which of the following?
Porous plastics
Ferrous metals
Nonferrous metals
Smooth-primer sealed wood
Non-porous plastics
Which of these nondestructive testing methods is suitable for the inspection of most metals, plastics, and ceramics for surface and subsurface defects?
Eddy current inspection.
Magnetic particle inspection.
Ultrasonic inspection.
What nondestructive testing method requires little or no part preparation, is used to detect surface or near-surface defects in most metals, and may also be used to separate metals or alloys and their heat-treat conditions?
Eddy Current
Ultrasonic
Magnetic Particle
What method of magnetic particle inspection is used most often to inspect aircraft parts for invisible cracks and other defects?
Residual
Inductance
Continuous
What is extremely reliable for rapid detection of defects on or near the surface on ferrous metals.
Eddy currents
Magnetic Particle
Ultrasonic
The factors of radiographic exposure are so interdependent that it is necessary to consider all factors for any particular radiographic exposure. These factors include, but are not limited to, the following
Material thickness and density
Shape and size of the object
Type of defect to be detected
Characteristics of X-ray machine used
The exposure distance
The exposure angle
Film characteristics
Type of intensifying screen, if used
The testing medium that is generally used in magnetic particle inspection utilizes a ferromagnetic material that has
High permeability and low retentivity.
Low permeability and high retentivity.
High permeability and high retentivity.
Which statement relating to the residual magnetizing inspection method is true?
Subsurface discontinuities are made readily apparent.
It is used in practically all circular and longitudinal magnetizing procedures.
It may be used with steels which have been heat treated for stressed applications
A mechanic has completed a bonded honeycomb repair using the potted compound repair technique. What nondestructive testing method is used to determine the soundness of the repair after the repair has cured?
Eddy Current
Metallic Ring
Ultrasonic
What two types of indicating mediums are available for magnetic particle inspection?
Iron and ferrous oxides
Wet and dry
High retentivity and low permeability
Which of the following materials may be inspected using the magnetic particle inspection method?
Magnesium alloys.
Aluminum alloys.
Iron alloys.
Copper alloys.
One way a part may be demagnetized after magnetic particle inspection is by
Subjecting the part to high voltage, low amperage ac.
Slowly moving the part out of an ac magnetic field of sufficient strength
Slowly moving the part into an ac magnetic field of sufficient strength.
Which type of crack can be detected by magnetic particle inspection using either circular or longitudinal magnetization?
45º
Longitudinal
Transverses
To detect a minute crack using dye penetrant inspection usually requires
Developer applied to flat surface
Longer than normal Penetrating time
Surface highly polished
When checking an item with the magnetic particle inspection method, circular and longitudinal magnetization should be used to
Reveal all possible defects.
Evenly magnetize the entire part.
Ensure uniform current flow.
(1) In nondestructive testing, a discontinuity may be defined as an interruption in the normal physical structure or configuration of a part. (2) A discontinuity may or may not affect the usefulness of a part. Regarding the above statements,
1 is true
2 is true
1 and 2 is true
Non are true
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