NDT Introduction Midterm Test Study Guide & Non-Destructive Testing Fundamentals
Revision Notes
A Reliable Product - ✔✔What is the customer demanding in a product?
100% reliability - ✔✔What are high risk customers demanding in a product?
Eddy Current Testing - ✔✔(ET)
Magnetic Particle Testing - ✔✔(MT)
Liquid Penetrant Testing - ✔✔(PT)
Radiographic Testing - ✔✔(UT)
Irregular Discontinuities - ✔✔What will nonmetallic inclusions look like in an ingot?
Round in Shape - ✔✔What shape are porosity found to have?
Discontinuities - ✔✔What are porosity's and nonmetallic inclusions
No - ✔✔Does the "hot top" eliminate all the nonmetallic inclusions, has-bubble porosity, and
pipe?
Yes - ✔✔Would cropping the top of the ingot remove many discontinuities?
, No - ✔✔Cropping will eliminate all of the "pipe" in the ingot except in those cases where
intermittent shrinkage cavities extend deep in the ingot. But are all discontinuities eliminated by
cropping?
An article - ✔✔Nondestructive tests are methods of detecting interruptions in the normal or
physical structure of _________?
A discontinuity - ✔✔Any crack, break, or flaw in the continuity of the physical structure of an
article is called__________?
Ingot - ✔✔Many discontinuities have their origin in the refining process and are in the molten
metal poured into the ___________ mold.
Nonmetallic - ✔✔Slag impurities are not entirely in the refining process and are found in the
ingot as foreign material called _________ inclusions.
An irregular - ✔✔Nonmetallic inclusions are ragged when they harden and take _________
shape.
Porosity - ✔✔Due to the refining process itself, all of the material forming gas is not removed
from the molten metal. This causes entrapped gas bubbles to form which are called?
Round, Round - ✔✔Gas-bubble porosity in the ingot is like bubbles in a bottle of pop. When
the ingot hardens, the porosity takes on the shape of the gas bubbles that are __________ or
nearly ____________.
Shrinkage - ✔✔Another discontinuity is formed as the molten metal shrinks as it hardens. As a
result, the top of the ingot has_________.
Revision Notes
A Reliable Product - ✔✔What is the customer demanding in a product?
100% reliability - ✔✔What are high risk customers demanding in a product?
Eddy Current Testing - ✔✔(ET)
Magnetic Particle Testing - ✔✔(MT)
Liquid Penetrant Testing - ✔✔(PT)
Radiographic Testing - ✔✔(UT)
Irregular Discontinuities - ✔✔What will nonmetallic inclusions look like in an ingot?
Round in Shape - ✔✔What shape are porosity found to have?
Discontinuities - ✔✔What are porosity's and nonmetallic inclusions
No - ✔✔Does the "hot top" eliminate all the nonmetallic inclusions, has-bubble porosity, and
pipe?
Yes - ✔✔Would cropping the top of the ingot remove many discontinuities?
, No - ✔✔Cropping will eliminate all of the "pipe" in the ingot except in those cases where
intermittent shrinkage cavities extend deep in the ingot. But are all discontinuities eliminated by
cropping?
An article - ✔✔Nondestructive tests are methods of detecting interruptions in the normal or
physical structure of _________?
A discontinuity - ✔✔Any crack, break, or flaw in the continuity of the physical structure of an
article is called__________?
Ingot - ✔✔Many discontinuities have their origin in the refining process and are in the molten
metal poured into the ___________ mold.
Nonmetallic - ✔✔Slag impurities are not entirely in the refining process and are found in the
ingot as foreign material called _________ inclusions.
An irregular - ✔✔Nonmetallic inclusions are ragged when they harden and take _________
shape.
Porosity - ✔✔Due to the refining process itself, all of the material forming gas is not removed
from the molten metal. This causes entrapped gas bubbles to form which are called?
Round, Round - ✔✔Gas-bubble porosity in the ingot is like bubbles in a bottle of pop. When
the ingot hardens, the porosity takes on the shape of the gas bubbles that are __________ or
nearly ____________.
Shrinkage - ✔✔Another discontinuity is formed as the molten metal shrinks as it hardens. As a
result, the top of the ingot has_________.
