Materials and Processes NDT Study Guide & Non-Destructive Testing Revision
Notes
what is the most frequent method of NDT - ✔✔VT - Visual testing
what is the main disadvantage of visual testing - ✔✔only surface conditions can be evaluated
what can liquid penetrant testing be used on - ✔✔1. ferrous/non-ferrous metals
2. nonabsorbent material
3. nonporous
what is dwell time for PT - ✔✔amount of time liquid penetrant is left on the surface
what is imperative when performing a PT inspection - ✔✔surface is clean and free of any
foreign materials or liquids that might block the penetant from entering voids or fissures
what type of method is Eddy Current - ET - ✔✔electromagnetic testing method
2 examples of Volumetric defects - ✔✔porostity and inclusions
2 examples of planar defects - ✔✔cracks and lack of fusion [ LOF ]
RT is best used to find Volumetric or Planar defects - ✔✔Volumetric
UT is best used to find Volumetric or Planar defects - ✔✔Planar
, what is manufacturing - ✔✔making raw materials into finished products
what are engineered materials - ✔✔materials including metals and plastics that are solid and
have strength at room temperature
how does manufacturing convert raw materials - ✔✔shape changes
energy form
process effects
auxillary steps
how can shape changing be accomplished - ✔✔casting
forming
material removal
joining
what are the 12 human factors that can affect quality testing - ✔✔lack of communication
lack of resources
complacency
pressure
lack of knowledge
lack of assertiveness
distraction
stress
lack of teamwork
lack of awareness
fatigue
Notes
what is the most frequent method of NDT - ✔✔VT - Visual testing
what is the main disadvantage of visual testing - ✔✔only surface conditions can be evaluated
what can liquid penetrant testing be used on - ✔✔1. ferrous/non-ferrous metals
2. nonabsorbent material
3. nonporous
what is dwell time for PT - ✔✔amount of time liquid penetrant is left on the surface
what is imperative when performing a PT inspection - ✔✔surface is clean and free of any
foreign materials or liquids that might block the penetant from entering voids or fissures
what type of method is Eddy Current - ET - ✔✔electromagnetic testing method
2 examples of Volumetric defects - ✔✔porostity and inclusions
2 examples of planar defects - ✔✔cracks and lack of fusion [ LOF ]
RT is best used to find Volumetric or Planar defects - ✔✔Volumetric
UT is best used to find Volumetric or Planar defects - ✔✔Planar
, what is manufacturing - ✔✔making raw materials into finished products
what are engineered materials - ✔✔materials including metals and plastics that are solid and
have strength at room temperature
how does manufacturing convert raw materials - ✔✔shape changes
energy form
process effects
auxillary steps
how can shape changing be accomplished - ✔✔casting
forming
material removal
joining
what are the 12 human factors that can affect quality testing - ✔✔lack of communication
lack of resources
complacency
pressure
lack of knowledge
lack of assertiveness
distraction
stress
lack of teamwork
lack of awareness
fatigue
