MATERIALS AND PROCESSES NDT
1. what is the most frequent method of NDT
*Answer√√ VT - Visual testing
2. what is the main disadvantage of visual testing
*Answer√√ only surface conditions can be evaluated
3. what can liquid penetrant testing be used on
*Answer√√ 1. ferrous/non-ferrous metals
2. nonabsorbent material
3. nonporous
4. what is dwell time for PT
*Answer√√ amount of time liquid penetrant is left on the surface
5. what is imperative when performing a PT inspection
*Answer√√ surface is clean and free of any foreign materials or liquids that might block the
penetant from entering voids or fissures
6. what type of method is Eddy Current - ET
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20
, *Answer√√ electromagnetic testing method
7. 2 examples of Volumetric defects
*Answer√√ porostity and inclusions
8. 2 examples of planar defects
*Answer√√ cracks and lack of fusion [ LOF ]
9. RT is best used to find Volumetric or Planar defects
*Answer√√ Volumetric
10. UT is best used to find Volumetric or Planar defects
*Answer√√ Planar
11. what is manufacturing
*Answer√√ making raw materials into finished products
12. what are engineered materials
*Answer√√ materials including metals and plastics that are solid and have strength at room
temperature
13. how does manufacturing convert raw materials
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20
, *Answer√√ shape changes energy form
process ettects
auxillary steps
14. how can shape changing be accomplished
*Answer√√ casting forming
material removal
joining
15. what are the 12 human factors that can affect quality testing
*Answer√√ lack of communica-tion
lack of resources
complacency
pressure
lack of knowledge
lack of assertiveness
distraction
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20
1. what is the most frequent method of NDT
*Answer√√ VT - Visual testing
2. what is the main disadvantage of visual testing
*Answer√√ only surface conditions can be evaluated
3. what can liquid penetrant testing be used on
*Answer√√ 1. ferrous/non-ferrous metals
2. nonabsorbent material
3. nonporous
4. what is dwell time for PT
*Answer√√ amount of time liquid penetrant is left on the surface
5. what is imperative when performing a PT inspection
*Answer√√ surface is clean and free of any foreign materials or liquids that might block the
penetant from entering voids or fissures
6. what type of method is Eddy Current - ET
1/
20
, *Answer√√ electromagnetic testing method
7. 2 examples of Volumetric defects
*Answer√√ porostity and inclusions
8. 2 examples of planar defects
*Answer√√ cracks and lack of fusion [ LOF ]
9. RT is best used to find Volumetric or Planar defects
*Answer√√ Volumetric
10. UT is best used to find Volumetric or Planar defects
*Answer√√ Planar
11. what is manufacturing
*Answer√√ making raw materials into finished products
12. what are engineered materials
*Answer√√ materials including metals and plastics that are solid and have strength at room
temperature
13. how does manufacturing convert raw materials
2/
20
, *Answer√√ shape changes energy form
process ettects
auxillary steps
14. how can shape changing be accomplished
*Answer√√ casting forming
material removal
joining
15. what are the 12 human factors that can affect quality testing
*Answer√√ lack of communica-tion
lack of resources
complacency
pressure
lack of knowledge
lack of assertiveness
distraction
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20
