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Feature Size measurement: Porosity, Grain, and Reinforcement

1. Which of following can NOT increase resolution (tick all which applies):

a: increasing incident voltage b: increased vacuum c: increasing beam spot size d: decreasing working distance e: All of the Above

2. What is the dark region in this image?

a: Matrix b: Reinforcement c: Grain d: Porosity

3. What is the dark region in this image?

a: Matrix b: Reinforcement c: Grain d: Porosity

4. What is the estimated matrix phase content in the following image?

a: 30% b: 45% c: 60% d: 75 %

5. In which case the porosity is of biggest size?

a: A b: B c: C d: D

6. In which case the porosity content is highest?

a: A b: B c: C d: D

7. In which of the following, the grain size is biggest?

a: A b: B c: C d: D

8. In which of the following, the grain size is smallest:

a: A b: B c: C d: D

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