Surface Metrology Quiz #1

Question 1: Which of the following parameters are related to the height distribution?

A Rz

B Rq

C Rsk

D Rmr

Question 2: Which of the below height distribution graphs corresponds to a negative skewness?

A Graph 1

B Graph 2

C Neither

Question 3: Which of the following statements are true?

A It is mandatory to use a Gaussian filter for roughness parameters

B Some surface texture parameters can be calculated without any filter

C Without any specific indication, the Gaussian filter should be used

D The Gaussian filter is best used on structured and stratified surfaces

Question 4: Which of the following instrument technologies have a dedicated document in the new areal standard?

A White-light interferometry

B Fringe projection

C Areal stylus profilometry

D Chromatic confocal probe

E Scanning electron microscopy

F Confocal microscopy

Question 5: In which of the following cases it is necessary to evaluate surface texture on a surface instead of on a profile?

A When the surface is isotropic

B When the surface is structured

C When the surface contains scratches in various directions

D When the surface has very small grains equally distributed

E When the surface has big grains/holes unequally distributed

F When roughness is above 10 µm

Question 6: Feature parameters are areal parameters...

A that are not related to surface heights

B that quantify topological features

C that do not take into account all surface points

D that are calculated after a height discrimination

Question 7: Wolf pruning is...

A used in the calculation of spacing parameters

B used in segmentation, to reduce the number of features

C based on a percentage of Sz

D a special type of nesting index

Question 8: Which of the following statements about volume parameters are true?

A Vmp could be used in replacement of Spk

B Volume parameters contain material and void volume

C The value of Vmc is always greater than the value of Vmp

D Volume parameters are calculated from the Abbott curve

Question 9: Which surface characteristics are assessed with Str?

A Surface complexity

B Surface isotropy

C Surface flatness

D Surface smoothness

Question 10: Which of the following statements about saddle points are true?

A They are located at the intersection of a course line and a ridge line

B They are points where all downward paths converge

C They are points used in the pruning process

D They are points located exactly between a peak and a pit