FDM

Question 1

In FDM parts…

Answer 1

are formed by deposition of the fused material in a layer-wise manner.

Question 2

FDM technique is used…

Answer 2

in modeling, prototyping and production applications

Question 3

ABS (used in FDM)

Answer 3

Acrylonitrile Butadiene Styrene

Question 4

PLA (used in FDM)

Answer 4

Polylactide

Question 5

PVA (used in FDM)

Answer 5

Polyvinyl Alcohol (water soluble)

Question 6

HIPS (used in FDM)

Answer 6

High-Impact Polystyrol (similar to ABS)

Question 7

ABS and PLA are…

Answer 7

among the dominant and common materials used in this process.

Question 8

ABS is polished with…

Answer 8

Acetone Vapor.

Question 9

PLA is polished…

Answer 9

THF (Tetrahydrofuran)

Question 10

PVA is polished with…

Answer 10

water.

Question 11

Defined road width is required to have a width…

Answer 11

1.2 to 1.5 times the diameter of the nozzle.

Question 12

Formula to determine volumetric flow rate (Q)

Answer 12

Q = (RW) * (ST) * (v)

Question 13

Formula to determine filament feed rate (H)

Answer 13

H = F * Q / Af

Question 14

Formula to determine roller speed (n)

Answer 14

n = H / 2 * pi * r

Question 15

RW in Q = (RW) * (ST) * (v) is:

Answer 15

Road Width in mm

Question 16

ST in Q = (RW) * (ST) * (v) is:

Answer 16

Slice Thickness (layer thickness) in mm

Question 17

v in Q = (RW) * (ST) * (v) is:

Answer 17

head speed in m/s

Question 18

Q in Q = (RW) * (ST) * (v) is:

Answer 18

volumetric flow rate in m3/s

Question 19

H in H = F * Q / Af is:

Answer 19

Filament feed rate

Question 20

F in H = F * Q / Af is:

Answer 20

Friction factor, ideal gripping F = 1

Question 21

Af in H = F * Q / Af is:

Answer 21

Cross-sectional area of the filament in mm2

Question 22

n in n = H / 2 * pi * R is:

Answer 22

Roller speed

Question 23

R in n = H / 2 * pi * R is:

Answer 23

Roller groove radius