Table 6 Influential LS process parameters on tensile properties and hardness

LS/semi-crystalline polymers

VV

PV (90)

Part bed temperature (3–4 °C below melting T)

Coating, surfaces finishing

17

35

66–70 for no coating, 75 for coating

Gibson and Shi (1997)

VP

PP (0)

Fill laser power

15

40

VZ

Scan size (55–85)

5 for part orientation

40

Scan spacing (0.11–0.17), building height level (1–5)

Fill laser power (13–35), scan size (12–24)

37

Scan spacing (10–27), no orientations (6–17), no coating (34–39), coating (36–41)

33 for building height level from layer 1 to layer 5

LS/polycaprolactone

Parallel

10.5

363.4

Eshraghi and Das (2010)

Perpendicular

16.1

343.9

LS/Nylon12

02-Jun

YX

50

2260

Majewski and Hopkinson (2011)

YZ

47

2500

ZY

49

2000

LS/Nylon12

L_Virgin

35

1620

Zarringhalam et al. (2006)

L_Refresher

33

1400

L_Used

42

1625

T_Virgin

46

1760

T_Refresher

48

1760

SL/TSR

Somos

Accura

0.15/0.1/0.1

Horizontal, vertical

42–56

49–71

Rockwell

Kim and Oh (2008)

FDM/ABS

0.254

17–50

Nov-25

97

LS/PA^a

0.1/0.15

29–49

26–39

68–105

PJ/Epoxy resin

0.016

62 for horizontal

29 for vertical

87–93

LS/HIPS

Infiltrating

4.59 (7.54 after infiltrating)

–

Yan et al. (2010)

HIPS.epoxy

18.63

–

PA12

38.3

1420

PA12.OREC^b

50.9

–

Nanosilica/PA12

46.3

1980