The Quantitative Research of Interaction between Key Parameters and the Effects on Mechanical Property in FDM

Table 1

The fabrication parameters and the setting of values of the parameters under disparate levels.

Process parameters	Symbol	Unit	Low	Middle	High
			Level (−1)	Level (0)	Level (+1)
Layer thickness		mm	0.05	0.15	0.25
Deposition velocity		mm/s	60	80	100
Air gap		mm	0	0.2	0.4