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

Table 4

The experiment results at different levels of layer thickness () and air gap ().

Factor		Tensile strength	The rate x
		(MPa)
−1	−1	22.31	100%
−1	0	13.08	100%
−1	1	9.62	100%
0	−1	19.62	83.83%
0	0	13.08	81.99%
0	1	6.67	80.65%
1	−1	11.15	62.47%
1	0	8.08	64.53%
1	1	5.96	66.84%