Modeling and Analysis for Wear Performance in Dry Sliding of Epoxy/Glass/PTW Composites Using Full Factorial Techniques

Table 7

ANOVA table for coefficient of friction.

Source	DOF	Seq SS	Adj SS	Adj MS	𝐹-test	𝑃 value	𝑃 (%)
Sliding velocity (𝐴)	2	0.0008650	0.0008650	0.0004325	102.88	0.000	12.07
Normal load (𝐵)	2	0.0015503	0.0015503	0.0007751	184.40	0.000	21.64
Filler content (𝐶)	2	0.0043983	0.0043983	0.0021991	523.15	0.000	61.40
𝐴×𝐵	4	0.0000257	0.0000257	0.0000064	1.53	0.282	0.36
𝐴×𝐶	4	0.0002117	0.0002117	0.0000529	12.59	0.002	2.95
𝐵×𝐶	4	0.0000797	0.0000797	0.0000199	4.74	0.030	1.11
Error	8	0.0000336	0.0000336	0.0000042			0.47
Total	26	0.0071643					100

𝑆 = 0.00205029, 𝑅-Sq = 99.53%, 𝑅-Sq (adj) = 98.47%.