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

Table 6

ANOVA table for specific wear rate.

Source	DOF	Seq SS	Adj SS	Adj MS	𝐹-test	𝑃-value	𝑃 (%)
Sliding velocity (𝐴)	2	2.06212	2.06212	1.03106	669.36	0.000	44.19
Normal load (𝐵)	2	1.08337	1.08337	0.54169	351.66	0.000	23.22
Filler content (𝐶)	2	1.06880	1.06880	0.53440	346.93	0.000	22.91
𝐴×𝐵	4	0.30911	0.30911	0.07728	50.17	0.000	6.62
𝐴×𝐶	4	0.02761	0.02761	0.00690	4.48	0.034	0.60
𝐵×𝐶	4	0.10280	0.10280	0.02570	16.68	0.001	2.20
Error	8	0.01232	0.01232	0.00154			0.26
Total	26	4.66613					100

𝑆=0.0392474, 𝑅-Sq = 99.74%, 𝑅-Sq (adj) = 99.14%.
DOF: degrees of freedom; Seq SS: sequential sum of squares; Adj SS: adjusted sum of squares; Adj MS: adjusted mean squares; 𝑃: percentage of contribution.