Analysis and optimization of mass percentage of zycoprint polymer and abrasives in achieving stability of suspension mixture in abrasive water jet machining

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Table 6

ANOVA results of the LR model for the percentage of suspension volume and .

Source		DoF*		Seq. SS*		Contribution		Adj. SS*		Adj. MS*		F*- ratio (obtained)	F*-ratio (critical)	p-value		Remarks

Model		2		146.542		78.79%		146.542		73.271		11.14	F (2,8) = 4.46	0.010		Significant
Linear		2		146.542		78.79%		146.542		73.271		11.14	F (2,8) = 4.46	0.005		Significant
ω_p		1		1.500		0.81%		1.500		1.500		0.23	F (1,8) = 5.32	0.650		Insignificant
ω_a		1		145.042		77.98%		145.042		145.042		22.05	F (1,8) = 5.32	0.003		Significant
Error		6		39.458		21.21%		39.458		6.576
Total		8		186.000		100.00%

Model	3		13.8889		95.42%		13.8889		4.6296		34.71		F (3,8) = 4.07		0.001	Significant
Linear	2		12.2084		83.88%		2.0242		1.0121		7.59		F (2,8) = 4.46		0.023	Significant
ω_p	1		12.0417		82.73%		1.8575		1.8575		13.93		F (1,8) = 5.32		0.014	Significant
ω_a	1		0.1667		1.15%		0.1667		0.1667		1.25		F (1,8) = 5.32		0.314	Insignificant
Square	1
ω_p × ω_p	1		1.6806		11.55%		1.6806		1.68056		12.60		F (1,8) = 5.32		0.016	Significant
Error	5		0.6667		4.58%		0.6667		0.1333
Total	8		14.5556		100%

^*DoF: Degree of freedom; Seq. SS: Sequential sum of squares; Adj. SS: Adjusted sum of squares; Adj. MS: Adjusted mean square; F-ratio: Fisher's- ratio.

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