Research Article
Investigating the Possibility to Reduce the Residual Stress Level in 2.5D Cutting Using Titanium Coated Carbide Ball End Mill
Table 11
Pareto ANOVA analysis for residual stress (cutting direction).
| | Level of input parameters () | response data (dB) | | | | |
| | Level 1 ( = 1) | −172.5362 | −171.1702 | −172.2702 | −176.1457 | | Level 2 ( = 2) | −174.8822 | −167.8739 | −176.1846 | −169.6971 | | Level 3 ( = 3) | −176.1457 | −184.5201 | −175.1094 | −177.7214 | | Total of summation | −523.5642 | −523.5642 | −523.5642 | −523.5642 | | Sum of squares of differences () | 20.1286 | 466.1812 | 24.5393 | 108.4558 | | Total summation of squares of differences = + + + | 619.3049 | | Contribution ratio (%) | 3.3 | 75.3 | 4.0 | 17.5 |
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| | Factor | | | | | | Cumulative contribution ratio (%) | 75.3 | 92.8 | 96.8 | 100.0 | | Optimum combination of significant factor levels | |
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