Research Article
Investigating the Possibility to Reduce the Residual Stress Level in 2.5D Cutting Using Titanium Coated Carbide Ball End Mill
Table 10
Pareto ANOVA analysis for residual stress (feed direction).
| | Level of input parameters () | response data (dB) | | | | |
| | Level 1 ( = 1) | −166.6981 | −171.2773 | −172.3102 | −183.2197 | | Level 2 ( = 2) | −167.2302 | −185.2816 | −173.3549 | −175.4884 | | Level 3 ( = 3) | −190.8949 | −168.2643 | −179.1581 | −166.1151 | | Total of summation | −524.8232 | −524.8232 | −524.8232 | −524.8232 | | Sum of squares of differences () | 1145.7881 | 494.7852 | 81.6615 | 440.1986 | | Total summation of squares of differences = + + + | 2162.4333 | | Contribution ratio (%) | 53.0 | 22.9 | 3.8 | 20.4 |
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| | Factor | | | | | | Cumulative contribution ratio (%) | 53.0 | 75.9 | 96.3 | 100.0 | | Optimum combination of significant factor levels | |
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