Research Article
Study of the Effect of Process Parameters on Surface Profile Accuracy in Single-Point Incremental Sheet Forming of AA1050-H14 Aluminum Alloy
Table 5
ANOVA results for side angle error.
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 |  | Source | DF | Adj SS | Adj MS | F | value |  | 
 |  | Main effects | 2 | 9.67 | 4.83 | 65.82 | <0.01 |  | s | 1 | 2.88 | 2.88 | 39.23 | <0.01 |  | t | 1 | 6.59 | 6.59 | 89.76 | <0.01 |  | Residual error | 42 | 3.09 | 0.07 |  |  |  | Pure error | 41 | 3.01 | 0.07 |  |  |  | Total | 44 |  |  |  |  |  | Model summary | R-sq 75.81% | R-sq (adj) 74.66% | R-sq (pred) 72.22% |  | 
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