Analysis of Clad Bead Width Response on Mild Steel Metal Geometry Using Statistics

Abstract

The research showed the statistical analysis of clad bead width on mild steel metal geometry. The statistical analysis was performed using response surface method of statistics. The analysis of variance (ANOVA) shows that the Model F-value of 8.95 which implies that the model is significant. There is only a 0.23% chance that an F-value this large could occur due to noise. Probability values of less than 0.0500 indicate model terms are significant. The lack of fit for F-value of 1.05 implies the lack of fit is not significant relative to the pure error. There is a 51.67% chance that a Lack of Fit for F-value this large could occur due to noise. Non-significant lack of fit is good and makes the model more fit. The coefficient of determination of the parameters (R-squared) is 0.9249. The predicted R-Squared of 0.9249 is close to the adjusted R-Squared of 0.8215; however, the difference is not more than 0.2 which is of reasonable agreement. Adequate Precision measures the signal to noise ratio of 10.757, which indicates an adequate signal in the data. The fraction of design space plot, perturbation plot, normal probability plot and the cook’s distance plot show less residuals and more fitness of the data which is good in making the parameters very efficient and more effective in modeling the process. The research achieved reasonable and appropriate statistical results which portray the parameters in the system. Finally, the results are recommended for understanding the influence of the parameters in clad height of reinforcement on mild steel cladding weld metals geometry.