EngrExpt (version 0.1-6)

applicat: Application of powder coating

Description

As described in Nelson, Coffin and Copeland (2003), The application of powder coating (a type of paint used on appliances and, in limited settings, cars) is done by spraying the material through a gun that has an electrical charge on it. There are three factors to consider in setting up the application booth: the gun distance from the target item, the charge and the pressure (flow rate) of the material through the gun. This data set contains data from 18 runs.

References

Peter R. Nelson, Marie Coffin and Karen A. F. Copeland (2003), Introductory Statistics for Engineering Experimentation, Elsevier. (Appendix A)

Examples

str(applicat)
dotplot(distance ~ gloss|flowrate, applicat, groups = charge,
        type = c("p","a"), layout = c(1,2),
        ylab = "Gun distance from target (in.)",
        strip = FALSE, strip.left = TRUE,
        auto.key = list(columns = 3, lines = TRUE), xlab =
"Gloss for two flow rates (gm/min) and three charges (kvolts)")
dotplot(charge ~ gloss|flowrate, applicat, groups = distance, 
        type = c("p","a"), layout = c(1,2),
        ylab = "Charge (kvolts)",
        strip = FALSE, strip.left = TRUE,
        auto.key = list(columns = 3, lines = TRUE), xlab =
"Gloss for two flow rates (gm/min) and three distances from target (in)")