Description

Data on an experiment concerning the production of leaf springs for trucks. A 2^{5-1} fractional factorial experiment with 3 replicates was carried out with objective of recommending production settings to achieve a free height as close as possible to 8 inches.

Usage

Format

A data frame with 48 observations on the following 6 variables.

B

furnace temperature - a factor with levels + -

C

heating time - a factor with levels + -

D

transfer time - a factor with levels + -

E

hold-down time - a factor with levels + -

O

quench oil temperature - a factor with levels + -

height

leaf spring free height in inches

Source

J. J. Pignatiello and J. S. Ramberg (1985) Contribution to discussion of offline quality control, parameter design and the Taguchi method, Journal of Quality Technology, 17 198-206.

References

P. McCullagh and J. Nelder (1989) "Generalized Linear Models" Chapman and Hall, 2nd ed.