wavesolder {faraway}R Documentation

Defects in a wave soldering process

Description

Components are attached to an electronic circuit card assembly by a wave-soldering process. The soldering process involves baking and preheating the circuit card and then passing it through a solder wave by conveyor. Defect arise during the process. Design is 2^{7-3} with 3 replicates.

Usage

data(wavesolder)

Format

A data frame with 16 observations on the following 10 variables.

y1
Number of defects in the first replicate
y2
Number of defects in the second replicate
y3
Number of defects in the third replicate
prebake
prebake condition - a factor with levels 1 2
flux
flux density - a factor with levels 1 2
speed
conveyor speed - a factor with levels 1 2
preheat
preheat condition - a factor with levels 1 2
cooling
cooling time - a factor with levels 1 2
agitator
ultrasonic solder agitator - a factor with levels 1 2
temp
solder temperature - facctor with levels 1 2

Source

L. Condra (1993) Reliability improvement with design of experiments. Marcel Dekker, NY.

References

M. Hamada and J. Nelder (1997) Generalized linear models for quality improvement experiments, Journal of Quality Technology, 29, 292-304


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