June 2025
Intermediate to advanced
515 pages
17h 5m
English
Quality control charts are used in manufacturing engineering to monitor process quality. The basic idea is to intervene in the process before rejects are produced. For this purpose, a random sample of n = 5 workpieces is taken from the running production every hour. Measuring machines record the quality-relevant variables and store the measured data in a file. Computer programs then calculate the arithmetic mean and standard deviation of the individual samples from these measurement results and display these quantities as a polyline in two graphic windows in each case. The upper graphic window represents the course of the mean value and the window below it represents the course of the ...
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