(Stellenbosch : Stellenbosch University, 1991) Botha, Adriaan Hendrikus; Gerischer, R. R. G.; Stellenbosch University. Faculty of AgriSciences. Dept. of Forest and Wood Sciences.
ENGLISH ABSTRACT: In every manufacturing operation there is variability, and the variability becomes evident whenever a quality characteristic of the product is measured. The concepts of variability, capability and statistical process control are explained, and the various capability indices are briefly discussed. Since it is important to have a reliable measurement system before statistical process control can be implemented in a manufacturing system, some examples are given of ways to determine precision of measurement and inspector accuracy and reproducibility. Several case studies showing various procedures for the determination of process capability are presented, and other potential applications in future projects are outlined.