Ajuste preventivo versus ajuste corretivo no controle on-line de processo do número de não-conformidades num item inspecionado
In production lines, the entire process is bound to unexpected happenings which may cost losing the production quality. Thus, it means losses to the manufacturer. Identify such causes and remove them is the task of the processing management. The on-line control system consists of periodic inspect...
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| Format: | Dissertação |
| Jezik: | por |
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Universidade Federal do Rio Grande do Norte
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| Online pristup: | https://repositorio.ufrn.br/jspui/handle/123456789/18637 |
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| Sažetak: | In production lines, the entire process is bound to unexpected happenings which
may cost losing the production quality. Thus, it means losses to the manufacturer.
Identify such causes and remove them is the task of the processing management. The
on-line control system consists of periodic inspection of every month produced item.
Once any of those items is quali ed as not t, it is admitted that a change in the
fraction of the items occurred, and then the process is stopped for adjustments. This
work is an extension of Quinino & Ho (2010) and has as objective main to make the
monitoramento in a process through the control on-line of quality for the number of
non-conformities about the inspected item. The strategy of decision to verify if the
process is under control, is directly associated to the limits of the graphic control of
non-conformities of the process. A policy of preventive adjustments is incorporated in
order to enlarge the conforming fraction of the process. With the help of the R software,
a sensibility analysis of the proposed model is done showing in which situations it is
most interesting to execute the preventive adjustment |
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