Ovisnost ocijenjene sposobnosti procesa o prikupljanju i obradi podataka

Šefer, Mladen (2012) Ovisnost ocijenjene sposobnosti procesa o prikupljanju i obradi podataka. Diploma work - Pre-Bologna programme. Grafički fakutet. [Mentor: Milčić, Diana].

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Abstract

Aktualni standardi za kontrolu procesa grafičke proizvodnje propisuju ciljane vrijednosti i tolerancije pojedinih parametara procesa. Usuglase li se proizvođač i naručitelj da će se proizvođač pridržavati standarda, time je utvrđeno samo to kakav bi proizvod trebao biti. S obzirom da se u svakom proizvodnom procesu javljaju greške, određeni udio jedinica koje izlaze iz procesa neće biti sukladan standardu. Prihvatljiv udio ne sukladnih jedinica je stvar dogovora naručitelja i proizvođače i nije propisan standardima. Osim toga, standard ne propisuje niti način prikupljanja podataka. Naime, utvrđuje ciljane vrijednosti i tolerancije parametara te inzistira na njihovoj ujednačenosti po zonama otiska uz određeno dozvoljeno odstupanje. S obzirom da nije propisan način prikupljanja podataka po zonama, nije moguće jednoznačno odrediti centriranost i rasipanje procesa, to jest nije moguće izraziti sposobnost procesa. Stoga je jedino moguće utvrditi je li promatrana jedinica sukladna standardu, a nije moguće jednoznačno utvrditi koliki je udio jedinica koje izlaze iz nekog procesa sukladan standardu. U ovome radu biti će ispitani različiti načini prikupljanja podataka i njihov utjecaj na ocjenu sposobnosti procesa.

Item Type:	Diploma work - Pre-Bologna programme
Mentor name:	Milčić, Diana
Defence date:	6 December 2012
Abstract in english:	The current standards for the process control of graphic production proscribe the target values and the tolerance of particular parameters of the process. When the manufacturer and customer agree that the manufacturer will adhere to the standards, they only determine what the product should be like. Given that mistakes occur in every production process, a certain number of units produced in the process will not be consistent with the standard. The acceptable portion of defective units depends on the agreement between the manufacturer and customer and is not proscribed by the standards. Moreover, the standard does not even prescribe the method for collecting the data. It determines the target values and the tolerance parameters and insists on their equality in the print zones, allowing certain deviation. Because the method for collecting the data is not prescribed, it is not possible to unequivocally determine if the process is centred and the amount of dissipation in the process. In other words, it is not possible to express the process capability. Therefore, it is only possible to determine if the observed unit is compliant to the standard, but it is not possible to unequivocally determine the proportion of units that come out of a process which are compliant with the standard. Different ways of collecting data and their influence on rating the process capability will be studied in this paper.
Uncontrolled Keywords:	sposobnost procesa, prikupljanje podataka, obrada podataka
Keywords in english:	process capability, data collection, data analysis
Subjects:	TECHNICAL SCIENCES > Graphic Technology
Institution:	Grafički fakutet
City:	Zagreb
Number of Pages:	49
Callnumber:	mil 2012 šef
Inventory number:	D1014
Depositing User:	Dora Budić
Status:	Unpublished
Date Deposited:	24 Apr 2014 07:53
Last Modified:	24 Apr 2014 07:53
URI:	http://eprints.grf.unizg.hr/id/eprint/1815

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