Marković, Marija and Stojanović, Ivan and Runje, Biserka (2012) Propagacija nelinearnih pojava u mjernom nizu. = Propagation of nonlinear phenomena in a measurement sequence. Interdisciplinary description of complex systems, 10 (1). pp. 50-56. ISSN 1334-4684. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. . Točan broj autora: 3.
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Abstract (Croatian)
Rezultat mjerenja je brojčana procjena mjerene veličine uz pridruženu kvantitativnu analizu vjerojatnosti. Mjerenja su propisane strukture upravo zato da omoguće istraživačima, stručnjacima i drugim mjeriteljima najveću moguću pouzdanost u rezultate. Na taj način, kao sljedeće svojstvo, vjerojatnost ostvarivanja nepredviđenih ili neželjenih posljedica je minimalna. Ipak, zbog relativno velikog broja stupnjeva slobode u tipičnom mjeriteljskom slijedu, njegovog nelinearnog karaktera i nelinearnih sprezanja, općenito nije poznato u kojem iznosu varijacija u uvjetima mjerenja dovodi do znatno veće varijacije u mjerenoj veličini ili njenim izvedenicama. U ovom radu razmatramo potankosti navedenog utjecaja varijacija i diskutiramo o mogućim rezultatima. Kao ilustraciju razmatranih utjecaja prikazujemo rezultate koji se odnose na relativno jednostavno i uobičajeno mjerenje površinske hrapavosti objekata u čvrstom stanju. Pokazano je kako nema znatnih povećanja varijacija u početnim parametrima duž mjerniteljskog niza.
Abstract
Measurements provide one with results, in the form of both quantitative estimates of measured quantity along with attributed quantitative probabilistic analysis. Measurement is prescribed precisely in order to enable researchers, experts or other measurers to obtain maximum confidence in its results. In that way, the probability of obtaining unpredicted or unwanted consequences is minimised. Yet, owing to a rather large number of degrees of freedom in a typical measurement sequence, its nonlinear character and nonlinear couplings, in general it is not known in what amount a variation in measurement conditions brings about significantly larger variations in measured quantities or its derivatives. In this article we treat in some details the aforementioned influence of variations and argue about possible results. In order to illustrate the treated influences we present results of a rather simple and common measurement of surface roughness of solid state objects. It is argued that there is no significant augmentation of variations in results of initial measurements throughout measurement sequence.
| Item Type: | Article (["eprint_fieldopt_article_type_article" not defined]) |
|---|---|
| Uncontrolled Keywords: | nelinearnost; mjerenje; kompleksnost; hrapavost |
| Keywords (Croatian): | nonlinearity; measurement; complexity; roughness |
| Subjects: | TECHNICAL SCIENCE > Mechanical Engineering |
| Divisions: | 1100 Department of Welded Structures > 1120 Chair of Materials Protection 800 Department of Quality > 810 Chair of Precise Measurement and Quality |
| Indexed in Web of Science: | No |
| Indexed in Current Contents: | No |
| Date Deposited: | 14 Mar 2016 12:18 |
| Last Modified: | 03 Sep 2018 11:50 |
| URI: | http://repozitorij.fsb.hr/id/eprint/5237 |
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