Pregled različitih pristupa za procjenu mjerne nesigurnosti

undergraduate thesis

• Title (english): Overview of the different approaches for evaluating measurement uncertainty
• Author: Filip Fekonja
• Mentor: Biserka Runje (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2018-03-01, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

Usporedno s napretkom industrije i tehnologije dolazi do potrebe za povećanjem točnosti iskazivanja karakteristika proizvoda kojima se bavi strojarska industrija, odnosno dolazi do potrebe za iznošenjem što preciznijeg opisivanja karakteristika tih predmeta, pa time i samih izmjera. Mjerenja se u industriji provode svaki dan, a njihova točnost se određuje s obzirom na propisane zahtjeve. U nekim slučajevima traži se niska točnost, dok neki iziskuju veoma visoku točnost izmjerenih podataka. Međutim, bez obzira na zahtjeve, nemoguće je dati potpuno točnu vrijednost mjerenja. Iz tog razloga se svaki rezultat mjerenja iskazuje uz određenu mjernu nesigurnost, koja se može procijeniti različitim metodama. Cilj ovog rada je dati teorijski pregled normativnih dokumenata za različite postupke procjene mjerne nesigurnosti rezultata mjerenja koji se najčešće koriste u strojarskoj industriji. Također se obrađuju i primjeri procjena mjerne nesigurnosti za sve četiri različite metode obrađene u ovom radu. Kroz teorijski dio obrađeni su i objašnjeni postupci procjene nesigurnosti, dok je kroz praktične primjere konkretno prikazana primjena normi koja daje na uvid opsežnost, potrebno vrijeme i predznanje, te donosi zaključak o pravilnoj primjeni pojedine metode ovisno o zadanom problemu procjene mjerne nesigurnosti zadanog mjerenja.

Abstract (english)

With the progress of the industry, the need to increase accuracy of product characteristics also increased. In other words, the need to increase precision of product descriptive characteristics, which include product measurements appeared. Measurements in industry are carried out every day, and their precision is determined according to specified requirements. In some cases, a low accuracy satisfies the needs, but in other a higher accuracy has to be provided. However, every conducted measurement process has its own uncertainty, which is of great importance. That is the reason why measuring uncertainty is provided with every measured result. The mentioned measurement uncertainty is evaluated using different methods. This study gives theoretical overview of normative documents for different types of measuring uncertainty evaluation which are most commonly used in mechanical industry. It also gives examples of evaluation for every one of the four mentioned methods. Theoretical part examines and explaines procedures of measuring uncertainty, while a practical part gives insight in application of the procedures while presenting extent, necessary time and foreknowledge, and it also gives conclusion about a correct use of specific method depending on given problem of evaluation measuring uncertainty.

• Keywords: Mjerna nesigurnost; procjena mjerne nesigurnosti; metode procjene mjerne nesigurnosti
• Keywords (english): Measuring uncertainty; measuring uncertainty evaluation; measuring uncertainty evaluation methods
• Language: croatian
• URN:NBN: urn:nbn:hr:235:977633
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-05-22 22:01:12