Akreditacija postupka ispitivanja motora s unutarnjim izgaranjem

Lončarević, Šimun (2016) Akreditacija postupka ispitivanja motora s unutarnjim izgaranjem. = Accreditation of the process of testing internal combustion engines. Master's thesis (Bologna) , Sveučilište u Zagrebu, Fakultet strojarstva i brodogradnje, UNSPECIFIED. Mentor: Lulić, Zoran.

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Abstract (Croatian)

Razvojem industrije i pojavom globalnog tržišta javila se potreba za osiguranjem kvalitete proizvoda. Važan dio toga su ispitni laboratoriji koji profesionalnim pristupom omogućuju kvalitetno ispitivanje proizvoda i proizvodne opreme. Cilj ovog rada je definirati postupke kojima bi Laboratorij za motore i vozila postao akreditiran za ispitivanje motora s unutarnjim izgaranjem koji se koriste za pogon necestovnih pokretnih strojeva. U radu je napravljen kratak pregled pravilnika TPV 401 (izdanje 02) i direktive EZ/97/68. Dan je uvid u postupak akreditacije u Hrvatskoj i pregled Hrvatske akreditacijske agencije. Analiziran je utjecaj normi na svjetsko tržište i dan je pregled najznačajnijih svjetskih normnih kuća, kao i Hrvatskog zavoda za norme. Popisane su i analizirane norme od najvećeg značaja za postupak akreditacije Laboratorija za motore i vozila, te je opisan postupak implementacije normi u sustav rada laboratorija prema normi HRN EN ISO/IEC 17025. Nakon toga je dan detaljan uvid u mjeriteljstvo. Opisan je i pojašnjen utjecaj mjeriteljstva na industriju, definirani su osnovni pojmovi i najčešće metode određivanja mjerne nesigurnosti. Na kraju rada je prikazan postupak određivanja mjerne nesigurnosti uređaja za mjerenje momenta i brzine vrtnje na hidrauličkoj kočnici SCHENCK tip D 400 – 1e. Prikazani su rezultati i uspoređeni s traženim vrijednostima iz normi. U dodatku je napisan opći postupak umjeravanja uređaja za mjerenje momenta i brzine vrtnje na hidrauličkoj kočnici SCHENCK tip D 400 – 1e koji će biti implementiran u rad laboratorija.

Abstract

With the development of industry and the emergence of a global market there is a need to ensure the product quality. An important part of this are the laboratories whose professional approach provides quality testing of products and production equipment. The aim of this thesis is to define procedures by which the Laboratory for engines and vehicles would become accredited for testing internal combustion engines used to power the non-road machinery. The paper made a brief review of Regulation No. 401 (issue 02) and Directive 97/68/EC. An insight is given into the accreditation process in Croatia and an overview of the Croatian Accreditation Agency. The influence of standards on the world market is analyzed and is given an overview of the most important world of preferred houses, as well as the Croatian Standards Institute. The norms of the utmost importance for the process of accreditation of the Laboratory for engines and vehicles are listed and analyzed, and the process of implementation of standards in the system of the laboratory in accordance with ISO / IEC 17025 is described. Next a detailed insight into metrology is given. The impact of metrology on industry is described and explained; the basic concepts are described as well as the most common methods of determining measurement uncertainty. At the end of the article the procedure for determining the uncertainty of measurement devices for torque and speed on the hydraulic brake SCHENCK type D 400 - 1e is shown. The results and compared with the required values from the standards. In the annex is written the general procedure of calibration devices for measuring torque and speed to the hydraulic brake SCHENCK type D 400 - 1e which will be implemented in the work of the laboratory.

Item Type:	Thesis (Master's thesis (Bologna))
Uncontrolled Keywords:	akreditacija; laboratorij; mjeriteljstvo; umjeravanje
Keywords (Croatian):	accreditation; laboratory; metrology; calibration
Subjects:	TECHNICAL SCIENCE > Mechanical Engineering
Divisions:	400 Department of IC Engines and Mechanical Handling Equipment > 410 Chair of IC Engines and Motor Vehicles
Date Deposited:	12 May 2016 10:41
Last Modified:	12 May 2016 10:41
URI:	http://repozitorij.fsb.hr/id/eprint/5805

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