期刊名称：Journal of Engineering Management and Competitiveness
印刷版ISSN：2334-9638
电子版ISSN：2217-8147
出版年度：2018
卷号：8
期号：1
页码：47-53
DOI：10.5937/jemc1801047T
语种：English
出版社：University of Novi Sad, Technical faculty Mihajlo Pupin, Zrenjanin
摘要：In engineering and fundamental sciences,many important decisions are based on the results of quantitative measurements.When an observation result is stated,it is also required to determine the uncertainty associated with the observation.A measurement uncertainty analysis comprises of random and systematic components.Different from the random fluctuations,systematic uncertainties are resourced from the specifications,environmental conditions,calibration and other heuristic critical factors.This study assesses the systematic and random effects which create some uncertainty on a Schmidt Hammer (SH) rebound hardness test.In particular,as the certain probability terms,the systematic uncertainty component is focused and its volume has been appraised from a control framework.The importance of elemental uncertainty and coverage term are discussed from a statistical control perspective.In the same ground,the effective number of degrees of freedom is also evaluated.In this way,the importance of the fixed error sources has been appraised based on statistical control perspective.The use of an uncertainty term as a measurement parameter in testing-based decision making can provide some reliable and realistic information for engineering risk management and quality control.
其他摘要：U inženjerstvu i osnovnim naukama mnoge važne odluke zasnivaju se na rezultatima kvantitativnih merenja.Kada se,meutim,daje rezultat posmatranja,neophodno je naznaiti i nesigurnost povezanu sa ovim posmatranjem.Analize merne nesigurnosti ukljuuju nasumine (sluajne) i sistemske komponente.Za razliku od sluajnih odstupanja,sistemske nesigurnosti potpiu od specifikacija,uslova okoline,kalibracije i drugih heuristikih kritinih faktora.Ova studija ocenjuje sistemske i sluajne efekte koji stvaraju nesigurnost u testiranju tvrdo_e kamena pomo_u Schmidt Hammer (SH) testa.Konkretno,kao odreeni pojmovi verovatno?e,sistemska komponenta nesigurnosti je fokusirana i njen znaaj se procenjuje iz ugla kontrole.Znaaj elementarne nesigurnosti i koncepta pokrivenosti razmatra se iz perspektive statistike kontrole.U istom se procenjuje i efikasan broj stepeni slobode.U ovom smislu,znaaj sistemskih izvora grešaka ocenjen je sa stanovišta perspektive statistike kontrole.Koriš_enje nesigurnosti kao referentnog mernog parametra za donošenje odluka na osnovu testiranja,može pružiti neke pouzdane i realne informacije za upravljanje tehnikim rizikom i kontrolu kvaliteta.
