uncertainty analysis

100 %
0 %
Information about uncertainty analysis
Science-Technology
eng

Published on November 23, 2007

Author: DCA901

Source: authorstream.com

Uncertainty Analysis :  Uncertainty Analysis Presented by: Eng: Mohamed Mahmoud Ismail Presented to: Dr : Sadek Z Kassab Uncertainty Analysis:  Uncertainty Analysis Introduction : why we talk about uncertainty analysis ? What is the importance of uncertainty analysis ? Uncertainty Analysis:  Uncertainty Analysis What is Uncertainty Analysis? Uncertainty analysis is the procedure used to quantify data validity and accuracy Types of error: fixed error Random error Uncertainty Analysis:  Uncertainty Analysis The following assumptions are used in the above analysis: Equipment has been constructed correctly and calibrated properly to eliminate fixed errors. Instrumentation has adequate resolution and that fluctuations in readings are not excessive. Care is used in making and recording observations so that only random errors remain. Uncertainty Analysis:  Uncertainty Analysis Uncertainty Calculations Examples are given to illustrate how the High-Low method is used to estimate errors Uncertainty Analysis:  Uncertainty Analysis Uncertainty Analysis:  Uncertainty Analysis Uncertainty Analysis:  Uncertainty Analysis Uncertainty Analysis:  Uncertainty Analysis Uncertainty Analysis:  Uncertainty Analysis Error Calculations using Standard Deviation Uncertainty Analysis:  Uncertainty Analysis (σ) the standard deviation ( N ) the number of observations made ( t ) factor values obtained from statistical table depends on no of observations and level of confidence The normally accepted confidence level is 95% Uncertainty Analysis:  Uncertainty Analysis Analyzing the propagation of uncertainty in calculations Suppose that measurements of independent variables x1, x2, … , xn are made in the lab .The relative uncertainty of each independently estimated as ui R result for experiment mathematically as R= R(x1, x2 , ….., xn ) ∂Ri = ∂R/∂xi * δxi Divide R by the equation ∂Ri / R = 1/R * ∂R/∂xi * δxi = xi/R * ∂R/∂xi * δxi/xi ------- (1) substitute the uncertainty interval from xi URi = xi/R * ∂R/∂xi * UXi UR = ± [ (x1/R * ∂R/∂x1 * UX1)^2 + (x2/R * ∂R/∂x2 * UX2)^2 + - - - - - - - - - - +(xn/R * ∂R/∂xn * UXn)^2 ]^½

Add a comment

Related presentations

Related pages

Uncertainty analysis - Wikipedia

For a much more detailed treatment, see Experimental uncertainty analysis. Uncertainty analysis investigates the uncertainty of variables that are used in ...
Read more

2.5. Uncertainty analysis - NIST

2.5. Uncertainty analysis: Uncertainty measures 'goodness' of a test result: This section discusses the uncertainty of measurement results.
Read more

uncertainty analysis - Englisch ⇔ Deutsch Wörterbuch - leo.org

Das Sprachangebot für Englisch-Deutsch: Wörterbuch mit Übersetzungen, Flexionstabellen und Audio, interaktivem Forum und Trainer für flexibles Lernen.
Read more

Measurement Uncertainty Analysis Principles and Methods

NASA HANDBOOK Measurement Uncertainty Analysis Principles and Methods NASA Measurement Quality Assurance Handbook – ANNEX 3 Measurement System ...
Read more

Experimental uncertainty analysis - Wikipedia

Introduction. Rather than providing a dry collection of equations, this article will focus on the experimental uncertainty analysis of an undergraduate ...
Read more

Uncertainty Analysis: Understanding What You Don't Know

Uncertainty is part of every measurement, prediction, and experiment. The flip side is that achieving metric perfection is impossible. Engineers learn to ...
Read more

Chapter R.19: Uncertainty analysis - Homepage - ECHA

Chapter R19: Uncertainty analysis. Reference: ECHA-12-G-25-EN Publ.date: November 2012 Language: EN ... R.19.3.2 Level 1 - Qualitative uncertainty analysis ...
Read more

Introductory Guide to Uncertainty Analysis in ...

ES/ER/TM-35/R1 An Introductory Guide to Uncertainty Analysis in Environmental and Health Risk Assessment J. S. Hammonds F. O. Hoffman S. M. Bartell
Read more

Quantifying Uncertainty in Analytical Measurement

Quantifying Uncertainty in Analytical Measurement Third Edition QUAM:2012.P1. EURACHEM/CITAC Guide ... of the results of chemical analysis, ...
Read more

dict.cc Wörterbuch :: uncertainty :: Deutsch-Englisch ...

Englisch-Deutsch-Übersetzung für uncertainty im Online-Wörterbuch dict.cc (Deutschwörterbuch).
Read more