717-9010/01 – Evaluation Methods of Measurement of Physical Quantities (MVMFV)
| Gurantor department | Department of Physics | Credits | 10 |
| Subject guarantor | prof. Ing. Libor Hlaváč, Ph.D. | Subject version guarantor | prof. Ing. Libor Hlaváč, Ph.D. |
| Study level | postgraduate | Requirement | Choice-compulsory |
| Year | | Semester | winter + summer |
| | Study language | Czech |
| Year of introduction | 2016/2017 | Year of cancellation | 2018/2019 |
| Intended for the faculties | HGF, FBI, FS, USP, FAST | Intended for study types | Doctoral |
Subject aims expressed by acquired skills and competences
The subject includes these themes discussed in a context of the problems of the assigned doctoral work: the philosophy of measurement of uncertainties, standard uncertainty of the A type, standard uncertainty of the B type, combined standard uncertainty, extended standard uncertainty, determination of standard uncertainties, significance of determination of uncertainties in certified calibrating and testing laboratories, the reasons for introduction of certificates approving qualification for metrology and testing activities.
Teaching methods
Lectures
Individual consultations
Summary
The topics of the subject are as follows: philosophy of the errors in
measurement and uncertainties, standard uncertainty of the type A, standard
uncertainty of the type B, combined standard uncertainty, widened standard
uncertainty, determination of the standard uncertainties, significance of
determination of uncertainties in accredited calibrating and testing
laboratories, certificate of qualification for gauging, measurement and
testing activities. As a part of the subject exam the doctoral student has to
prepare in written form either evaluation of measurements or critique of norms
and/or technical instructions from the branch of dissertation according to
adviser recommendation.
Compulsory literature:
Barbato, G.; Germak, A. Uncertainty in Hardness Measurement. Discussion to measurement of uncertainties for measuring of hardnees on hardness measurement devices Rockwell – scale C. Berlín: Workshop EAL, 1995.
Kaarls, R., Kessel, W. Rewiew of the Use of Measurement Uncertainty in Calibration, Measurement and Testing Procedures. Eurolab Workshop and Seminar on Measurement Uncertainty in Testing. Barcelona: December 1992.
Recommended literature:
ASME Code, Sect. II, Part A – Ferrous Material specifications, SA 370, Ed. 1995. BIPM/IEC/IFCC/ISO/IUPAC/OIML: Guide to the Expression of Uncertainty in Measurement, ISO, I. edition, 1993.
EQS – European Committee for Quality System Assessment and Certification, First Edition, Juni 1992.
Way of continuous check of knowledge in the course of semester
Preparation of the summary with an extent from 20 to 30 pages from selected chapter or chapters. This work is an entrance condition for passing of the exam.
E-learning
Other requirements
Preparation of written material summarizing application of key themes of the subject in solution of the own doctor theses.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. NUMERICAL CHARACTERISTICS OF RANDOM VARIABLES
Distribution function, probability density functions and probability.
Mean. Moments. Characteristic functions of random variables.
Quantiles. Characteristics of the location and variability. Characteristics of the obliquity and kurtosis. Symmetrical distribution.
2. STUDENT DISTRIBUTION
The sample average. Unbiased estimate. Sample variance. Selection standard
deviation. Confidence interval. Risk. Student's coefficient. Extreme
error.
3. ELIMINATING OF RANDOM AND SYSTEMATIC ERRORS
Substitution method. Method bias changes sign. Method changes
sign of the measured quantity. Symmetrical method of measurement. The method of periodic measurements.
4. BASIC CONCEPTS AND DEFINITIONS FROM THE MEASUREMENT UNCERTAINTY
Random variable. Uncertainty. Initial estimate of the input variables.
Output estimate the output value.
5. MEASUREMENT UNCERTAINTY
Standard uncertainty of type A, type B, method of estimating the standard uncertainty of type B, conversion uncertainties correlation between sources of uncertainty, combined standard C uncertainty, expanded uncertainty, determination coefficient of expansion.
6. METHODOLOGICAL PROCEDURE FOR DETERMINING THE UNCERTAINTY
Analysis of input conditions. The mathematical model selected methodology.
Identification and implementation of all major correction. Sources of uncertainties.
Determination of the input standard uncertainties. Determination of the combined standard uncertainty. Analysis of the contributions of individual uncertainties. Setting expansion uncertainty.
7. MEASURING INSTRUMENT UNCERTAINTY OF ELECTRICAL VARIABLES
8. UNCERTAINTY OF TESTING AND EVALUATION
Determination of uncertainties in tensile tests, tests, impact test. Rating
uncertainties in hardness testing.
9. CERTIFICATION AND ACCREDITATION
Definitions. Certification of quality assurance, personnel, products
and in testing laboratories. Certification in the country.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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