Course detail

Reliability in Electrical Engineering

FEKT-BSPEAcad. year: 2011/2012

Reliability of elements and systems.Classification of failures.Utilization of statistics in reliability.Reliability of expendable products.Probability of trouble-free operation,failures.Relations between characteristics of reliability.Creating reserves.Introducing ISO 9000 system of quality.Kinetics of processes of ageing and depreciation of materials.Interaction between the conditions of exploitation and electrotechnical equipment.Diagnostics of materials,elements and systems.

Language of instruction

Czech

Number of ECTS credits

5

Mode of study

Not applicable.

Guarantor

Ing. Helena Polsterová, CSc.

Department

Department of Electrical and Electronic Technology (UETE)

Learning outcomes of the course unit

The students gain review about the bases of reliability of electrotechnical products.They become familiar with the problems of ageing of electrotechnical equipment.

Prerequisites

The subject knowledge on the secondary school level is required.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Teaching methods depend on the type of course unit as specified in the article 7 of BUT Rules for Studies and Examinations.

Assesment methods and criteria linked to learning outcomes

Test.

Course curriculum

Introdiction to the problems.Basics concepts.
Reliability of elements and systems.Classification of systems.Classification of failures according to their reasons of origin, time course and stage of the failure.
Bases of statistics.Distribution of random variable and their use in reliability.
Reliability of expendable.Probability of trouble-free operation.Probability of failures.Density of failures, intensity of failures.Mean time of trouble-free operation.Relations between characteristics of reliability.
Reliability of systems.Creating reserves.Active and passive creating reserves.
Standardization.Statistics at checking of quality of production processes.International standardization.
Introduction of ISO 9000 quality system.
Defects in initial materials and their influence on final properties of elements.Defects iniciated by production technology.
Mechanisms and kinetics of processes of ageing and depreciation.Interaction between the conditions of exploitation and electrotechnical equipment. Complex,partial and model stresses and their relation to depreciation.
Temperature ageing. Effect of humidity.Ageing by electric field.Mechanical depreciation.Effect of chemically agresive environment.
Corrosive depreciation.Kinetics of degradation processes at affecting degradation factors.
Diagnostics of materials,elements and systems.Destructive,potentially destructive and non-destructive methods.
Structural methods.Electrical methods.Other physical methods.

Work placements

Not applicable.

Aims

The aim of the subject is to make students familiar with the problems of reliability of electrotechnical products and with the bases of creating reserves.

Specification of controlled education, way of implementation and compensation for absences

Presence 70%.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Polsterová, H. Spolehlivost v elektrotechnice. Elektronická skripta. (CS)

Recommended reading

Not applicable.

Classification of course in study plans

  • Programme EECC Bc. Bachelor's

    branch B-MET , 2 year of study, summer semester, elective specialised

  • Programme EEKR-CZV lifelong learning

    branch EE-FLE , 1 year of study, summer semester, elective specialised

Type of course unit

 

Lecture

26 hod., optionally

Teacher / Lecturer

Ing. Helena Polsterová, CSc.

Syllabus

Introdiction to the problems.Basics concepts.
Reliability of elements and systems.Classification of systems.Classification of failures according to their reasons of origin, time course and stage of the failure.
Bases of statistics.Distribution of random variable and their use in reliability.
Reliability of expendable.Probability of trouble-free operation.Probability of failures.Density of failures, intensity of failures.Mean time of trouble-free operation.Relations between characteristics of reliability.
Reliability of systems.Creating reserves.Active and passive creating reserves.
Standardization.Statistics at checking of quality of production processes.International standardization.
Introduction of ISO 9000 quality system.
Defects in initial materials and their influence on final properties of elements.Defects iniciated by production technology.
Mechanisms and kinetics of processes of ageing and depreciation.Interaction between the conditions of exploitation and electrotechnical equipment. Complex,partial and model stresses and their relation to depreciation.
Temperature ageing. Effect of humidity.Ageing by electric field.Mechanical depreciation.Effect of chemically agresive environment.
Corrosive depreciation.Kinetics of degradation processes at affecting degradation factors.
Diagnostics of materials,elements and systems.Destructive,potentially destructive and non-destructive methods.
Structural methods.Electrical methods.Other physical methods.

Exercise in computer lab

18 hod., compulsory

Teacher / Lecturer

Ing. Helena Polsterová, CSc.

Syllabus

Introduction.Organization of practise.
Mathematical statistics.Distribution of random variable.Normal distribution.
Exponential distribution.Weibull's distribution.
Reliability characteristics.
Calculations and courses of reliability characteristics.
Reliability models.General calculations.
Calculations of serial reliability models.
Calculations of parallel reliability models.
Estimate of lifetime at heat-ageing of insulations

Laboratory exercise

4 hod., compulsory

Teacher / Lecturer

Ing. Helena Polsterová, CSc.

Syllabus

Diagnostic measurement of insulating materials.
Measurement and comparison of properties of non-aged and aged objects.