Course detail

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.

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

The subject knowledge on the secondary school level is required.

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.

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

Test

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.

The content and forms of instruction in the evaluated course are specified by a regulation issued by the lecturer responsible for the course and updated for every academic year.

Bednařík,J. a kol.:Technika spolehlivosti v elektronické praxi
Hauschild-Mosch:Statistik fur Elektrotechniker, Berlin
Polsterová, H.: Spolehlivost v elektrotechnice, elektronická skripta