INTEGRATED APPROACH TO ENGINEERING DESIGN AND ANALYSIS, VIBRATION FAILURE ANALYSIS, PREVENTION AND LIFE EXTENSION USING FEEDBACK CONTROL SYSTEM CONCEPT

摘要

The paper proposes an integrated approach to life cycle management of mechanical systems considering the four core processes of Design cycle analysis, Vibration signature analysis, Failure analysis and prevention, Residual life assessment and life extension. The application is suited for component level as well as large systems like thermal and nuclear power plants. In those cases life cycle management involves developing a strategy for economic and safety related operations for an extended period of life. The subjects of design cycle analysis, vibration and signature analysis, failure analysis and failure prevention and life management have hitherto been dealt with in isolation and decisions were taken pertaining to that restricted field. It is the author's considered opinion that a better and more comprehensive decision can emerge if the results of isolated analyses are considered in an integrated manner at once using the interdependence of parameters considered in each study. A model is evolved linking the above mentioned analyses using a feedback control system model where the output of each study and its influence on the input of the other study is rationally considered. The decisions arrived at from such an integrated control system model would be more holistic than those arrived at from results arising out of separate studies.