Degradation modelling of voltage comparator using modified physics of failure approach

• There are several electronic systems running continuously to control and monitor the various activities in the nuclear industry and reliability and safety of these systems is taken care of utmost importance. The Neutron Flux Monitoring System has individual electronic components is one of the modules present in the signal processing unit. This unit consists of numerous components such as Optocoupler, Constant fraction discriminator, Voltage Comparator, Instrumentation Amplifier etc., and this paper studies the degradation aspects of the Voltage comparator. The prediction of reliability was conducted at earlier phases of electronics but in the present advances in the technology that methods were no longer obsolete. Hence, the other alternative, physics of failure approach laid emphasis on the root cause analysis and degradation of the performance parameters. Apart from that, we combined physics of failure approach with the statistical methods such as Design of Experiments, Accelerated testing and failure distribution models to quantify time to failure of this electronic component by radiation and temperature as stress parameters. The degradation of the performance parameter is modelled and compared using regression analysis, parametric analysis, several response plots and response surface method.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Samhällsbyggnadsteknik -- Annan samhällsbyggnadsteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Civil Engineering -- Other Civil Engineering (hsv//eng)

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Drift och underhållsteknik

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