\ifthenelse {\boolean{paper}} { \abstract{ This paper describes how the FMMD methodology can be applied throughout the lifecycle of a product, with minimal impact to the cost of re-analysis. } } { This chapter describes how the FMMD methodology can be applied throughout the lifecycle of a product, with minimal impact to the cost of re-analysis. } \section{Introduction} \ifthenelse {\boolean{paper}} { paper } { chapter } \section{discovering a `new' failure mode in a component} Give general idea of how a new failure mode can be integrated into the model. How it may cause a new symptom but may not. How it will generally be limited to small sections of th FMMD tree. Give specific example, pretend a new failure mode is discovered in a SCHOTTKY diode. Often an electronic component will have a new failure mode `discovered' I am using as an example a diode which has an exponential relationship with temperature and reverse leakage current. This is a failure mode that would not be initially considered in a design. But when combined with high value resistors could give incorrect voltage readings in some circuits. I how the FMMD model can have this new failure mode added and what impact it has on the FMMD data model. \section{Discovering New Failure Mode behaviour ina {\dc}} \section{New or additional evironmental Conditions}