1. A method for characterizing performance loss of an object undergoing at least one arbitrary aging condition, the method comprising: collecting baseline aging data from an object having an aging profile for at least one known baseline aging condition over time; determining baseline multiple sigmoid model parameters from the baseline data; and determining performance loss data of the object over time through multiple sigmoid model parameters associated with the object undergoing at least one arbitrary aging condition having an unknown consequence over time using a differential deviation-from-baseline approach from the baseline multiple sigmoid model parameters.