“…Those studies consider different kinds of components such as ballbearings [4,12], gear trains [10,13], braking systems [14], batteries [7,8,15], gas turbines [16], etc., but also structural parts to predict crack growth [17,18]. Some studies aim at more generic approaches However, the distributions of RULs or of the degradations after given periods of use are not always identified but works dealing with prognostics of components often provide identifications of intervals for the assessed RULs or degradations [4,14,32]. These intervals introduce uncertainty between two possibilities: the degradation is under the failure threshold, the degradation is over the failure threshold.…”