Detection of equipment aging and determination of the efficiency of a corrective measure

The determination procedure of the onset of the object wear-out period based on monitoring of the empirical failure intensity function

“…fuzzy implications R k (k = 1,2,…,l) [8,14,15]. These are the if-then type of rules that in a general form can be written as follows: (1) x is 1 j A and (2) x is 2 j A and … and ( )…”

“…Relevant literature presents mathematical models that assist the process of reaction to object failure e.g. [2,3,10,12], procedures that describe and compare classes of forecast models (e.g. [4,17]) or assist in the forecasting of failures of nonrenewable technical objects in the wear-out period (e.g.…”

“…[10,12]). In [2] a method is proposed of detecting the onset of the object wear-out period and determining the maintenance efficiency based on, as the authors of [2] would call it, a step model of aging and the Bayes techniques. In [3] a new reliability model is presented of complex repaired technical objects/systems based on the bathtub curve.…”

“…Few publications in this matter pertain mainly to the attempts to find new forms of functions describing the processes of object operation [6,9] or focus on modeling of the entire course of the function of failure intensity ( [19]). A reliable solution is proposed by the authors of [2], but only for known continuous distributions. What is missing is the solution to the problem if the failure intensity function is a non-continuous characteristics and its form as a function is unknown.…”

Estudo de confiabilidade de compressores alternativos semi-herméticos de sistemas de refrigeração.

“…Já os trabalhos de Yan-Qiao et al (1996) e Nutter et al (2002) apresentam um detalhamento maior no que diz respeito à metodologia de confiabilidade e resultados. (Nelson et al, 1988) (Nelson et al, 1989) (Nutter et al, 2002) (Clarotti et al 2004) (Garcia et al, 2005).…”