A time-discrete extended gamma process for time-dependent degradation phenomena (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• A time-discrete extended gamma process for time-dependent degradation phenomena (Articolo in rivista) (literal)

Anno

• 2012-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1016/j.ress.2011.12.016 (literal)

Alternative label

• Guida M. 1,2; Postiglione F. 1; Pulcini G. 2 (2012)
  A time-discrete extended gamma process for time-dependent degradation phenomena
  in Reliability engineering & systems safety
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Guida M. 1,2; Postiglione F. 1; Pulcini G. 2 (literal)

Pagina inizio

• 73 (literal)

Pagina fine

• 79 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://www.sciencedirect.com/science/article/pii/S0951832011002791# (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 105 (literal)

Rivista

• Reliability engineering & systems safety (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 7 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 9 (literal)

Note

• Google Scholar (literal)
• Scopu (literal)
• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• 1) Department of Electronic and Computer Engineering, University of Salerno, Fisciano, SA, Italy; 2) Istituto Motori, National Research Council-CNR, Naples, Italy. (literal)

Titolo

• A time-discrete extended gamma process for time-dependent degradation phenomena (literal)

Abstract

• The non-stationary Gamma process is a widely used mathematical model to describe degradation phenomena whose growth rate at time t depends only on the current age of the item and not on the accumulated damage up to t. Nevertheless, the Gamma process is not a proper choice when there is empirical evidence that the variance-to-mean ratio of the process varies with time, because the Gamma process implies a constant variance-to-mean ratio. This paper proposes a generalization of the nonstationary Gamma process, which can be viewed as a time discretization of the extended Gamma process and allows one to describe time-dependent degradation phenomena whose variance varies with time t, not necessarily in proportion to the mean. A way to approximate the exact distribution of the degradation growth over a given time interval is given and a test for assessing whether the assumption of the Gamma process can be rejected or not is discussed. Finally, the proposed model is applied to a real dataset consisting of the sliding wear data of four metal alloy specimens. (literal)

Prodotto di

• Affidabilità, qualità e manutenibilità nei trasporti (ET.P02.019.001) (Modulo)
• Istituto motori (IM) (Istituto)

Autore CNR

• GIANPAOLO PULCINI (Persona)
• MAURIZIO GUIDA (Persona)

Incoming links:

Prodotto

• Istituto motori (IM) (Istituto)
• Affidabilità, qualità e manutenibilità nei trasporti (ET.P02.019.001) (Modulo)

Autore CNR di

• GIANPAOLO PULCINI (Persona)
• MAURIZIO GUIDA (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Reliability engineering & systems safety (Rivista)