Fig 1.
Data processing diagram in the reliability analysis; reprinted from Diallo et al. [14].
Fig 2.
The relationship between classical statistical methods; reprinted from Pijnenburg [19].
Fig 3.
A conceptual framework of the RUL based on the reliability analysis in the frailty model.
Table 1.
The GOF values of classical and frailty models for the excavator failure data.
Table 2.
The exponential function in the classical model for the excavator’s failure data.
Table 3.
The parameter of λ in the classical-exponential model for the excavator’s failure data.
Table 4.
The parameters of the classical Weibull-frailty function for the excavator failure data.
Table 5.
The parameters of the Weibull-frailty function for the excavator’s failure data.
Fig 4.
The reliability analysis in the classic-exponential model compared to the Weibull-frailty-model.
Fig 5.
The plot of RUL values during 80 operational hours of the excavator in the classical-exponential model.
Table 6.
RUL values during 80 operational hours of the excavator in the classical-exponential model.
Fig 6.
The plot of RUL values during 80 operational hours of the excavator in the Weibull-frailty model.
Table 7.
RUL values during 80 operational hours of the excavator in the Weibull-frailty model.