Reliability analysis of fuel pump component for a gas turbine based on a double Weibull hybrid distribution
The fuel pump component is mechatronics.The fault data obtained in the use of the products contains differ-ent failure mechanisms,so a single distribution cannot describe the product failure mechanism accurately,while the hybrid distribution can couple multiple failure distributions,thus can fully describe the product failure mechanism.For the first time,the double-three-parameter Weibull hybrid distribution model is applied to the fault analysis of ship engine accessories.Based on the fault data of a fuel pump component of one certain type of gas turbine,the fault model and model initialization parameters are determined by data analysis histogram.The linear curve fitting method is used to estimate the parameters of the double-three-parameter Weibull hybrid distribution.The research methods and results can provide a feasible method for the reliability analysis and optimization of fuel pump components.