The Reliability Assessment of Crucial Components in Hydraulic Axial Pump by Two-Parameters Weibull

Abstract

The proper maintenance of the hydraulic axial pump was discussed to maximize its performance and minimize downtime. In this study, reliability assessment by a two-parameter Weibull was applied as a reference for the periodic maintenance of the components in the hydraulic axial pump with a capacity of 2000 litres per second. The two-parameter Weibull consisted of shape parameter β and scale parameter θ. An assessment was conducted to determine the critical parts and determine the failure rate of the formed data patterns. The three critical components of mechanical seal, bearing, shaft were investigated from each of six hydraulic axial pumps. By applying the two-parameter Weibull, the mean time to failure value of mechanical seal, bearing, and the shaft is obtained as 182.91 hours, 381.08 hours, 755.67 hours, respectively. Furthermore, the reliability values of those components were 52%, 52%, and 53%, respectively. By following these results, periodic maintenance could be then conducted regularly.

Keywords

• hydraulic axial pump
• mean time to failure
• reliability assessment
• two-parameter weibull