RELIABILITY ANALYSIS OF VEHICLES IN A FLEET IN BOSNIA AND HERZEGOVINA
Keywords:
reliability, reliability analysis, maintenance, efficiency, availability, vehicle, truck fleetAbstract
Reliability can be observed as an item with a probability to perform at an unchanged rate maintaining its function without failure under declared conditions for specified time. Predicting events that can cause vehicle failure in the vehicle fleet is an everyday activity and the process is seriously monitored and its causes and consequences are considered. The fleet maintenance process directly improves and enables its application for the intended tasks.
The paper presents a reliability analysis for 10 vehicles for transport in a heterogeneous fleet for the period from 2016 to 2020 of the company Suša commerce Ltd. from Visoko (Bosnia and Herzegovina).
Through the calculation and analysis of failure density function f(t), reliability function R(t), unreliability function F(t) failure rate function l(t) for 10 vehicles for transport in a heterogeneous fleet for the period from 2016 to 2020 of the company Suša commerce Ltd. its efficiency and evaluation of the maintenance system as the most important lever for ensuring quality transport as well as the efficiency of transport from point A to point B in a given time frame are presented.
For the mentioned research, the arithmetic mean is: =MTBF=1050 [h] and standard deviation is: s=SD=522.4. Most of the failures, for 10 vehicles for transport in the heterogeneous fleet for the period from 2016 to 2020 of the company Suša commerce Ltd., occurred in the second and third intervals, which means that the largest maintenance intervention must be realized during the third interval (t=800-1200 [h]). Reliability R(t)=0.5 or 50% and unreliability F(t)=0.5 or 50% in the experimental model is for time t=750 [h].
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