Maintenance strategy based on reliability analytical models for three parallel mechanical transformation machines

The purpose of this article is to formulate a maintenance strategy for three parallel machines in a mechanical manufacture. The research method was the quantitative modeling, based on analytical models. Time between failures (TBF) and time-to-repair (TTR) data since April 2014 to September 2015 were modelled for the three machines. Weibull distribution fitted all the TBF data. Lognormal distribution fitted TTR for machine 3. The availability Av(t) were calculated for each machine, remaining between 97% to 98%. Based on analytical models, it was defined that the best maintenance strategy for the system is the corrective maintenance.