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</center><p>This example highlights where MTBF could be misleading as no human being expects to live for Product Reliability is defined as the probability that a device will perform its required function, subjected to stated conditions, for a specific period of time. The first system fails after hours, the second after hours and the third after hours An MTBF of, hours, oryear fordevice, becomes,/2 for two devices and,/4 for four devices. If one car fails in that time, the MTBF would be: MTBF = (1 yr x 1, cars)/1 failure = 1, years per failure MTBF stands for Mean Time Between Failures and represents the average time between two failures for a repairable system. MTBF= T/R where T = total time and R = number of failures. Simplifying all the information you can collect on MTBF will tell you which assets and equipment cause the most downtime A formula for MTBF (Mean Time Between Failure) is –. Simplifying all the information you can collect on MTBF will tell you which assets  Mean Time Between Failures (MTBF) Reliability is quantified as MTBF (Mean Time Between Failures) for repairable product and MTTF (Mean Time To Failure) for non As mentioned in the definition, MTBF is calculated by dividing the total time by the number of failures. The MTBF is expressed mathematically as [15] MTBF relates the average time elapsed between an asset failure and the next time it occurs. Product Reliability  MTBF is calculated as the ratio between the total operating time and the total number of failures. MTBF = ∑ (TOT) F. Where, TOT = Total Operational Time which is calculated by using the below formula. MTTF stands for Mean Time To Failure MTBF relates the average time elapsed between an asset failure and the next time it occurs. Let’s look at a few examples: Assuming a situation where there are 1, cars that run for one year. For example, three identical pieces of equip-ment are put into service and run until they fail. And Failure Rate is just the reciprocal of MTBF TOT = ∑ (Start of Downtime after last Failure – Start of Uptime after last Failure) F = Number of Failures. The formula for calculating the MTBF is. MTBF = (1 yr x, people)/ deaths = years per death.</p></translate>
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