Pertemuan Ke-2. Reliability Function Reliabilty Function.

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Presentation transcript:

Pertemuan Ke-2

Reliability Function

Reliabilty Function

t 1 Reliability Function t 1 Cumulative Distribution Function F(t)

Mean Time to Failure (MTTF)

t f(t) t mode t median MTTF

Mean Time to Failure (MTTF)

Hazard Rate Function

Bathtub Curve

Characterized byCaused byReduced by Burn inDFRManufacturing defect : welding flaws, cracks, defective parts, poor quality control, contamination, poor workmanship Burn in testing Screening Quality Control Acceptance Testing Useful LifeCFREnvironment random loads Humanr Error “ Acts of God” chance event Redundancy Excess Strength Wear outIFRFatigue Corrosion Aging,Faction Cyclical Loading Derating Preventive Maintenance Parte Replacement, Technology

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