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ADVANCED ENGINEERING DESIGN - …
ADVANCED ENGINEERING DESIGND esign for ReliabilityBook: ADVANCED ENGINEERING DESIGN , edition 2015 Website: Manual: Last update Sept 5, Anton van BeekDelft University of TechnologyMechanical Engineering2 DESIGN for lifetime performance and reliabilityRecent updates from Sept 5, updated DESIGN for lifetime performance and reliability3 Problems Chapter 1 Problem : L10 service life Consider a quantity of 10 components that all fail within a year of service. Calculate the L10 service lifewith 90% reliability and 10% failure probability assuming a normal failure Problem : Tolerance field The diameter of a batch of shafts is normally distributedwith of the shafts within the tolerance field 20h9, itis between 20mm +0 / 52 m. Calculate the size of the tolerance field with 95%probability. Problem : Driving torque interference fit An interference fit is realized with 20 H7/r6 hole/ shaft tolerances.
4 Design for lifetime performance and reliability Problem 1.5: Interference fit with hollow shaft A gear is to be press fitted over a hollow shaft of 20 mm diameter.
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