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Home » Influence of the Defect Size on the Tooth Root Load Carrying Capacity

Influence of the Defect Size on the Tooth Root Load Carrying Capacity

November 1, 2017
The objective of this work is to introduce a method for the calculation of the tooth root load carrying capacity for gears, under consideration of the influence of the defect size on the endurance fatigue strength of the tooth root. The theoretical basis of this method is presented in this paper as well as the validation in running tests of helical and beveloid gears with different material batches, regarding the size distribution of inclusions. The torque level for a 50 percent failure probability of the gears is evaluated on the test rig and then compared to the results of the simulation. The simulative method allows for a performance of the staircase method that is usually performed physically in the back-to-back tests for endurance strength, as the statistical influence of the material properties is considered in the calculation model. The comparison between simulation and tests shows a high level of accordance.
Design Materials Load Load Carrying Capacity Rating Defects Inclusions Technical
KEYWORDS defects inclusions load carrying capacity materials rating
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