2:50 PM - 3:10 PM
[16C-T11-03] Stressability of PM-Gears under Consideration of Local Porosity
Keywords:PM-Gears, Stressability, Local Porosity
An efficient gear design requires minimal safety margins in order to realise a full material utilization in terms of load capacity. This leads to a necessity of increasingly accurate calculation methods for the load capacity of gears. In this paper, a method for the calculation of the stressability of surface densified powder metal gears considering local material properties is presented.
The approach to consider local porosity characteristics for the calculation of the gear load capacity, is implemented by an image-processing tool that analyses metallographic microsections. The stressability is calculated based on the local porosity characteristics, regarding porosity distribution and local pore morphology. Finally, the local load capacity can be calculated based on the comparison between the local stress profile resulting from the tooth mesh and the local stressability profile.
The approach to consider local porosity characteristics for the calculation of the gear load capacity, is implemented by an image-processing tool that analyses metallographic microsections. The stressability is calculated based on the local porosity characteristics, regarding porosity distribution and local pore morphology. Finally, the local load capacity can be calculated based on the comparison between the local stress profile resulting from the tooth mesh and the local stressability profile.