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Researchers at Bradley University have been collaborating with engineers at Winzeler Gear to develop tools for the prediction of plastic gear tooth failure for any given set of operating conditions and to classify failure modes of these...

Mean Time Between Failures (MTBF) became a very frequently used value describing reliability of components, assemblies, and systems. MTBF was originallyintroduced and used mainlyin conjunction with electronic components, and systems. The definition and application ofthe MTBFformechanical components...

The paper presents a method for developing an accurate generic bevel gear model including both the face milling and face hobbing processes. Starting with gear blank geometry, gear and pinion basic generator machine settings are calculated. The...

Gear tooth wear is a very difficult phenomenon to predict analytically. The failure mode of wear is closely correlated to the lambda ratio. Wear can be the limiting design parameter for long--term durability. Also, the failure mode...

Carburizing is a commonly used method for increasing the strength and wear resistance of gearing. A significant benefit of the carburization process is that compressive residual stresses are developed near the surface due to phase transformations that...

The use of magnetic Barkhausen Noise Analysis (BNA) has been proven to be an effective tool for the non--destructive detection of microstructural anomalies in ferrous materials. Used as an in--process tool for the detection of surface temper...

Although elemental gear inspection is rarely specified for molded plastic gears, the measurementequipment and practices can be valuable in advancing the molding processes and improving the quality of the molded gears. After a brief description of plastic...

DSM Engineering Plastics is a producer ofnylon plastic materials used for gears. In the past two years, they have been running fatiguetests on actual molded gears in orderto provide design data. This experimentused spur gears that are...