Dr.-Ing. Maria Hergesell
Maria Hergesell studied mechanical engineering at Technical University of Dresden, receiving in 2004 her Diplom-Ingenieur. From 2004-2011 she worked as a research associate at the Gear Research Centre (FZG), Technical University of Munich. She received her PhD in 2013 for her work, "Formation of Micropitting and Pitting on Case-Carburized Gears of Medium and Small size." For one year (2011-2012) she worked for Siemens AG and was responsible for the optimization of business processes. Hergesell in 2012 was named head of technology management for Wittenstein GmbH. (Bio last updated 2016-09-01 Contact Randy Stott, Managing Editor, with changes.)
Articles by Maria Hergesell
- Increased Tooth Bending Strength and Pitting Load Capacity of Fine-Module Gears (September/October 2016)
The common calculation methods according to DIN 3990 and ISO 6336 are based on a comparison of occurring stress and allowable stress. The influence of gear size on the load-carrying capacity is considered with the size factors YX (tooth root bending) and ZX (pitting), but there are further influences, which should be considered. In the following, major influences of gear size on the load factors as well as on the permissible tooth root bending and contact stress will be discussed.