In the paper a wavelet-based signals processing technique for the experimental detection of the gear rattle produced by the teeth impacts in lightly loaded gears is proposed. The Discrete Wavelet Transform is used to decompose the signal of the angular relative motion of an helical gear pair, and the wavelet decomposition details are adopted to analyze the dynamic behavior under rattle conditio...

Learning to calculate spur or helical gears is a difficult task. Despite the vast amount of available literature, the non-graduate students make all kinds of mistakes when they start to study the matter. The group that presents this paper realized that the reasons for these errors is a misunderstanding of factors and the time spent on calculus to obtain the modified coefficients of allowable st...

Reverse engineering plays an important role in the manufacturing and automobile industries designing complicated spare parts, reducing actual production time, allowing for multiple redesign possibilities, including shape alterations, different materials, changes to other significant parameters of component. Using reverse methodology, damaged gears can be identified modeled meticulously. Influen...

To monitor the gradual wear process of gears, behavior at different lifetime phases has to be fully understood in theory. The traditional Archard’s model was mainly developed for dry contact. However, most gear transmission systems, gears normally work under mixed EHL regime, and two contact surfaces are separated by a thin film avoid asperity Therefore, is inappropriate estimate depth lubricat...

This study combines the use of a Tooth Contact Analysis (TCA) model for helical gear pair conjunctions with multifaceted tribological model, implicitly coupled multi-body dynamic system. A reduced order 2-D Elastohydrodynamic Lubricant (EHL) film thickness prediction facilitates estimation viscous and boundary friction Greenwood-Tripp asperity as well lubricated wear methodology. An implicit ap...