Residual Stress Dynamics: Bridging the Gap Between Manufacturing Heterogeneity and Shakedown Relaxation

This research project investigates how residual stress heterogeneity generated during manufacturing affects the performance and durability of gears, which are critical components in power transmission systems. When properly controlled, residual stresses can improve fatigue resistance and extend the service life of mechanical parts. However, their behavior of relaxation during the early stages of operation is still poorly understood.
The project focuses on understanding how manufacturing-induced residual stress heterogeneity influences stress redistribution during gear operation, a process known as shakedown. By combining experimental techniques such as X-ray diffraction, topography evaluation, mechanical properties, and mechanical testing, the project aims to generate new insights that can improve the design and production of more reliable components.
The research supports advancements in strategic sectors like electric mobility and wind energy, where gears face increasing mechanical demands. Conducted in partnership between the Instituto Tecnológico de Aeronáutica (ITA, Brazil) and ÉTS Montréal (Canada), the project promotes international collaboration and contributes to the global effort to develop sustainable and efficient mechanical systems.

Faculty Supervisor:

Philippe Bocher

Student:

Partner:

Instituto Tecnológico de Aeronáutica

Discipline:

Engineering

Sector:

Automotive; Advanced Manufacturing; Aerospace

University:

École de technologie supérieure

Program: