Tutorial 1

3:00 to 4:30 p.m. Wednesday, October 20, 2010

Structural Reliability for Mechanical Components Under Road and Self Induced Vibration Loading

Fatigue is a complex phenomenon that is affected by a number of factors, such as the surface finish of the component, environmental effects, heat treatments, presence of stress concentration factors, etc. It is therefore important to carefully analyze components subjected to fluctuating loads so that the desired reliability can be built into these components and over-designed or under-designed components can be avoided.

This presentation will cover examples of mechanical structures under load and self induced vibration inputs and correlate them to actual vibration testing using finite element techniques associated with several live fatigue models. The presentation will also cover practical testing considerations from the selection of fatigue testing equipment and fatigue cycle counting methods to actual testing.

Key Words: Accelerated Reliability Testing, Fatigue Testing, Vibration Testing, Structural Reliability

Julio Pulido

Ingersoll Rand