Abstract: A differential form for damage accumulation is proposed wherein the rate of damage accumulation is equal to a product of two functions. The first depends only on the present damage and the ...

Abstract: The evolution of creep failure criteria is discussed from the early considerations of strain limits to avoid excessive deformation to the current concepts where rupture is used as the basic ...

Abstract: Improved electrical power generation and actuation systems offer new design approaches for performing the engine control and accessory functions in helicopter propulsion systems. Present helicopter ...