Description This project will investigate giga-cycle fatigue analysis using the ultrasonic fatigue testing technology. The relevant literature will be reviewed on fatigue and the experimental techniques for giga-cycle testing. A sample geometry of the material will be first developed virtually using the finite element method, static, modal, harmonic and transient dynamic analysis. The sample and horn system resonance at 20kHz is required and the sensitivity to geometric and material variations will be investigated to optimise sample design. A material will be selected and a small number of samples will then be machined by the workshop. Depending on the availability of the Shimadzu USF-2000A ultrasonic fatigue machine the samples will be tested experimentally. Comparison with the literature and numerical FEA solutions will be made. A selected component, such as a pressure pump body, will then be modelled in FEA and a fatigue analysis will be performed. Key Objectives Review standards and literature related to fatigue analysis. Develop FEA simulations of fatigue samples. Perform experiments (in lab or virtually) estimating fatigue properties of a selected material. Perform fatigue FEA analysis of a component.