Mechanical Behaviour of Materials

Materials and Structural Integrity

Research overview

Applied research into fatigue and fracture of aero-engine materials and components has been carried out at Portsmouth for over 30 years in collaboration with the aerospace industry.

The materials studied include nickel, titanium and aluminium alloys for aeroengines and aeroframes, and composites for satellites and wind turbines. Detailed constitutive models have been implemented in finite element models and numerical studies have been carried out to model crack growth at elevated temperature when creep, fatigue and oxidation may occur concurrently.

A significant knowledge base has been developed on nickel-based superalloys, both in specialist mechanical testing and in modelling using advanced tools including crystal plasticity and discrete dislocation dynamics.

Recent developments include the use of digital image correlation in mapping strain fields of a crack tip and modelling of internal oxidation for life assessment, and monitoring of high temperature steam tubing in power plants.

Our four-station hip simulator with a specimen loaded into one of the test cells

Examples of our research PDF 888KB

Examples of our research, including Finite Element Simulation of Fatigue Crack Growth, Combined Low cycle (LCF) and High Cycle (HCF) Fatigue, The Effect of Foreign Object Damage (FOD) on Crack Growth of Aerofoil