Microstructure and Residual Stresses
We investigate the effect of manufacturing processes and operational loads on the microstructure and the internal stress in materials and components. A particular focus lies on the identification of the ...
We assess the influence of microstructures, internal stresses and damage on component functionality and life expectancy. We are particularly interested in linking specific analyses and experiments to advanced material models and in understanding the demands placed on our clients’ components. Our work is focused on modeling cyclical thermomechanical loads and on identifying the degradation mechanisms involved in corrosion, stress corrosion cracking and hydrogen embrittlement. In acute cases of damage, we can carry out surveys for our clients.
Simulation, identification and assessment of the microstructures and internal stresses related to manufacturing and loading
Investigations into material degradation through corrosion, stress corrosion cracking and hydrogen embrittlement
Identification of damage mechanisms associated with cyclical thermomechanical loads
Mechanism-based material models for time and temperature related plasticity and damage
Software for calculating life expectancy using finite elements programs
Damage analysis, identification of technical liability, surveys, development of new testing techniques
Construction of test rigs
Hydrogen reduces strength, ductility and durability in many metallic materials, a phenomenon collectively known as hydrogen embrittlement. The Fraunhofer IWM helps its‘ clients in selecting and evaluating/qualifying materials which come into contact with hydrogen, either during porduction or operation. We also develop solutions for the safe use/deployment of those components.
Driven by the long-term need of utilization of fluctuating regenerative energy resources Fraunhofer IWM invests in the development of methods for assessment and qualification of materials to be used in the molten salt environment of high temperature storage systems of solar power plants (TES thermal energy storage, CSP concentrated solar power plants).
We develop solutions which enable you to improve welding processes in your applications. Additionally, we support you in evaluating welded joints: was the welding done correctly? Did any cavities, pores or welding mistakes occur and/or was the welding incomplete? Did you create unwanted residual stress?