Fatigue

Controlling material fatigue

We:

determine the static and fatigue strength as well as the safety of components

support you in material selection and design optimization for cyclic loaded components

investigate the lightweight potential of load-bearing components and structures thus avoiding over-dimensioning and thereby saving costs for material, production and transport

support you in the material substitution for existing and new constructions

help you to improve the endurance limit of metallic components by mechanical surface treatment and to avoid fatigue fractures

assist you to handle production-related material defects in a safe and reliable way

advise you with respect to continuation of component operation and the lifetime extension of metallic structures

support you with numerical welding simulation to determine the residual stress state and the distortion of your components in order to evaluate their lifetime

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Services

Numerical and experimental stress and strain analysis of components under static and cyclic loading

Numerical component assessment under static and cyclic loading experimentally supported by component tests

Numerical and experimental strength and safety analysis

Welding simulation and strength analysis of welded joints under consideration of residual stress and distortion

Numerical simulation of shot-peening, deep rolling and high frequency mechanical impact and resulting residual compressive stresses in the surface-near layer of metallic structural materials

Calculation of service lifetime of mechanical surface-treated (such as shot-peened, deep rolled and high frequency mechanical impact) components including the quantification of the lifetime improvement and the estimation of the cost-benefit ratio

Material qualification

Vibrations and shock tests and experimental modal analysis

Microstructure and failure analysis

Contact us! Together we'll find a customized solution for the challenges you face.

How to work with the Fraunhofer IWM

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Selection of measurement and equipment highlights

Electromechanical, servo-hydraulic and resonance testing machines (N to MN) to carry out static and cyclic material and component tests

Equipment to perform fracture mechanical tests (i.e. ASTM E399, E1820, E1921 and E647) over large force and temperature ranges

Multi-axial loading devices (tension-torsion; span) for multiaxial component testing

Air-conditioned shock and vibrations tests

Metallography and fracture surface analysis

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