Quality

Project examples of the research topic Quality

© Fraunhofer IGCV

work safety in additive manufacturing

SafetyAM

In the case of laser beam melting, metallic components from powder material are generated by layered construction and a selective powder melting by means of a laser.

© Fraunhofer IWM

Optimization of shape distortions

Graded or multi-material parts made out of ceramic and/or metal exhibit inhomogeneous shrinkage during final sintering

© Fraunhofer IFAM

Quality control of powder

Development of powder specifications for Laser Beam Melting and a quality control strategy for ABM powders

© Fraunhofer IWM

Local properties of additive manufactured parts

In the completed EU-project »SIMCHAIN« a simulation chain was developed that allows to study the influence of process parameter on the local mechanical properties of additive manufactured parts.

© Fraunhofer IWM

Simulation of residual stresses and warpage in stereolithography

Resins for stereolithography shrink during polymerization. During the layer wise curing this leads to residual stresses and warpage

© Fraunhofer IWM

Numerical simulation of powder spreading in powder-bed systems

Final surface roughness and porosity is influenced by the homogeneity of the individual powder-bed layers.

© Fraunhofer EMI

Strain rate dependent material behavior for dynamic loads

Additively manufactured materials are analyzed in experiment and simulation. In particular, the strain rate dependence of the material behavior is investigated which is of high relevance for special load cases like car crash.

Making quality visible

To improve the reliability and shape accuracy of all additively manufactured products, we develop individual safety systems for your entire product development process:

- Products and processes - reproducible processes & dimensionally accurate products

The Fraunhofer Competence Field Additive Manufacturing supports you with its many years of cross-industry knowledge in the integration of quality assurance tools and in the development and optimization of your quality management system.

More information

Products and processes

Computer simulation and the technologies of Rapid Prototyping/Rapid Tooling (RP/RT) are becoming increasingly important in industrial product development due to their potential for cost and time savings. Even before a product, for example a newly developed machine component, is actually manufactured, the manufacturing process can optimize the entire development process. In a further step, the RP/RT can be used to produce first prototypes, small series or tool inserts for various manufacturing processes quickly and cost-effectively. In addition to the simulation, a complete component verification or optimization is also possible.

Reliability and shape accuracy of the products

Manufacturing processes shape the application behavior and reliability of components. Volume changes of the material during processing, for example shrinkage during the polymerization of a stereolithography resin or during the sintering of powders, can lead to distortions in shape, internal stresses and in the worst case even to the formation of cracks. The simulation of manufacturing steps contributes to the understanding of the relationship between process parameters and component properties. Experimental methods such as the incremental borehole method or X-ray diffraction are used to analyze residual stresses.