Co-author Tobias Neuwirth adjusts the setup for the neutron grating interferometry at the ANTARES instrument of the research neutron source Heinz Maier-Leibnitz (FRM II) at the Technical University of Munich. Image: B. Ludewig / TUM
Co-author Tobias Neuwirth adjusts the setup for the neutron grating interferometry at the ANTARES instrument of the research neutron source Heinz Maier-Leibnitz (FRM II) at the Technical University of Munich. Image: B. Ludewig / TUM Comparatively, neutrons detect most defects in 3D printed components - In the manufacture of turbines conventional processes often reach their limits. Therefore, additive manufacturing is increasingly used to produce complex, curved components with intricate structures. A research team from the Technical University of Munich (TUM) has now examined common methods used to locate defects inside components. In their investigation neutron grating interferometry, performed at the Heinz Maier-Leibnitz research neutron source (FRM II), achieved the best defect detection. Laser beam melting is a common 3D printing process for turbine blades with internal cooling channels. During this process, a laser melts a thin layer of metal powder in predefined areas.
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