Hilger, A.; Kardjilov, N.; Lange, A.; Kupsch, A.; Hentschel, M.P.; Manke, I.: Neutron darkfield imaging of fiber composites. Materials Testing 63 (2021), p. 623-629
10.1515/mt-2020-0103
Open Access Version
Abstract:
While X-ray based darkfield imaging with grating interferometers is already widely used, darkfield imaging with neutrons has still a relatively small user community focused mostly on magnetic materials. Here, we demonstrate the application of neutron darkfield imaging byTalbot-Lau type grating interferometry to fiber reinforced plastics. Common carbon and glass fiber composites have been investigated including characteristic damage structures. The darkfield images show a strong signal response caused by fiber delamination, suitable fiber direction, particles, pores and cracks. The basic principles of neutron darkfield imaging applied to fiber composites are highlighted.