Alexandra Kühn
German Aerospace Center
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Featured researches published by Alexandra Kühn.
Lightweight design | 2016
Felix Kruse; Alexandra Kühn; Thorsten Mahrholz; Yannis Grohmann; Niels Stoffers
Der Erfolg einer Automatisierungslosung fur die Faserablage wird vor allem daran gemessen, ob es gelingt, die Fertigungskosten des Rotorblatts sowie dessen Fertigungszeit zu senken. Die Hurden hierfur sind hoch. Bei den aktuellen Blattarchitekturen und Bauweisen mussen nicht nur Fasern abgelegt, sondern auch Stutzstoffe in den Bereichen des Blatts mit Sandwichhauten platziert werden. Dieser Beitrag des DLR beschreibt, dass eine erfolgreiche Automatisierung fur die Faserablage nicht nur die Fertigungskosten reduzieren muss, sondern auch die Materialeinzelkosten.
Archive | 2013
Alexandra Kühn; Michael Sinapius
This chapter refers about the optimization of fire resistance of CFRP. For this optimization the most promising nano scaled additives are used and varied regarding the particle content, size and effect of flame retardancy. One major challenge is to optimize the particle dispersion and to determine the optimal particle concentrations in consideration of the effect of flame retardancy and the resulting material properties. Additionally a fire testing method has to be determined that resolves the potentially small differences in the used variations. Therefore standard fire and mechanical tests are used as well as a simple thermal material method, given with the thermo gravimetric analysis (TGA) including a single differential thermal analysis (SDTA) that also suits for a fast comparison of the materials fire properties. Hereby obtained results are compared and a related behaviour of the fire properties can be shown between standard fire tests and thermal material tests using the TGA-device.
Journal of Materials Science | 2011
Daniela Könnicke; Alexandra Kühn; Thorsten Mahrholz; Michael Sinapius
Journal of Materials Science | 2012
Marcus Kubicka; Thorsten Mahrholz; Alexandra Kühn; Peter Wierach; Michael Sinapius
Journal of Materials Science | 2013
Marcus Kubicka; Thorsten Mahrholz; Alexandra Kühn; Peter Wierach; Michael Sinapius
CEAS Aeronautical Journal | 2013
Alexandra Kühn; Thorsten Mahrholz; Jürgen Mosch
Polymer Testing | 2016
Wibke Exner; Alexandra Kühn; Artur Szewieczek; Mark Opitz; Thorsten Mahrholz; Michael Sinapius; Peter Wierach
Polymer Composites | 2018
Stefan Schmidt; Thorsten Mahrholz; Alexandra Kühn; Peter Wierach
Archive | 2017
Alexandra Kühn; Thorsten Mahrholz; Martin Liebisch
Archive | 2016
Yannis Grohmann; Niels Stoffers; Alexandra Kühn; Thorsten Mahrholz