Výsledky vyhledávání - "Alexandra Kühn"

Automatisierte Fertigung von Rotorblättern für Windenergieanlagen

Autor: Felix Kruse, Alexandra Kühn, Niels Stoffers, Thorsten Mahrholz, Yannis Grohmann

Publikováno v: Lightweight Design. 9:46-53

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 u

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bd6bafb0c9465a3f271fd21f1f18e7fd
https://doi.org/10.1007/s35725-015-0061-x

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Powder binders used for the manufacturing of wind turbine rotor blades. Part 1: Characterisation of resin-binder interaction and preform properties

Autor: Stefan Schmidt, Peter Wierach, Thorsten Mahrholz, Alexandra Kühn

Glass fibre reinforced plastics (GFRP) are the predominant materials used for wind turbine ro-tor blades. To manufacture blades in a vacuum-assisted resin infusion process (VARI), a binder is needed for fibre fixation and preform stability. Moreover,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4014a0715a9d92f78484282f0ef1dbd1
https://elib.dlr.de/127828/

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Magnetostrictive properties of epoxy resins modified with Terfenol-D particles for detection of internal stress in CFRP. Part 2: evaluation of stress detection

Autor: Peter Wierach, Michael Sinapius, Alexandra Kühn, Thorsten Mahrholz, Marcus Kubicka

Publikováno v: Journal of Materials Science. 48:6578-6584

The mechanical performance of carbon fibre reinforced polymers is predominantly limited by internal stress induced by resin shrinkage of the polymer matrix. Terfenol-D particles are investigated as internal sensors to detect the stress situation on a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4e55fbf024245b910e8af8a0d964fcd
https://doi.org/10.1007/s10853-013-7454-y

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Matrix optimization of CFRP parts concerning fire and impact properties with process acceleration

Autor: Jürgen Mosch, Thorsten Mahrholz, Alexandra Kühn

Publikováno v: CEAS Aeronautical Journal. 4:191-201

This paper is concerned with the optimization of fire resistance, impact properties and fast curing of CFRP. The investigation is part of the CFRP fuselage project. Nanoscale additives selected from the most promising materials are used to optimize f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e8c993b94f87862719823139aa85aedb
https://doi.org/10.1007/s13272-013-0069-9

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Determination of volumetric shrinkage of thermally cured thermosets using video- imaging

Autor: Wibke Exner, Michael Sinapius, Artur Szewieczek, Thorsten Mahrholz, Alexandra Kühn, Mark Opitz, Peter Wierach

Video-imaging is one method of analyzing the shrinkage of resins. For the measurement, a drop of resin is placed near an illumination source and its contour is imaged from the front with a camera. This paper presents a further development, detailed i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::723de7e1c8996a398602805bdf08151b
https://elib.dlr.de/102078/

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Magnetostrictive properties of epoxy resins modified with Terfenol-D particles for detection of internal stress in CFRP – Part 1: Materials and Processes

Autor: Thorsten Mahrholz, Peter Wierach, Alexandra Kühn, Michael Sinapius, Marcus Kubicka

Magnetostrictive particles like Terfenol-D are investigated with respect to their ability to detect internal stress, generated in carbon fibre-reinforced polymers (CFRP) in a non-destructive way. The results are presented in two parts. The first part

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a325ca7d420d8bdf5e244f66b8608bc
https://elib.dlr.de/102209/

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Advanced Flame Protection of CFRP Through Nanotechnology

Autor: Alexandra Kühn, Michael Sinapius

Publikováno v: Adaptive, tolerant and efficient composite structures ISBN: 9783642291890

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 o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::34a2624873b77227092584819415c38c
https://elib.dlr.de/80918/

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Polymer nanocomposites based on epoxy resin and ATH as a new flame retardant for CFRP: preparation and thermal characterisation

Autor: Michael Sinapius, Thorsten Mahrholz, Alexandra Kühn, Daniela Könnicke

Nanoscale aluminium trihydroxide (ATH) is examined to its suitability for carbon fibre reinforced plastics (CFRP) as a novel flame retardant. In particular the influence of particle size and concentration of ATH to the fire behaviour of epoxy polymer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1878e1c862ac190611f82329801d9abd
https://elib.dlr.de/70715/

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A novel extended-spectrum beta-lactamase CTX-M-23 with a P167T substitution in the active-site omega loop associated with ceftazidime resistance

Autor: Rainer Laufs, Enno Stürenburg, Dietrich Mack, Alexandra Kühn

Publikováno v: The Journal of antimicrobial chemotherapy. 54(2)

Objective: In recent years, cefotaximases of the CTX-M type have become a predominant cause of resistance to extended-spectrum cephalosporins in Gram-negative bacteria. Although most enzymes provide higher levels of resistance to cefotaxime than to c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0eabccd3a19c8130bc2e9760c39f4556
https://pubmed.ncbi.nlm.nih.gov/15201232

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