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The paper gives a survey of the Soviet (Russian) -German activities which started in 1988 with the objective of creating a long-term scientific-technical cooperation in the field of transport and storage casks for spent nuclear fuel. The first step, i.e., the step of informing each other about the state of development is done. The more complicated second phase with concerted common activities of both the Russian and German competent authorities and industrial enterprises is intended to start in the near future.
Viscoelastic properties of the interphase in fibre reinforced polymers - measurement and simulation
(1999)
To examine the action of acid atmospheric precipitation on the light stabilisers in automotive coatings two common clearcoat types (TSA and 2K-PU) blended with commercially available HALS and UVA were subjected to artificial weathering (Acid Dew and Fog test and Acid-free weathering test) and natural weathering outdoors in Jacksonville, FL. Tracing gloss and haze during weathering the test results showed that the influence of acid stress on the long-term performance of the clearcoats depended on the kind of the stabilisation system.
The surface properties of original high strength and preoxidized high modulus carbon fibers were altered by electrocopolymerizing acryl amide and carbazole and therefore depositing a copolymer coating onto the fibers. Scanning electron microscopy and zeta-potential measurements confirmed the presence of a rough but dense and continuous electrocoating with a basic surface character. Therefore, lsquogoodrsquo adhesion behavior between the electrocoated carbon fibers and an epoxy resin matrix should be expected. The interfacial adhesion was measured using the single fiber pull-out and single fiber indentation test. It was shown that only lsquointermediatersquo adhesion was present between the carbon fibers and the electrocoating, but superior adhesion between the coating and epoxy resin exists. The single fiber model composites always failed at the fiber/electrocoating interface. However, as shown by using the indentation test, the interfacial adhesion between fibers and electrocoating can be significantly improved if preoxidized fibers are used as substrate for electropolymerization. A very high tensile strength for the electrocoating can be expected as derived from the single fiber pull-out tests.
Untertitel:
Zur Funktionsweise der Systeme
Unterscheidung in Fahrzeug-Stabilisierung und Anhänger-Wank-Stabilisierungsfunktion
Stand von Wissenschaft und Technik
allgemein anerkannte Regeln der Technik
Warum ist die Wirkvorschrift so wichtig? Gibt es Alternativen?
Ist eine Einführung von elektronischen Fahrstabilisierungseinrichtungen auch ohne gesetzliche Vorgabe denkbar?
Einbindung in den Markt (u. a. Bustouristik)
Welche weiteren Vorstöße werden unternommen, um die vorhandenen Systeme in Regelwerke und damit in die Flotten einzuführen?
Vorgehen in Dänemark