Abstract. Split Hopkinson Tension Bar (SHTB) experiments can be used to test the material behavior with high strain rates in tension loading. The influence of the specimen mounting and the specimen design on the test results was investigated. Three mounting methods were tested. The best signal is achieve using a mounting based on form fit. The three tested specimen designs all lead to a valid fracture behavior, but result in a different local strain rate.
Die komplexe Technik heutiger Kraftfahrzeuge und Antriebsstränge macht einen immer größer werdenden Fundus an Informationen notwendig, um die Funktion und die Arbeitsweise von Komponenten oder Systemen zu verstehen. Den raschen und sicheren Zugriff auf diese Informationen bietet die Reihe ATZ/MTZ-Fachbuch, welche die zum Verständnis erforderlichen Grundlagen, Daten und Erklärungen anschaulich, systematisch, anwendungsorientiert und aktuell zusammenstellt.Die Reihe wendet sich an Ingenieure der Kraftfahrzeugentwicklung und Antriebstechnik sowie Studierende, die Nachschlagebedarf haben und im Zusammenhang Fragestellungen ihres Arbeitsfeldes verstehen müssen und an Professoren und Dozenten an Universitäten und Hochschulen mit Schwerpunkt Fahrzeug-und Antriebstechnik. Sie liefert gleichzeitig das theoretische Rüstzeug für das Verständnis wie auch die Anwendungen, wie sie für Gutachter, Forscher und Entwicklungsingenieure in der Automobil-und Zulieferindustrie sowie bei Dienstleistern benötigt werden.
For the past few years the customer's demand for more fuel efficient and at the same time safer vehicles has steadily increased. Consequently, light weight design has become one of the main interests in engineering. With regard to sheet metal components, a new class of high manganese steels, based on the TWIP (twinning induced plasticity) effect, provides the opportunity of shaping light weight designed thin and complex sheet metal geometries with advanced crash performance. In terms of weldability, due to their thermo-physical properties (high content of C, Mn, Al, Si), FeMn steels have to be handled differently in comparison to conventional steel grades. Particularly dissimilar material combinations of FeMn and ferrite steels are in the center of interest for industrial applications. This study reveals that metallurgical properties of dissimilar welding seams can be influenced considerably by laser beam welding, resulting in a change of the mechanical properties of the seam which is practicable without using filler material as described in (Flügge et al., 2011).
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