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Investigations (for characterisation) to characterize the fatigue behaviour of extrusion pressed short fibre reinforced glass specimens with hysteresis measurements

Trough the insertion of fibres with strength and high modulus, the mechanical properties of inorganic glasses can be considerably improved in comparison with non-reinforced glasses. Former studies were mainly concentrated on the determination of quasi-static and fracture mechanical properties of these glasses whereas their fatigue behavior has barely been studied. In the present work pure glass specims and SiC-short-fibre reinforced glass specimens were produced by extrusion and investigated in stress and strain controlled 3-point-bending tests in the threshold and alternating range at ambient and elevated temperatures. The cyclic deformation behavior was characterized and the failure mechanisms were evaluated by hysteresis measurements as functions of loading amplitudes, number of cycles and fibre volume fraction. Light and scanning electron microscopic investigations of the specimen surfaces and the fracture surfaces were performed in order to determine the onset of damage and to evaluate the damage progress on the specimen surfaces. Crack formation and growth processes were correlated with the hysteresis values, the mean edge stress, the mean edge strain and the development of the damping values.

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Author
 Kurt Marchetti

Kurt Marchetti
Lehrstuhl für Werkstoffkunde
Universität Kaiserslautern

Information

Free keywords: SiC-short-fibre reinforced glasses, Fatigue behavior, Extrusion, 3-point-bendig test, 4-point-bending test, cyclic deformation behavior, Hysteresis measuring method, Failure mechanism, Crack formation, Crack growth
Institute / chair: Fachbereich Maschinenbau und Verfahrenstechnik der Universität Kaiserslautern
Language: German
Technical consultant for expert services: Prof. Dr.-Ing. Dietmar Eifler (Betreuer), Prof. em. Dr.-Ing. Erwin Roeder
Publication year: 1997
Provider: Wissenschaftlicher Arbeitskreis Kunststofftechnik (WAK) / Kunststoffe.de

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