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Properties of thermo-visco-elastic material 42-809 for manufacturing of vibrodamping elements – 3.part
Svoboda, Jaroslav ; Pešek, Luděk ; Frölich, V. ; Klášterka, Petr
In the report the results of rubber elements properties made of thermo-visco-elastic material 42-809 at low temperatures are summariesed. The tests were performed by a loading fatigue machine INSTRON 8502 in a climate chamber. For improving an accuracy of measurement the test machine was equipped with a lesser force transduser Rumburk with a range up to 40kN. The report includes results of static and dynamic characteristics in temperature range 0 ÷ -50°C, measurement of residual deformations, relaxation time and evaluation of a cyclic loading influence to shapes of static characteristics of the rubber. Furthermore the results of rubber element life time and evaluation of friction behaviour at lower temperatures are presented. The limit lines for 10% of residual deformations are drawn here, too.
Properties of the termo-visco-elastic material 42-809 for the production of vibrodump elements - 2. part
Svoboda, Jaroslav ; Pešek, Luděk ; Fröhlich, Vladislav ; Klášterka, Petr
The contribution deals with results,the goal which has been to obtain friction properties of rubber elements made of the material 42-809. The results were expressed in the form of friction forms as functions of amplitudes of vibrations and a quantity of pressure force.

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