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Properties of thermo-visco-elastic material 42-809 for vibro-damping segment production - 3.part
Svoboda, J. ; Pešek, Luděk ; Frölich, V. ; Klášterka, Petr
The mechanical properties of rubber elements made of thermo-visco-elastic material 42 -809 at low temperatures are summarized in the report. The tests were performed in a climate chamber bought by company INOVA Prague. The chamber was built in a fatigue machine INSTRON 8502 and the temperature range is from -50 up to 180 C. For improvement of a measurement accuracy and loading the force cell with a range up to 40kN was installed. The original sample fixtures of the machine were substituted by two rods ending by supporting plate. The rods went through the bottom and top lids of the chamber. The results of static and dynamic characteristics for temperature from -50 to 0 C, measurement of residual deformation and relaxation time, evaluation of a cyclic loading influence on static characteristics and life-time characteristics for lower temperature are herein presented.
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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.
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Properties of thermo-visco-elastic material 42-809 for vibro-damping segment production
Svoboda, J. ; Pešek, Luděk ; Frölich, V. ; Klášterka, Petr
The mechanical properties of rubber elements made of thermo-visco-elastic material 42 -809 at low temperatures are summarized in the report. The tests were performed in a climate chamber bought by company INOVA Prague. The chamber was built in a fatigue machine INSTRON 8502 and the temperature range is from -50 up to 180 C. For improvement of a measurement accuracy and loading the force cell with a range up to 40kN was installed. The original sample fixtures of the machine were substituted by two rods ending by supporting plate. The rods went through the bottom and top lids of the chamber. The results of static and dynamic characteristics for temperature from -50 to 0 C, measurement of residual deformation and relaxation time, evaluation of a cyclic loading influence on static characteristics and life-time characteristics for lower temperature are herein presented.
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