Detail publikačního výsledku

Changing the behavior of MR fluids during long term operation

ROUPEC, J.; MAZŮREK, I.; STRECKER, Z.

Originální název

Changing the behavior of MR fluids during long term operation

Anglický název

Changing the behavior of MR fluids during long term operation

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

The article describes results of durability test of a magnetorheological fluid (MRF) which was carried out in a custom design rheometer. The rheometer design allows measurement of the rheological properties of MR fluid and its exposure to a long-term loading simultaneously, without any manipulation of the measured sample. Owing to this, changes of the two most important parameters describing the behavior of MR fluids - dynamic viscosity and yield stress - could be followed during the durability test. The dependence of yield stress and dynamic viscosity on temperature and magnetization current was evaluated. The results show a significant change of the yield strength (500%) during the durability test. Independence of the yield stress on the temperature was conclusively proven. The viscosity decreased by 35% from its initial value after dissipation of 9000kJ out of total 119000kJ and then remained the same until the end of the durability test. Viscosity dependence on temperature was evaluated.

Anglický abstrakt

The article describes results of durability test of a magnetorheological fluid (MRF) which was carried out in a custom design rheometer. The rheometer design allows measurement of the rheological properties of MR fluid and its exposure to a long-term loading simultaneously, without any manipulation of the measured sample. Owing to this, changes of the two most important parameters describing the behavior of MR fluids - dynamic viscosity and yield stress - could be followed during the durability test. The dependence of yield stress and dynamic viscosity on temperature and magnetization current was evaluated. The results show a significant change of the yield strength (500%) during the durability test. Independence of the yield stress on the temperature was conclusively proven. The viscosity decreased by 35% from its initial value after dissipation of 9000kJ out of total 119000kJ and then remained the same until the end of the durability test. Viscosity dependence on temperature was evaluated.

Klíčová slova

Magnetorheological fluid, MRF, durability test, yield stress, dynamic viscosity, shear rate

Klíčová slova v angličtině

Magnetorheological fluid, MRF, durability test, yield stress, dynamic viscosity, shear rate

Autoři

ROUPEC, J.; MAZŮREK, I.; STRECKER, Z.

Rok RIV

2012

Vydáno

09.05.2011

Nakladatel

IT ASCR

Místo

Brno

ISBN

978-80-87012-33-8

Kniha

Engineering Mechanics 2011

Edice

17th international Conference

Strany od

519

Strany do

522

Strany počet

4

BibTex

@inproceedings{BUT72626,
  author="Jakub {Roupec} and Ivan {Mazůrek} and Zbyněk {Strecker}",
  title="Changing the behavior of MR fluids during long term operation",
  booktitle="Engineering Mechanics 2011",
  year="2011",
  series="17th international Conference",
  number="1",
  pages="519--522",
  publisher="IT ASCR",
  address="Brno",
  isbn="978-80-87012-33-8"
}