Publication detail
Changing the behavior of MR fluids during long term operation
ROUPEC, J. MAZŮREK, I. STRECKER, Z.
English title
Changing the behavior of MR fluids during long term operation
Type
Paper in proceedings (conference paper)
Language
en
Original abstract
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.
Keywords in English
Magnetorheological fluid, MRF, durability test, yield stress, dynamic viscosity, shear rate
Released
2011-05-09
Publisher
IT ASCR
Location
Brno
ISBN
978-80-87012-33-8
Book
Engineering Mechanics 2011
Pages from–to
519–522
Pages count
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"
}