Next Article in Journal
Substrate Temperature Dependent Properties of Sputtered AlN:Er Thin Film for In-Situ Luminescence Sensing of Al/AlN Multilayer Coating Health
Previous Article in Journal
Characterization and Analysis of Strain Heterogeneity at Grain-Scale of Titanium Alloy with Tri-Modal Microstructure during Tensile Deformation
Previous Article in Special Issue
Structure-Function Correlative Microscopy of Peritubular and Intertubular Dentine
Article

Material Characterization of a Magnetorheological Fluid Subjected to Long-Term Operation in Damper

1
Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100 Kuala Lumpur, Malaysia
2
Mechanical Engineering Department, Faculty of Engineering, Universitas Sebelas Maret (UNS), Jl. Ir. Sutami 36A, Kentingan, Surakarta, 57126 Central Java, Indonesia
3
National Center for Sustainable Transportation Technology (NCSTT), 40132 Bandung, Indonesia
4
Department of Mechanical Engineering, Vocational College, Universitas Gadjah Mada (UGM), Jl. Yacaranda Sekip Unit IV, 55281 Yogyakarta, Indonesia
5
Department of Mechanical Engineering, Inha University, 253, Yonghyun-dong, Namgu, 22212 Incheon, Korea
*
Authors to whom correspondence should be addressed.
Received: 8 October 2018 / Revised: 31 October 2018 / Accepted: 1 November 2018 / Published: 6 November 2018
(This article belongs to the Special Issue ICKEM2018 - Hierarchically Structured Materials (HSM))
This paper investigates the field-dependent rheological properties of magnetorheological (MR) fluid used to fill in MR dampers after long-term cyclic operation. For testing purposes, a meandering MR valve was customized to create a double-ended MR damper in which MR fluid flowed inside the valve due to the magnetic flux density. The test was conducted for 170,000 cycles using a fatigue dynamic testing machine which has 20 mm of stroke length and 0.4 Hz of frequency. Firstly, the damping force was investigated as the number of operating cycles increased. Secondly, the change in viscosity of the MR fluid was identified as in-use thickening (IUT). Finally, the morphological observation of MR particles was undertaken before and after the long-term operation. From these tests, it was demonstrated that the damping force increased as the number of operating cycles increases, both when the damper is turn on (on-state) and off (off-state). It is also observed that the particle size and shape changed due to the long operation, showing irregular particles. View Full-Text
Keywords: MR fluid; long-term operation; double-ended damper; magnetic field; rheological properties; morphology observation MR fluid; long-term operation; double-ended damper; magnetic field; rheological properties; morphology observation
Show Figures

Figure 1

MDPI and ACS Style

Utami, D.; Ubaidillah; Mazlan, S.A.; Imaduddin, F.; Nordin, N.A.; Bahiuddin, I.; Abdul Aziz, S.A.; Mohamad, N.; Choi, S.-B. Material Characterization of a Magnetorheological Fluid Subjected to Long-Term Operation in Damper. Materials 2018, 11, 2195. https://0-doi-org.brum.beds.ac.uk/10.3390/ma11112195

AMA Style

Utami D, Ubaidillah, Mazlan SA, Imaduddin F, Nordin NA, Bahiuddin I, Abdul Aziz SA, Mohamad N, Choi S-B. Material Characterization of a Magnetorheological Fluid Subjected to Long-Term Operation in Damper. Materials. 2018; 11(11):2195. https://0-doi-org.brum.beds.ac.uk/10.3390/ma11112195

Chicago/Turabian Style

Utami, Dewi, Ubaidillah, Saiful A. Mazlan, Fitrian Imaduddin, Nur A. Nordin, Irfan Bahiuddin, Siti A. Abdul Aziz, Norzilawati Mohamad, and Seung-Bok Choi. 2018. "Material Characterization of a Magnetorheological Fluid Subjected to Long-Term Operation in Damper" Materials 11, no. 11: 2195. https://0-doi-org.brum.beds.ac.uk/10.3390/ma11112195

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop