Effect of stick-slip on magneto-rheological elastomer with a magnetic field

Lian, Chenglong; Lee, Kwang-Hee; An, Jun-Wook; Lee, Chulhee

doi:10.1007/s40544-017-0150-1

Cited by 11 publications

(6 citation statements)

References 25 publications

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“…Wear depth decreased under fields and increased with vibration. Lian et al 381 investigated the stick-slip characteristics of MRE against aluminum plate. Stick-slip is originated from the difference between the static and dynamic friction forces.…”

Section: Applicationsmentioning

confidence: 99%

Magnetorheology: a review

2020

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Section: Applicationsmentioning

confidence: 99%

Magnetorheology: a review

2020

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“…The intensities measured after turning off the magnetic field are presented in Figure 8b and show a non-monotonic behaviour that resembles the properties of a slip-stick motion [51]. Due to a complex behaviour, no fitting procedure was performed for the obtained curves, but the characteristic switching-off time τ off was determined as the time interval between switching off the field ( t = 0) and the first maximum appearing in the dependence of I r0 ( t ).…”

Section: Resultsmentioning

confidence: 99%

Effect of Material Composition on Tunable Surface Roughness of Magnetoactive Elastomers

et al. 2019

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We investigated magnetic-field-induced modifications of the surface roughness of magnetoactive elastomers (MAEs) with four material compositions incorporating two concentrations of ferromagnetic microparticles (70 wt% and 80 wt%) and exhibiting two shear storage moduli of the resulting composite material (about 10 kPa and 30 kPa). The analysis was primarily based on spread optical reflection measurements. The surfaces of all four materials were found to be very smooth in the absence of magnetic field (RMS roughness below 50 nm). A maximal field-induced roughness modification (approximately 1 μm/T) was observed for the softer material with the lower filler concentration, and a minimal modification (less than 50 nm/T) was observed for the harder material with the higher filler concentration. All four materials showed a significant decrease in the total optical reflectivity with an increasing magnetic field as well. This effect is attributed to the existence of a distinct surface layer that is depleted of microparticles in the absence of a magnetic field but becomes filled with particles in the presence of the field. We analyzed the temporal response of the reflective properties to the switching on and off of the magnetic field and found switching-on response times of around 0.1 s and switching-off response times in the range of 0.3–0.6 s. These observations provide new insight into the magnetic-field-induced surface restructuring of MAEs and may be useful for the development of magnetically reconfigurable elastomeric optical surfaces.

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“…Stick-slip friction is a common phenomenon during the sliding process, which means the contact interface exhibited stick and slip alternately [1,2]. The occurrence of stick-slip friction would increase the instability and reduce the tribological performance [3,4]. And there are studies on stick-slip behavior at micro and atomic scales for the materials of amorphous structure [5], oriented crystalline structures like graphene [6] and graphite [7].…”

Section: Introductionmentioning

confidence: 99%

In-situ TEM studies on stick-slip friction characters of sp2 nanocrystallited carbon films

Fan

Huang

2022

Friction

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Carbon films with two different kinds of sp2 nanocrystallited structure were investigated to study the stick-slip friction with the in-situ and ex-situ tests. In-situ transmission electron microscope (TEM) observation and nanofriction tests revealed that the origins of stick and slip varied with shear stress and film deformation. At the stick stage, shear stress gradually increased with the contact strengthened until reached the shear strength to break the interfacial adhesion; at the slip stage, the shear stress decreased and accompanied with film deformation. During the sliding process, adhesive deformation resulted in the large stick-slip step while ploughing deformation led to a smoother step. Ex-situ nanofriction tests on a series of sp2 nanocrystallited carbon films with different irradiation energies showed the expected sliding behavior with the in-situ results. This study first clarified the mechanism of stick-slip friction with the in-situ TEM observation, which plays the important role for the micro and nano application of sp2 nanocrystallited carbon films.

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Effect of stick-slip on magneto-rheological elastomer with a magnetic field

Cited by 11 publications

References 25 publications

Magnetorheology: a review

Magnetorheology: a review

Effect of Material Composition on Tunable Surface Roughness of Magnetoactive Elastomers

In-situ TEM studies on stick-slip friction characters of sp2 nanocrystallited carbon films

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