Non-Newtonian Fluid Speed Breaker

Speed bumps, as traffic calming devices, have been extensively used to reduce traffic speed on local streets. This study represents a unique application of Non-Newtonian fluid as Speed Bump. This technical paper relates to a device that reduces the speed of any over speeding vehicles travelling on a roadway. It is formed by a flexible material which consist of Non-Newtonian fluid in it i.e. each receptacle is impregnated with a dilatants shear thickening fluid. The material is placed under compression during impact when the vehicle strikes it and the fluid itself acts as means for controlling the resistance to deformation of the strip. Thus, if the vehicle travels at a low speed the fluid has a low viscosity and the strip is easily deformed, whereas if the speed of the vehicle is high the viscosity of the fluid is high and as a result has great resistance to deformation, thus forming a rigid obstacle to the passage of the vehicle. Drivers must always slow down when driving over the conventional speed breakers to prevent damage to their vehicle. However, the Non-Newtonian fluid Speed Breaker is sensitive to the speed of the vehicle. The vehicle needs to slow down only if it is over speeding.

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Variable Density Speed Hump

International Journal of Students Research in Technology & Management ◽

10.18510/ijsrtm.2016.423 ◽

2016 ◽

Vol 4 (2) ◽

pp. 35-37

Author(s):

Rajenderpal Singh Bhamrah

Keyword(s):

Shear Thickening ◽

Variable Density ◽

Great Resistance ◽

Shear Thickening Fluid ◽

Low Speed ◽

Technical Paper ◽

Rigid Obstacle ◽

Low Viscosity ◽

Flexible Material ◽

Resistance To Deformation

This technical paper relates to a device that reduces the speed of any overspeeding vehicles travelling on a roadway.It is formed by at least one hollow strip of flexible material, made up of several receptacles located in the shell body. Each receptacle is impregnated with a dilatant shear-thickening fluid. The material is placed under compression during impact when the vehicle strikes it and the fluid itself acts as means for controlling the resistance to deformation of the strip.Thus, if the vehicle travels at a low speed the fluid has a low viscosity and the strip is easily deformed, whereas if the speed of the vehicle is high the viscosity of the fluid is high and as a result has great resistance to deformation, thus forming a rigid obstacle to the passage of the vehicle. Drivers must always slow down when driving over the conventional speed bumps to prevent damage to their vehicle. However, the Variable Density Speed Hump is sensitive to the speed of the vehicle.The vehicle needs to slow down only if it is overspeeding.

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Design of shear thickening fluid/polyurethane foam skeleton sandwich composite based on non-Newtonian fluid solid interaction under low-velocity impact

Materials & Design ◽

10.1016/j.matdes.2021.110375 ◽

2021 ◽

pp. 110375

Author(s):

Feng Zhao ◽

Liwei Wu ◽

Zhenqian Lu ◽

Jia-Horng Lin ◽

Qian Jiang

Keyword(s):

Polyurethane Foam ◽

Newtonian Fluid ◽

Shear Thickening ◽

Low Velocity Impact ◽

Sandwich Composite ◽

Low Velocity ◽

Shear Thickening Fluid ◽

Velocity Impact ◽

Fluid Solid Interaction

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Simulation study on polishing of gear surfaces in non-Newtonian fluid

Science & Technology Development Journal - Engineering and Technology ◽

10.32508/stdjet.v3i3.658 ◽

2020 ◽

Vol 3 (3) ◽

pp. First

Author(s):

Duc Nam Nguyen ◽

Hùng Anh Lý ◽

Cong Truyen Duong

Keyword(s):

Surface Quality ◽

Newtonian Fluid ◽

Inclination Angle ◽

Shear Thickening ◽

Tooth Surface ◽

Polishing Process ◽

Shear Thickening Fluid ◽

Tooth Surfaces ◽

Inclination Angles ◽

Polishing Fluid

The non-Newtonian fluid is one type of shear thickening fluid which applied to process the complicated products. In this study, the new method of shear thickening fluid polishing (STFP) was used to polish the alloy steel SCM435 gears and the principle and performance of polishing process were also introduced. In the polishing process, the inclination angle of gears was believed to be an important parameter that affects the pressure and surface quality at different position on the tooth surfaces because it determines the contact between the polishing fluid and the tooth surface of the gear. The influence of the inclination angles on the pressure distribution and characteristics of fluid flow was performed by simulation process. The inclination angles of 0, 4, 8, 12, 16, 20 and 24 degrees were chosen in this study. As a result, the best inclination angle of gears is about 16 degree in the machining process. The tooth surfaces of gear have been in contact with the polishing fluid and the produced pressure reaches of 14.88 kPa. In addition, the influence of polishing speed on pressure were carried out in this study when inclination angle was established about 16 degree. The produced pressure on tooth surfaces increased with increasing the polishing speed. The results indicated that the different polishing speed also greatly affects the surface quality and machining efficiency. Therefore, the suggested machining method can become a suitable processing method for polishing the complicated products.

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Development of Flexible Extremities Protection utilizing Shear Thickening Fluid/Fabric Composites

10.21236/ada571815 ◽

2012 ◽

Author(s):

Mahesh Hosur ◽

Norman Wagner ◽

C. T. Sun ◽

Vijaya Rangari ◽

Jack Gillespie ◽

...

Keyword(s):

Shear Thickening ◽

Shear Thickening Fluid ◽

Fabric Composites

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Dynamic compressive response of 3D GFRP composites with shear thickening fluid (STF) matrix as cushioning materials

Journal of Composite Materials ◽

10.1177/0021998320984247 ◽

2021 ◽

pp. 002199832098424

Author(s):

Mohsen Jeddi ◽

Mojtaba Yazdani

Keyword(s):

Shear Thickening ◽

Low Velocity Impact ◽

Gfrp Composites ◽

High Concentration ◽

Low Velocity ◽

Shear Thickening Fluid ◽

Compressive Response ◽

Reinforced Polymer ◽

Glass Fiber Reinforced ◽

Shear Thickening Fluids

Whereas most previous studies have focused on improving the penetration resistance of Shear Thickening Fluids (STFs) treated composites, in this study, the dynamic compressive response of single and multi-ply 3 D E-Glass Fiber Reinforced Polymer (GFRP) composites with the STF matrix was investigated by using a drop-weight low-velocity impact test. The experimental results revealed the STF improved the compressive and cushioning performance of the composites such that with increasing its concentration, further improvement was observed. The five-ply composite containing the STF of 30 wt% silica nanoparticles and 1 wt% carbon nanotubes (CNTs) reduced the applied peak force by 56% and 26% compared to a steel plate and five-ply neat samples, respectively. A series of repeated impacts was performed, and it was found that the performance of high-concentration composites is further decreased under this type of loading.

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