Evolution of coefficient of friction between tire and pavement under wet conditions using surface free energy technique

Singh, Dharamveer; Patel, H. M.; Habal, Ayyanna; Das, Aditya Kumar; Kapgate, Bharat P.; Rajkumar, K.

doi:10.1016/j.conbuildmat.2019.01.122

Cited by 15 publications

(5 citation statements)

References 10 publications

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“…The friction coefficient decreased slightly and fluctuates around 0.70 afterwards. On the other hand, the friction coefficient of Ni surface with self-assembled alkyl mercaptan was much lower, which would be due to the lower surface free energy of Ni surface with the SAMs [33]. It is demonstrated that the alkyl mercaptan SAMs had a good lubricity and could effectively reduce the friction coefficient.…”

Section: Friction and Wear Testmentioning

confidence: 95%

Self-Assembled Monolayers of Alkanethiols on Nickel Insert: Characterization of Friction and Analysis on Demolding Quality in Microinjection Molding

et al. 2021

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When the part geometry scaling down from macro to microscale level, the size-induced surface effect becomes significant in the injection molding process. The adhesion between polymer and nickel (Ni) mold insert during the process can lead to defects in necking, warping and deformation of microstructure. In this study, the self-assembled monolayers (SAMs) with low surface energy were deposited on the Ni surface to reduce the adhesion and further improve the demolding quality of the microstructure. Results show that the alkyl mercaptan SAMs with chemical bonds and close alignment can be successfully deposited on the surface of Ni by the solution deposition method. The contact angle, surface free energy, and friction coefficient before and after anti-adhesion treatment on the surface of mold insert were measured. In addition, the anti-adhesion properties of different alkyl mercaptan materials and the correspondingly replication quality of microstructure parts after injection molding were analyzed. It is found that the Ni mold insert treated by the perfluorodecanethiol has the best wear resistance and still shows good reproducibility at the 100th demolding cycle.

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Section: Friction and Wear Testmentioning

confidence: 95%

Self-Assembled Monolayers of Alkanethiols on Nickel Insert: Characterization of Friction and Analysis on Demolding Quality in Microinjection Molding

et al. 2021

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“…Icy and snowy pavement take on various forms. Different forms of icy and snowy pavement have different friction coefficients and effects on traffic [55]. Given that main roads are the main channel of urban travel, cities in cold regions generally adopt the snow-clearing standard of 'immediately down and clear'.…”

Section: Climatic Conditions (Cc ( )mentioning

confidence: 99%

Identification Method of Main Road Traffic Congestion Situation in Cold-Climate Cities Based on Potential Energy Theory and GPS Data

et al. 2022

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Traffic congestion is a global problem. Affected by climate, the issue of congestion in cold-climate cities is more serious. To comprehensively and accurately identify the traffic congestion situation on the main roads of cold-climate cities and to provide a reference for city managers for congestion treatment, this study applies the theory of potential energy to the problem of traffic congestion, draws on the symmetry of potential energy and the function mechanism of artificial potential fields, and establishes a traffic congestion potential energy model for the main roads in cold-climate cities. Taking Global Positioning System (GPS) data as the primary data, the model parameters are calibrated using a combination of subjective and objective empowerment methods, and the investigation into the congestion perception level determines the division threshold of the congestion potential energy level. Test results are encouraging, and the method considers the state and the trends and can avoid problems such as lagging road condition information.

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“…The skid resistance of pavement, especially in wet conditions, is of the utmost importance. In fact, a set of studies showed that approximately 20% of all road accidents occur when the surface is wet [26,28].…”

Section: Skid Resistancementioning

confidence: 99%

A Review on Acoustic and Skid Resistance Solutions for Road Pavements

Callai

Sangiorgi

2021

Infrastructures

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As cities grow in size, traffic also increases, thus making the population more exposed to road noise and traffic accidents. It is therefore important to study and understand which properties of the pavement influence its acoustic impact and skid resistance performance. The pavement texture plays a major role in generating noise and friction, and it can be engineered in order to control both of them at the same time. The phenomena regulating skid resistance are well understood today. The same applies for noise generation and propagation; the literature contains methods of designing the pavement surface layer to achieve consistent results. Several types of solutions can be found for asphalt mixtures, most of them derived from decades of studies and research. They use different approaches to be effective for noise and friction, but all have in common the control of the surface’s macro and microtexture. Finally, some considerations are made regarding novel paving solutions with artificial aggregates instead of natural ones to address noise and skid resistance.

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Evolution of coefficient of friction between tire and pavement under wet conditions using surface free energy technique

Cited by 15 publications

References 10 publications

Self-Assembled Monolayers of Alkanethiols on Nickel Insert: Characterization of Friction and Analysis on Demolding Quality in Microinjection Molding

Self-Assembled Monolayers of Alkanethiols on Nickel Insert: Characterization of Friction and Analysis on Demolding Quality in Microinjection Molding

Identification Method of Main Road Traffic Congestion Situation in Cold-Climate Cities Based on Potential Energy Theory and GPS Data

A Review on Acoustic and Skid Resistance Solutions for Road Pavements

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