A5103141801- Railway Engineering and Dynamics
- Adhesion, Friction, and Surface Interactions
- Brake Systems and Friction Analysis
- Mechanical stress and fatigue analysis
- Gear and Bearing Dynamics Analysis
- Sports injuries and prevention
- Electrospun Nanofibers in Biomedical Applications
- Tunneling and Rock Mechanics
- Additive Manufacturing and 3D Printing Technologies
- Innovations in Concrete and Construction Materials
- Railway Systems and Materials Science
- Sports Performance and Training
- Surface Treatment and Coatings
- Engineering Applied Research
- Electrical Contact Performance and Analysis
- Lubricants and Their Additives
- Bone Tissue Engineering Materials
- biodegradable polymer synthesis and properties
- Soil Mechanics and Vehicle Dynamics
- Metal Alloys Wear and Properties
- Architecture and Computational Design
University of Sheffield
2016-2023
UConn Health
2011
The aim of this paper was to review the current state research for top rail friction modifiers (TORFM). In railway industry, is a catch all term wide range products applied different purposes which has led confusion. It hoped that recently published definitions will aid industry better understanding and how they function. benefits are well understood with large body supporting benefits. Comparatively, there lot less knowledge optimum amount product achieve or far down track from an...
The success of the scaffold-based bone regeneration approach critically depends on biomaterial's mechanical and biological properties. Cellulose its derivatives are inherently associated with exceptional strength biocompatibility due to their β-glycosidic linkage extensive hydrogen bonding. This polymer class has a long medical history as dialysis membrane, wound care system pharmaceutical excipient. Recently cellulose-based scaffolds have been developed evaluated for variety tissue...
Accurate friction measurement is vital to apply appropriate management techniques the wheel/rail interface. This work analyses different under a variety of conditions in laboratory and field. Tests have been carried out using pendulum tester, hand-push tribometer, twin-disc machine full-scale rig UK Colombia for interfacial rail hardness. The has found be more sensitive than tribometer. due area that sweeps being smaller, so it can carefully controlled therefore measure surface condition...
This paper describes two methods, carried out at different test scales, for assessing the friction modifier performance. Study A used wear data from a full-scale rig voestalpine Schienen GmbH and compared it with twin disc tests using SUROS machine University of Sheffield. B ‘retentivity’ data, Sheffield, tests. concluded that good correlation existed between scales although assumptions made in contact calculation introduce large spread into results. There was greater sets more severe...
Trackside lubricators are designed to deliver grease passing wheel flanges reduce and rail wear on curves. Ensuring that they set up sufficient for the range of vehicles a site can be challenge. For example, vehicle dynamics modelling investigations have shown wheels passenger do not run as close face those freight vehicles, meaning less likely contact lubricate subsequent To investigate effects different trackside devices, influence parameters governing pickup, including lateral...
Top-of-Rail products that give intermediate friction offer many benefits when applied to the wheel/rail interface. Water-based top-of-rail modifiers (TOR FMs), have been shown reduce energy consumption, wear, noise, corrugation and rolling contact fatigue. This work was aimed at developing a test approach, based on High Pressure Torsion (HPT) method, allowed an improved assessment of their performance over those recycle constantly same surface. The outputs would then be used parameterise...
The railway industry uses top-of-rail products to control and manage the friction in wheel/rail interface help ensure efficient train operations reduce wheel rail damage. A product is typically applied from a wayside applicator that pumps puddle onto head where passing will pick it up then transfer down track. aim of this study was mechanisms water-based modifiers (TOR-FMs) how they are linked conditions interface. were split into three parts: pick-up, carry-on consumption. Pick-up looks at...
Test methodologies originally developed for greases have been adapted to be used top of rail friction modifiers (TORFMs). This has included: a small-scale benchtop tribometer measure the tackiness different TORFMs, attaching an applicator bar section and rolling scaled-wheel through TORFM applied head analyse effect variables on pick-up, applying full-scale test facility scaling effects slip, load speed pick-up. These methods can relative performance TORFMs with respect how much product is...