A5090665471- Tribology and Lubrication Engineering
- Lubricants and Their Additives
- Adhesion, Friction, and Surface Interactions
- Tribology and Wear Analysis
- Gear and Bearing Dynamics Analysis
- Aluminum Alloys Composites Properties
- Advanced ceramic materials synthesis
- Particle Dynamics in Fluid Flows
- Dielectric materials and actuators
- Composite Structure Analysis and Optimization
- Polymer Nanocomposites and Properties
- Erosion and Abrasive Machining
- Innovations in Concrete and Construction Materials
- Brake Systems and Friction Analysis
- High-Temperature Coating Behaviors
- Photopolymerization techniques and applications
- Numerical methods in engineering
- Fiber-reinforced polymer composites
- High-Velocity Impact and Material Behavior
- Powder Metallurgy Techniques and Materials
- Polymer composites and self-healing
- Mechanical Behavior of Composites
Guntur Medical College
2021
National Institute of Technology Warangal
2019-2020
Textured surfaces have been remarkable in improving the frictional performance of sliding contacts, particularly at instances such as boundary or mixed lubrication regimes. This article reports results an experimental and numerical study carried out by introducing surface textures form protrusions to investigate its effects on friction under a regime. The produced chemical etching process are tested pin disc test rig varying area density height texture. In simulation, modified Reynolds...
Shape memory polymer is widely used in bio-medical applications such as stents, sutures, drug delivery etc., However, the shape recovery behaviour and mechanical properties these are crucial may be affected during shelf storage. The present research, therefore explores effect of life on mechanical, thermal performance polyurethane (PU) based (SMP). Experimental samples S1, S3, S5 S10 were prepared from pellets that stored for 1,3,5 10-year time duration respectively. FTIR analysis revealed...
Mechanical and tribological behavior of five layered Al/Cu functionally graded material (FGM) produced by powder metallurgy was presented in the study. Compressive strength hardness evaluated on Universal testing machine Vickers tester respectively. Tribological characteristics terms frictional coefficient wear rate examined pin-on-disc tribometer under influence different normal loading, sliding velocity distance conditions. FGM showed varied along thickness direction maximum 86 HV found at...
Purpose In an internal combustion engine, piston ring-cylinder liner tribo pair is one among the most critical rubbing pairs. Most of energy produced by engine dissipated as frictional losses which major portion contributed pair. Hence, proper design tribological parameters essential and can effectively reduce friction wear, thereby improving performance engine. This paper aims to use surface texturing, effective feasible method, improve Design/methodology/approach this paper, influence...
A five-layered aluminum–copper metal functionally graded material was developed through powder metallurgy process. The sample comprises different weight percentages of copper and aluminum that vary from 0 wt% to 100 wt % along the thickness direction. Erosion wear performed on air jet erosion testing apparatus at a constant impact angle 90 o velocity 151 m/s. It observed decreases when there is an increase in content. Layer 1 comprising has shown 76.92% lower compared layer 5 (100 aluminum)....
A substantial increase in research activity on functionally graded materials (FGMs) was foreseen the past few decades owing to their high strength and stiffness, design flexibility, multi-functional features. However, majority of literature confined uni-directional (1D) gradation material constituents. As a result, usage limited advanced applications such as aircraft frames shuttles, propulsion systems, machine elements wherein temperature is distributed along two or more directions. Thus,...
Abstract The present research is aimed to understand the influence of graphene-reinforced carbon/Kevlar hybrid fabric epoxy composites. Samples HG0, HG2, HG4, and HG6 are fabricated using four layers mat with varying graphene weight percentage as 0, 2, 4, 6 wt.%, respectively. Mechanical characterizations such hardness, tensile, flexural strength were individually assessed. Thermal stability evaluated through thermos-gravimetric analysis. Composite high filler loading showed 71% 114.4%...
Abstract It is proved that the optimal design of surface textures (positive or negative) improve lubrication performance by generating extra hydrodynamic pressure at interface sliding pairs. In present work, effect various positive on parallel contact under mixed researched. The modified Reynolds equation and asperity model are solved simultaneously to assess minimum film thickness for different shape textures. results depict elliptical shaped texture generate high as well conjunction than...
Proper lubrication and surface modification are key factors to improve the tribological behavior of interacting sliding surfaces under lubricated conditions. Surface texturing has found be an emerging technique that modifies deterministically by producing features in form asperities or grooves with specific shape, size distribution. The present paper address impact positive textures (protrusions) number direction on friction wear parallel contacts. square shaped created specimen ink-jet...