Advances in Tribology最新文献_第8页

Analysis of Tribological Behavior of Carbon Nanotube Based Industrial Mineral Gear Oil 250 cSt Viscosity 黏度为250 cSt的碳纳米管基工业矿物齿轮油摩擦学行为分析

IF 2.6

Advances in Tribology Pub Date : 2014-03-13 DOI: 10.1155/2014/341365

S. Bhaumik, S. Prabhu, Kingsly Jeba Singh

引用次数: 37

Solid Particle Erosion of Date Palm Leaf Fiber Reinforced Polyvinyl Alcohol Composites 枣椰叶纤维增强聚乙烯醇复合材料的固体颗粒侵蚀性能

IF 2.6

Advances in Tribology Pub Date : 2014-01-22 DOI: 10.1155/2014/293953

J. Mohanty, S. N. Das, H. Das, T. K. Mahanta, S. B. Ghadei

引用次数: 17

Effect of Nanoadditives with Surfactant on the Surface Characteristics of Electroless Nickel Coating on Magnesium-Based Composites Reinforced with MWCNT 表面活性剂纳米添加剂对MWCNT增强镁基复合材料化学镀镍表面特性的影响

IF 2.6

Advances in Tribology Pub Date : 2013-12-29 DOI: 10.1155/2013/315965

R. Dhinakaran, R. Elansezhian, Arunachalam Arumugam Lalitha

{"title":"Effect of Nanoadditives with Surfactant on the Surface Characteristics of Electroless Nickel Coating on Magnesium-Based Composites Reinforced with MWCNT","authors":"R. Dhinakaran, R. Elansezhian, Arunachalam Arumugam Lalitha","doi":"10.1155/2013/315965","DOIUrl":"https://doi.org/10.1155/2013/315965","url":null,"abstract":"An experimental investigation has been carried out on optimizing process parameters of electroless nickel-phosphorous coatings on magnesium composite reinforced with carbon nanotube. A comprehensive experimental study of electroless Ni–P coatings on magnesium composite reinforced with multiwalled carbon nanotube under specific coating conditions was performed. The electroless coating bath consists of nickel sulphate (26 g/L), sodium hypo-phosphite (30 g/L) as reducing agent, sodium acetate (16 g/L) as stabilizer, and ammonium hydrogen difluoride (8 g/L) as the complexing agent. The surfactant SLS was added in the solution for better wetting and spreading of coating on substrate. The stabilizer thiourea (1 ppm) was added in the bath to prevent decomposition of bath. Different nanoadditives such as ZnO, Al2O3, SiO with various concentrations were used in the bath and their influence on coating process characteristics were studied The nano additives such as ZnO, Al2O3, SiO were added at concentrations of 0.1%, 0.5%, 1%, and 2% in the EN bath. The output parameters such as surface roughness, microhardness, specific wear rate, and surface morphology were measured. Surface morphology was studied using scanning electron microscope. The results showed that the proposed method resulted in significant improvement on the quality of the coatings produced.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":"2013 1","pages":"1-10"},"PeriodicalIF":2.6,"publicationDate":"2013-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/315965","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64405308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Effect of Temperature and Electric Field on the Damping and Stiffness Characteristics of ER Fluid Short Squeeze Film Dampers 温度和电场对电流变流体短挤压膜阻尼器阻尼和刚度特性的影响

IF 2.6

Advances in Tribology Pub Date : 2013-11-21 DOI: 10.1155/2013/526428

H. Jagadish, L. Ravikumar

{"title":"Effect of Temperature and Electric Field on the Damping and Stiffness Characteristics of ER Fluid Short Squeeze Film Dampers","authors":"H. Jagadish, L. Ravikumar","doi":"10.1155/2013/526428","DOIUrl":"https://doi.org/10.1155/2013/526428","url":null,"abstract":"Squeeze film dampers are novel rotor dynamic devices used to alleviate small amplitude, large force vibrations and are used in conjunction with antifriction bearings in aircraft jet engine bearings to provide external damping as these possess very little inherent damping. Electrorheological (ER) fluids are controllable fluids in which the rheological properties of the fluid, particularly viscosity, can be controlled in accordance with the requirements of the rotor dynamic system by controlling the intensity of the applied electric field and this property can be utilized in squeeze film dampers, to provide variable stiffness and damping at a particular excitation frequency. The paper investigates the effect of temperature and electric field on the apparent viscosity and dynamic (stiffness and damping characteristics) of ER fluid (suspension of diatomite in transformer oil) using the available literature. These characteristics increase with the field as the viscosity increases with the field. However, these characteristics decrease with increase in temperature and shear strain rate as the viscosity of the fluid decreases with temperature and shear strain rate. The temperature is an important parameter as the aircraft jet engine rotors are located in a zone of high temperature gradients and the damper fluid is susceptible to large variations in temperature.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":"2013 1","pages":"1-10"},"PeriodicalIF":2.6,"publicationDate":"2013-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/526428","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64140172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

MOORA-Based Tribological Studies on Red Mud Reinforced Aluminum Metal Matrix Composites 基于moora的赤泥增强铝金属基复合材料摩擦学研究

IF 2.6

Advances in Tribology Pub Date : 2013-11-14 DOI: 10.1155/2013/213914

S. Rajesh, S. Rajakarunakaran, R. Suthakarapandian, Pitchipoo Pandian

{"title":"MOORA-Based Tribological Studies on Red Mud Reinforced Aluminum Metal Matrix Composites","authors":"S. Rajesh, S. Rajakarunakaran, R. Suthakarapandian, Pitchipoo Pandian","doi":"10.1155/2013/213914","DOIUrl":"https://doi.org/10.1155/2013/213914","url":null,"abstract":"This paper presents the findings of an experimental investigation on the effects of applied load, sliding velocity, wt.% of reinforcement and hardness of the counterface material in dry sliding wear studies performed on red mud-based aluminum metal matrix composites (MMC). The specific wear rate and the coefficient of friction are considered as the output quality characteristics. Taguchi-based L9 orthogonal array has been used to accomplish the objective of the experimental study. Analysis of variance (ANOVA) is employed to find the optimal setting and the effect of each parameter on the output performance characteristics. It has been observed that optimal factor setting for each output performance is different. In order to minimize the two responses simultaneously, multiobjective optimization based on ratio analysis (MOORA) is adopted. MOORA revealed that the optimal combination of the dry sliding wear parameters for the multiperformance characteristics of the red mud based aluminium is the set normal load at 20 N, sliding velocity 3 m/s, % of reinforcement 20%, and counterface hardness of the material 58 HRC.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":"2013 1","pages":"1-8"},"PeriodicalIF":2.6,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/213914","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64392820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 22

Optimization of Tribological Properties of Nonasbestos Brake Pad Material by Using Steel Wool 用钢丝绒优化无石棉刹车片材料的摩擦学性能

IF 2.6

Advances in Tribology Pub Date : 2013-10-23 DOI: 10.1155/2013/165859

R. Vijay, M. J. Janesh, M. Saibalaji, V. Thiyagarajan

{"title":"Optimization of Tribological Properties of Nonasbestos Brake Pad Material by Using Steel Wool","authors":"R. Vijay, M. J. Janesh, M. Saibalaji, V. Thiyagarajan","doi":"10.1155/2013/165859","DOIUrl":"https://doi.org/10.1155/2013/165859","url":null,"abstract":"The gradual phasing out of typical brake pad material led to the spark of extensive research in development of alternatives. Henceforth we have performed a tribological study to improve the performance characteristics of the friction product (brake pad) by using steel wool, a metallic material which has an excellent structural reinforcement property and high thermal stability which are indeed required to improve the performance of the brake pad. Under the study, five frictional composites were developed and optimized using the same ingredients in an appropriate proportion except steel wool (0%, 4%, 8%, 12%, and 16%) which is compensated by synthetic barite, and the synthesized compositions are designated as Na01 to Na05. The developed pads are tested for tribological behaviour under conventional environment in a standard pin on disc tribometer. It is observed that increase in steel wool concentration resulted in high coefficient of friction and low wear rate of pad as resulted in Na05 composition. SEM analysis of the wear surface has proved to be useful in understanding the wear behaviour of the composites.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":"13 1","pages":"1-9"},"PeriodicalIF":2.6,"publicationDate":"2013-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/165859","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64383315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 26

Effect of Viscosity Variation on the Micropolar Fluid Squeeze Film Lubrication of a Short Journal Bearing 粘度变化对短轴颈轴承微极流体挤压膜润滑的影响

IF 2.6

Advances in Tribology Pub Date : 2013-10-03 DOI: 10.1155/2013/743987

N. Naduvinamani, A. K. Kadadi

引用次数: 10

Role of Silicon Dioxide Filler on Mechanical and Dry Sliding Wear Behaviour of Glass-Epoxy Composites 二氧化硅填料对玻璃-环氧复合材料力学和干滑动磨损性能的影响

IF 2.6

Advances in Tribology Pub Date : 2013-09-25 DOI: 10.1155/2013/324952

N. Anjum, S. A. Prasad, B. Suresha

引用次数: 31

Frictional Effects on Gear Tooth Contact Analysis 摩擦对齿轮齿接触的影响分析

IF 2.6

Advances in Tribology Pub Date : 2013-07-30 DOI: 10.1155/2013/181048

Zheng Li, K. Mao

{"title":"Frictional Effects on Gear Tooth Contact Analysis","authors":"Zheng Li, K. Mao","doi":"10.1155/2013/181048","DOIUrl":"https://doi.org/10.1155/2013/181048","url":null,"abstract":"The present paper concentrates on the investigations regarding the situations of frictional shear stress of gear teeth and the relevant frictional effects on bending stresses and transmission error in gear meshing. Sliding friction is one of the major reasons causing gear failure and vibration; the adequate consideration of frictional effects is essential for understanding gear contact behavior accurately. An analysis of tooth frictional effect on gear performance in spur gear is presented using finite element method. Nonlinear finite element model for gear tooth contact with rolling/sliding is then developed. The contact zones for multiple tooth pairs are identified and the associated integration situation is derived. The illustrated bending stress and transmission error results with static and dynamic boundary conditions indicate the significant effects due to the sliding friction between the surfaces of contacted gear teeth, and the friction effect can not be ignored. To understand the particular static and dynamic frictional effects on gear tooth contact analysis, some significant phenomena of gained results will also be discussed. The potentially significant contribution of tooth frictional shear stress is presented, particularly in the case of gear tooth contact analysis with both static and dynamic boundary conditions.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":"2013 1","pages":"1-8"},"PeriodicalIF":2.6,"publicationDate":"2013-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/181048","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64387552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Contact Mechanics of Rough Spheres: Crossover from Fractal to Hertzian Behavior 粗糙球体的接触力学:从分形到赫兹行为的交叉

IF 2.6

Advances in Tribology Pub Date : 2013-07-18 DOI: 10.1155/2013/974178

R. Pohrt, V. Popov

引用次数: 40