logging in or signing up overview of tribology shaifmech Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 4486 Category: Science & Tech.. License: All Rights Reserved Like it (4) Dislike it (0) Added: November 22, 2008 This Presentation is Public Favorites: 1 Presentation Description tribology is a science of frictiob and wear uploaded by shaif Comments Posting comment... By: ayun7758 (31 month(s) ago) really good Saving..... Post Reply Close Saving..... Edit Comment Close By: sankeerthphani (33 month(s) ago) its tooooooooo help fullthanque Saving..... Post Reply Close Saving..... Edit Comment Close By: ravi_kumar_040 (35 month(s) ago) good job guys... Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Tribology : Tribology Science and engineering of interactive surface in relative motion. Presented by: Mukut ch. Medhi Somnath Dey Dhiru Kamal Deka Md Shaifuddin Dept. of Mechanical Engineering Tezpur University Tribology : Tribology Tribology (origin in 1960’s) Tribology= tribos+logos Rub Principle or logic Brown’s first law of applied Tribology : Brown’s first law of applied Tribology IF IT'S RUNNING IT'S WEARING !!! IF IT'S NOT RUNNING IT'S PROBABLY WORN! Tribology : Tribology Two bodies in relative motion . Results Friction Static friction Frictional heat, resistance against movement (friction force), loss of energy. Wear Material loss degradation of surface, decreasing functionality. Examples of Tribology : Examples of Tribology Industrial Tribology Machine parts/engines Lubrication Oil Grease Friction and wear Decreasing performance Wear Definition : Wear Definition Most wear is an combination of several mechanisms Wear Mechanisms : Wear Mechanisms Adhesive Low contact pressures Augmented asperities Abrasive High contact pressures Wear tracks Friction : Friction Origin of friction Deforming of the surface : deformation energy Adhesion of two bodies: non-linear adhesion hysteresis Atomic adhesion model Van Der Waals Capillary forces Electron interactions Dynamic friction –static friction Lubrication : Lubrication Lubrication is the process, or technique employed to reduce wear of one or both surfaces in close proximity, and moving relative to each another, by interposing a substance called lubricant. Types of lubricants : Types of lubricants Liquid lubricants Lubrication with oil Cooling and removal of debris Protection against metal-metal contact Hydrodynamic lubrication Lowering friction=lowering energy input into the surface. Lubrication with grease Oil in wax Low cooling effect/no hydrodynamic lubrication Alternative when oil lubrication is impossible Types of lubricants : Types of lubricants Solid lubricants and self-lubricating materials Plastics, PTFE, MoS2, , Graphite Important properties of lubricants : Important properties of lubricants Wide range of viscosity Little change in viscosity with temperature Chemical stability Sufficient specific heat to carry away frictional heat Low cost Easily available Bearings : Bearings It is mechanical element that permits relative motion between two parts such as shaft and housing. Ball Bearing Classification : Classification Depending on type of friction Sliding contact bearing Rolling contact bearing Depending on type of force Radial Thrust Rolling and sliding contact bearing : Rolling and sliding contact bearing Rolling contact bearing and sliding contact bearing Radial and thrust bearing : Radial and thrust bearing Rolling contact bearing : Rolling contact bearing Deep groove ball bearing Cylindrical roller bearing Angular contact bearing Self aligning bearing Taper roller bearing Thrust roller bearing Rolling bearing : Rolling bearing Different types of bearings : Propeller bearing Water lubricated polymer bearing Water lubricated bearing Different types of bearings Application : Application Industrial Process Tribology in biological science Tribology in engines Industrial process : Industrial process Rolling-Sheet metal Wire drawing Tube expansion Deep drawing Rolling-Sheet metal : Rolling-Sheet metal Rolling-Sheet metal : Rolling-Sheet metal Wire drawing : Wire drawing Tube expansion : Tube expansion Deep drawing : Deep drawing Tribology in biological science : Tribology in biological science Tribology in engines : Tribology in engines Lubrication of engine Lubrication of engine : Lubrication of engine Valve train Sump1 Sump2 Piston assembly Crank shaft Degradation of lubricant : Degradation of lubricant Piston Assembly Sump Sump Piston Piston Assembly : Piston Assembly Extraction of Oil from Top Piston Ring : Extraction of Oil from Top Piston Ring Solutions to tribological problem : Solutions to tribological problem Trial and error method Material selection Parameter selection Lubricant Simulation method Selection of simulation Material selection Parameter selection Field data Conclusions : Conclusions Tribology is a multi-disciplinary science that is based onto experience and common sense. Boiler feed pumps: 49% of the failures causing outages were because of tribological components. Friction, wear and failure of tribological components are costing industry billions of dollars Reference : Reference www.falexint.com www.wikipedia.org lqme.sjtu.edu.cn www.TRIBOLOGY-ABC.com Design of machine elements- V.B BHANDARI Fundamentals of Tribology-Basu, Sengupta, Ahuja Thank You : Thank You Question’s ?.... You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
overview of tribology shaifmech Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 4486 Category: Science & Tech.. License: All Rights Reserved Like it (4) Dislike it (0) Added: November 22, 2008 This Presentation is Public Favorites: 1 Presentation Description tribology is a science of frictiob and wear uploaded by shaif Comments Posting comment... By: ayun7758 (31 month(s) ago) really good Saving..... Post Reply Close Saving..... Edit Comment Close By: sankeerthphani (33 month(s) ago) its tooooooooo help fullthanque Saving..... Post Reply Close Saving..... Edit Comment Close By: ravi_kumar_040 (35 month(s) ago) good job guys... Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Tribology : Tribology Science and engineering of interactive surface in relative motion. Presented by: Mukut ch. Medhi Somnath Dey Dhiru Kamal Deka Md Shaifuddin Dept. of Mechanical Engineering Tezpur University Tribology : Tribology Tribology (origin in 1960’s) Tribology= tribos+logos Rub Principle or logic Brown’s first law of applied Tribology : Brown’s first law of applied Tribology IF IT'S RUNNING IT'S WEARING !!! IF IT'S NOT RUNNING IT'S PROBABLY WORN! Tribology : Tribology Two bodies in relative motion . Results Friction Static friction Frictional heat, resistance against movement (friction force), loss of energy. Wear Material loss degradation of surface, decreasing functionality. Examples of Tribology : Examples of Tribology Industrial Tribology Machine parts/engines Lubrication Oil Grease Friction and wear Decreasing performance Wear Definition : Wear Definition Most wear is an combination of several mechanisms Wear Mechanisms : Wear Mechanisms Adhesive Low contact pressures Augmented asperities Abrasive High contact pressures Wear tracks Friction : Friction Origin of friction Deforming of the surface : deformation energy Adhesion of two bodies: non-linear adhesion hysteresis Atomic adhesion model Van Der Waals Capillary forces Electron interactions Dynamic friction –static friction Lubrication : Lubrication Lubrication is the process, or technique employed to reduce wear of one or both surfaces in close proximity, and moving relative to each another, by interposing a substance called lubricant. Types of lubricants : Types of lubricants Liquid lubricants Lubrication with oil Cooling and removal of debris Protection against metal-metal contact Hydrodynamic lubrication Lowering friction=lowering energy input into the surface. Lubrication with grease Oil in wax Low cooling effect/no hydrodynamic lubrication Alternative when oil lubrication is impossible Types of lubricants : Types of lubricants Solid lubricants and self-lubricating materials Plastics, PTFE, MoS2, , Graphite Important properties of lubricants : Important properties of lubricants Wide range of viscosity Little change in viscosity with temperature Chemical stability Sufficient specific heat to carry away frictional heat Low cost Easily available Bearings : Bearings It is mechanical element that permits relative motion between two parts such as shaft and housing. Ball Bearing Classification : Classification Depending on type of friction Sliding contact bearing Rolling contact bearing Depending on type of force Radial Thrust Rolling and sliding contact bearing : Rolling and sliding contact bearing Rolling contact bearing and sliding contact bearing Radial and thrust bearing : Radial and thrust bearing Rolling contact bearing : Rolling contact bearing Deep groove ball bearing Cylindrical roller bearing Angular contact bearing Self aligning bearing Taper roller bearing Thrust roller bearing Rolling bearing : Rolling bearing Different types of bearings : Propeller bearing Water lubricated polymer bearing Water lubricated bearing Different types of bearings Application : Application Industrial Process Tribology in biological science Tribology in engines Industrial process : Industrial process Rolling-Sheet metal Wire drawing Tube expansion Deep drawing Rolling-Sheet metal : Rolling-Sheet metal Rolling-Sheet metal : Rolling-Sheet metal Wire drawing : Wire drawing Tube expansion : Tube expansion Deep drawing : Deep drawing Tribology in biological science : Tribology in biological science Tribology in engines : Tribology in engines Lubrication of engine Lubrication of engine : Lubrication of engine Valve train Sump1 Sump2 Piston assembly Crank shaft Degradation of lubricant : Degradation of lubricant Piston Assembly Sump Sump Piston Piston Assembly : Piston Assembly Extraction of Oil from Top Piston Ring : Extraction of Oil from Top Piston Ring Solutions to tribological problem : Solutions to tribological problem Trial and error method Material selection Parameter selection Lubricant Simulation method Selection of simulation Material selection Parameter selection Field data Conclusions : Conclusions Tribology is a multi-disciplinary science that is based onto experience and common sense. Boiler feed pumps: 49% of the failures causing outages were because of tribological components. Friction, wear and failure of tribological components are costing industry billions of dollars Reference : Reference www.falexint.com www.wikipedia.org lqme.sjtu.edu.cn www.TRIBOLOGY-ABC.com Design of machine elements- V.B BHANDARI Fundamentals of Tribology-Basu, Sengupta, Ahuja Thank You : Thank You Question’s ?....