Wear test of brake friction material on pin on-disc
Submitted by registration no.Sribalan.s 091042880Sumit kumar 091043016Sunil sharma 091043017Suraj karn prakash 091043018Project guide: Mr. I Ashok KumarAsst. professor in dept of manufacturing engg.Annamalai university
materials made from two or more constituent materials withsignificantly different physical or chemical properties , thatwhen combined, produce a material with characteristicsdifferent from the individual components.Composite matrices are widely categorised under 3 categories1. Metal matrix composite2. polymer matrix composites3. Ceramic matrix composites
It is composite material with at least two constituent parts,one being a metal. The other material may be a differentmetal or another material, such as a ceramic or organiccompound.This possess high strength, light weight and high stiffness tothe composite materials.PROCESS FOR MANUFACTURE1. Liquid state process2. Solid state process
increase in the longitudinal Youngs modulus as a function offiber volume fraction. The larger the fiber diameter for a given fiber volume fraction,the larger the amount of tough, metallic matrix in the interfiberregion that can undergo plastic deformation and thus contributeto the toughness. Good thermal as well as mechanical fatigue propertiesAPPLICATIONS:a. Used in making carbide drillsb. used in defence weapons like tank armoursc. used in making jet landing gear etc.
A polymer is defined as a long chain molecule containing oneor more repeating units of atoms joined together by strongcovalent bonds. A polymeric materials is a collection of alarge number of polymer molecules of similar chemicalstructure. IN the solid state, these molecules are frozen inspace either in a random fashion or in a mixture of randomand orderly fashion.Methods Of Manufacture:High Pressure Compression Moulding.Pressure Bag Moulding.Injection Molding.Filament Winding.Resin Transfer Molding
High strength at low weight Ability to tailor properties to meet wide-rangingperformance specifications Good impact, compression, fatigue and electrical properties Cost-effective manufacturing processes Excellent chemical and corrosion resistanceAPPLICATIONS:1. housing for electrical tools,2. automotive applications,3. plastic drawers,4. metal inserts, Etc..
ConclusionDevelopment of graphs for both the testsWear test on pin-on-discCompression test on hot pressing machineSpecimen preparationMaterial selection as polymer composite material
Wear is nothing but removal of material due to anyfrictional force. The wear test was conducted on pin-on-disc machinepresent in the tribology lab. The main aim of performing this test was to determinethe wear rate and coefficient of friction of the earlymentioned composite specimen. 4 samples were taken in order to determine the results In the three samples the wear rate increases with theincrease in load on the stainless steel disc. But when the load on the 4th sample was high then dueto removal of more metal and action of them as alubricant reduces the friction and wear rate
The wear rate gradually increases for this specimen of compositematerial while the load is increased. Although the wear rate willdecrease after a certain point of applying load due to the action ofremoved particles as lubricant. Using fibre flax materials in place of asbestos material forreinforcement was a better option. As, the use of asbestos will lead tothe emission of toxic gases. These toxic gases are very hazardous innature and causes harmful effect on human body such as cancer. While the use of fibre flax material will be eco friendly as thesematerials are naturally extracted. The specimen have good wear resistance capacity but no tensilestrength due to the use of less amount of reinforcement fiber in thespecimen composite