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0.20.1950.190.1850.180.1750.170.165Figure 7. The specific wear rate of EPDM 55Å (1), 70Å(2) and 80Å (3).The curves reveal that the specific wear rate issmallest forthe softer rubber, that is, EPDM 55Å.The specific gravity is also smaller in casee ofEPDM 55Å, which depends on the hardness andhardness again dependson the carbon black (CB)content of the rubber. However, in i case of flowcharacteristics of EPDMit is revealed that EPDM70Å is better than others. The selection of materialdepends onthe actual requirements in specificapplication area.CONCLUSION1 2This experimental work is devotedd for flow as wellas wears characterizationof EPDM rubber of differenthardness in different experimental conditions. Thee testconditions were very difficult to be harmonizedd butmuch care was taken toobtain results as accurate aspossible accepting the noise factorss included inn theexperimentations. The results obtained are tabulated,graphed andanalyzed accordingly in the previoussection. Future work is proposed with different otherlubricants as well as inclusion of complex operatingenvironment, like extreme temperature and pressureconditions etc. It is also proposed toconduct frettingwear test as well as measurement of abrasion lossusing pin-on-plate (POP)type of tribometer.ACKNOWLEDGEMENTThe present work has been carried out inn theframe workof Mechanical Engineering Department,Production Engineeringg Departmentt and Metallurgyand Material Science Engineering Department ofthe Jadavpur University, Kolkata, India. The authoris extremelythankful tothe facultyand laboratorystaff members, the students who at any point of timewere involved in this work at any ways. The authoris also thankful to NEL(Rubber division), Kolkata,for their very kind support in providing the workspecimen for the tests, purely for academic interest.3Series1REFERENCE[1] Felhos D., Karger-KocsisKs J.: “Tribological Testingof Peroxidee Cured EPDM Rubbers With DifferentCarbon BlackContentsUnder Dry SlidingConditions Against Steel”, Tribology InternationalVol. 41, pp. 404-415, 2008.[2] Kalpakjian S., Schmid Steven R.: “ManufacturingProcesses for Engineering Materials” ”, 4 th. Edition,Pearson Education, 2009. .[3] Dieter George E.: “MechanicalMetallurgy”,McGraw-Hill, SI Metric Edition, 1988.[4] Mukhopadhyay Abhijit: “Flow Behavior of EPDMRubber of f Different Hardness Values UnderAxysymetricc Compressive Load in Dry WorkingCondition”, Proceedingss of the 12 th. internationalconference on Tribology“SERBIATRIB’11”,Kragujevac, , Serbia, 11- 13.05.2011, pp. 56-64.[5] Sohail Khan M.,Franke R. et.al.: “Friction andWear Behavior of Electron Beam Modified PTFEFilled EPDM Compounds”, Wear, Vol. 266, pp.175-183, 2009.[6] Mukhopadhyay Abhijit: “Effect of Some Lubricantson the Flow Characteristics of ‘EPDM’ Rubber UnderCompressivee Load”, Acceptedpaper in theinternational conference on Tribology, ‘BALTTRIB-2011’, 17-199 Nov., 2011, Kaunas, Lithuania.[7] Mukhopadhyay Abhijit: “Maintenance Tribology:A New Paradigm in Maintenance”,SURVEY (amanagement journal of IISWBM, Kolkata), Vol. 50No. 3&4, pp.1-7, 2010.[8] Lenard J.G. : “Tribology in Metal Rolling”, Annalsof CIRP, Vol. 49, No. 2, pp. 567-590, 2000.[9] Sofuoglu H. ., Rasty J.: “Flow Behaviorr of PlasticineUsed in Physical P Modeling of Metal FormingProcesses”, Tribology International, Vol. 33, pp.523-529, 2000.[10] El. Tayeb N.S.M., N Nasirr Md.R.: “Effect of SoftCarbon Black on Tribology of Deprotenised andpolyisoprene Rubers”, Wear, Vol. 262, pp. 350-361, 2007.[11] Karger-Kocsis J., Mousaa A., et. al.: “Dry Frictionand Sliding Wear of EPDM Rubbers Against Steelas a Function of Carbon Black Content”, Wear,Vol. 264, pp. 359-367, 2008.[12] MukhopadhyayAbhijit:“Reviewon theTribological State Test in Some Metal FormingOperation inn Industry”, Mechanica Confab, Vol. 1,No. 3, pp. 29-39, 2012.[13] Logothetis N.: N “Managing for Total Quality: FromDeming to Taguchi andd SPC”, Prentice Hall ofIndia, 2000.[14] Pandey K.N., Setua D.K., Mathur G.N., “Materialbehavior: Fracture F topography of rubber surfaces:an SEM study”, Polymerr Testing, Vol. 22, No. 3,pp. 353-359, 2003.[15] SEM/EDAXXanalysis,http://www. ML06\1\ANALYSISWITHSEM_EDS.PMD060317.[16] Ginic-Markovic M., Roy Choudhury N.,et.al., ,“Weatherability of coatedd EPDM rubber compoundby controlledUV irradiation” ”, Polymer37813 th International Conference C onn Tribology – Serbiatrib’13
Degradation & Stability, Vol. 69, No. 2, pp. 157-168, 2000.[17] Ludema Kenneth C.: “Friction, Wear, Lubrication:A text book in tribology”, CRC press, U.S., 1996.[18] Handbook of ‘Two Body Abrasion Tester: TR-605’, Ducom Instruments, http://www.ducom.com.APPENDIX – ITable 2. Flow characteristics data of EPDM.EPDMLubricantofdifferentDry Fixed Contact Talc Water Greasehardness A B C A B C A B C A B C A B C55Å 2.71 2.08 2.16 1.77 1.34 9.90 2.71 2.04 2.05 1.99 1.52 1.52 1.66 1.34 1.2560Å 3.35 2.41 2.53 2.65 2.01 6.78 2.64 2.05 2.04 2.72 2.05 2.05 2.36 1.75 1.7970Å 4.05 3.15 3.47 3.18 2.40 2.40 3.95 3.17 3.03 3.09 2.34 2.34 2.52 2.62 1.9180Å 9.03 5.95 6.75 8.36 6.38 2.01 7.88 6.29 5.24 6.78 5.05 4.83 6.94 3.91 5.2485Å 16.57 10.00 12.53 13.03 9.90 1.34 16.32 12.29 12.29 11.76 9.33 8.87 - - -[A: Load (KN) at 50% deflection; B: True stress (N/mm 2 ) at 50% deflection; C: True stress (N/mm 2 at a true strain of 0.7]Table 3. Factor-level combinations of the experiments as per Taguchi’s L 9 - orthogonal array and the abrasion loss data.TrialNo.Hardness(Shore;Å)AbrasivegradeLoad onjob (N)CyclesSpecific wear rate(mm 3 /Nm)1 st replication 2 nd replication 3 rd replication1 55 Very Fine 5 2000.1149 0.1038 0.10942 55 Fine 10 400 0.2641 0.1692 0.29523 55 Medium 15 600 0.2279 0.1507 0.17414 70 Very Fine 10 600 0.1930 0.1932 0.19215 70 Fine 15 200 0.1991 0.2234 0.19306 70 Medium 5 400 0.1640 0.1963 0.13537 80 Very Fine 15 400 0.1775 0.2142 0.19448 80 Fine 5 600 0.1782 0.2685 0.18489 80 Medium 10 200 0.1551 0.2098 0.195113 th International Conference on Tribology – Serbiatrib’13 379
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SerbianTribologySocietyFacultyofEng
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Serbian Tribology SocietyUniversity
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Supported byMinistry of Education,
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PrefaceThe International Conference
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ContentsPlenary Lectures1. THE GREE
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27. WEAR CHARACTERISTICS OF HYBRID
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Tribometry57. PRELIMINARY STUDY ON
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Plenary Lectures13 th International
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Serbian TribologySocietySERBIATRIB
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Figure 4. Diagram of the height and
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Realization of the approach is base
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edge without chamfer and smaller ra
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Figure 7. Accumulated tool life in
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Figure 13. Calculated and measured
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Friction deformation of the bronze
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engine cylinders of 2-cylinder-twot
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Table 1: Chemical composition of sa
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Table 4: Comparative wear-resistanc
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- measuring of coating thickness h
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Figure 5. Functional scheme of the
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Table 2. Test results for massive w
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knowledge transfer in the field ofm
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Table 1. Parameters of the electroc
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Figure 6. Wear resistance by linear
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coatings and observed their good we
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c)a)Figure 2: SEM images and micros
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Room temperature 300°CNi/µSiCNiNi
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COF [-] COF [-]Fig.9: COF graphs at
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about 260 nm is related to isolated
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contact’s conformity [18] they ob
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In order to calculate the metallic
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microscopic inspection of the Rp3 s
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otating plate. The shaft passes thr
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similar trends of variation are obs
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smooth, gear fiber-mild steel rough
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[2] Tabor, D.: “Friction and wear
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(10, 50 and 100 N) against surface
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[9] B.R. Gligorijevic, A. Vencl, B.
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dielectric properties, high resista
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parameter, Sv, was slightly influen
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dependence of roughness height and
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Polyethylenes with a molecular weig
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[9] K.S. Kanaga Karuppiah, A.L. Bru
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MgCO3•CaCO3 (13% Mg), and carnall
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fully compatible with MRI/MSCT imag
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5. CONCLUSIONThe magnesium alloys a
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Zinc dialkyldithiophosphate (ZDDP)
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C- Lower deposits with NPNA on comb
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films. Carraro et al. [10] examined
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PlateCount No.Critical Load ( N)120
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solid melt of ZA27 alloy using mech
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SiC particles are uniformly distrib
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in number of micro-cracks and clust
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PBT has the average values of the f
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mechanical pressure and thermal loa
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3. EXPERIMENTAL RESULTSTaking into
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[12] L. Blunt De, X. Jiang: Advance
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2. EXPERIMENTALTESTING2.1 MaterialT
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figure 3a it could be seen that the
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and lubrication is done so that the
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5. CONCLUSIONFigure 11. The accumul
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esistance was found for composite c
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onze, which is embedded within the
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The test contact pair meets the req
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complete. The SEM analysis maycontr
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tg( ) tg 100, [%] (2)tgwhere are:
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corresponding to the maximum value
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electrostatics [17]. Due to the fle
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250nm size have been observed, acco
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ETH Zurich, Switzerland, where all
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comparison with the synthetic reinf
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3. RESULTS AND DISCUSSION3.1 Micros
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(a)(b)Figure 4. Showing (a) variati
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composites. But the composite compo
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coated and uncoated region after ad
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has been measured between the top s
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Fig. 9 shows the wear track obtaine
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Mica samples preparationFor the ads
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According to the AFM results in fig
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[21] B. G. Sharma et al.: Character
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chemical vapor deposition method wi
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analysis (a) and an approximate che
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Table 3. Friction coefficients of s
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A.K.Oleynik, V.M.Matsevity, ea.]. /
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Most of the friction units of produ
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In order to provide both high parts
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Fig. 3. The comparison the criterio
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Table 3. Experimental and calculate
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For developing the numerical model
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,eccentricities and hydrodynamic pr
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hydrodynamic regime. However, for b
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to obtain the temperature distribut
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force (pressure) between two contac
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5E-06The total displacement [m]4.5E
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[11]. Figure 5 shows s the influenc
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efficiency of use, product quality,
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38GSA. The chemical composition, de
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niobium. It should be noted that fo
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Figure 1. Friction force on side su
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exploitation this changing is signi
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2. EFFICIENCY OF CYCLO DRIVEEfficie
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Figure 6. Dependence of cyclo drive
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common for their ability to be inst
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FNF (11)R sin cos11 21 22FNF
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Normal force [N]4000350030002500200
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analytical tests. The analytical te
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Table 4. Results of zero samples of
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noticeable, and by the end of explo
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4. PLASTIC BEARING APPLICATIONSRega
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For Elastohydrodynamic film thickne
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The results concluded for different
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For Thrust Force of 40KNKrytox 215
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Krytox 215 (µ = 0.03204 Pa.s)Figur
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- Reliable exploitation tools, prim
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In addition, as a result of cyclic
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AcknowledgementThe part of this res
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Thepressure angle can be calculated
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mechanism these parameters are fina
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causes big changes of their propert
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Table 2. Impact toughness of some t
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Figure 1. Appearance of fractured f
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implementation of these new manugac
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additional energy is dissipated due
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The adopted geometry parameters are
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4. CONCLUSIONTools of virtual produ
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Figure 2. Structure of the machinin
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3. ANALYSIS OF RESULTSThe results o
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Figure 15. Surface roughness regard
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From the analysis of the diagram it
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comparison from economic, energy co
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Advantages and disadvantages of tra
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The information provided by footwea
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Force (N)5,554,543,532,521,510,50Ex
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additives, that had been, until rec
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Figure 1. Test results for samples
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Table 7. Test results of oil sample
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Input parameters- Current intensity
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edge formed into a thin line. At th
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Lower values of current are not res
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Table 1. Chemical composition of si
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flowable at high temperatures and v
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holes (pits) emerge in the shape of
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Page 427 and 428: 5. ZAKLJUČCIStruktura tiksolivene
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Page 433 and 434: LITERATURA[1] Зинченко В.
Page 435 and 436: Slika 1. Rotorni bager - glodar VII
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Page 439 and 440: njihovih kotrljanih elemenata. Mere
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posledica različite raspodele mikr
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ZrO 2 Y 2 O 3 je takođe zbog oksid
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3.2 Pneumatska osetljivostOblast pr
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p mg (δ), koji je zbog malih struj
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PNEUMATIC PROBE HEAD SELECTION FOR
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1. Podsistem kopanja2. Podsistem pr
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Slika 3. Kriva habanjaNa tom dijagr
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Mjereni su parametri habanja i pril
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preše prevladavaju kombinirani uvj
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a) b)Slika 5. Karakteristična mikr
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varijantnih materijala u dostavnom
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Jovanović D. 414, 446KKaleicheva J
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CIP - Каталогизација
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