Proceedings of SerbiaTrib '13

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Wear rate, mm 3 /m3.503.002.502.001.501.000.500.002.881.240.211.880.7510 N50 N100 N1.670.680.10 0.09670 690 710 730 750 770 790Hardness HV5Figure 6. Wear rate vs. hardness of tested materials fordifferent normal loadsFor all applied loads, the relation betweenhardness and wear rate is non-linear. It is morecurved for higher loads (Fig. 6). This is connectedwith the coatings structure and exhibited wearmechanism. Coatings 4541 and 5006 exhibit mainlyploughing abrasive wear (Fig. 7a), while coating7888 T dominant type of abrasive wear is fracture(cracking) abrasive wear (Fig. 7b).Figure 7. The wear scar appearance (SEM) of: (a) 4541and (b) 7888 T hardfaced coating; 50 N normal load;back-scattered electron images4. CONCLUSIONScratch test offers relatively easy and quickcomparison of different materials on abrasive wear.Structure of tested coatings showed influence onthe dominant type of abrasive wear, which togetherwith coatings hardness determined coatingsabrasive wear resistance.Coatings with lower hardness showed lowerabrasive wear resistance, but the dependence(hardness vs. wear rate) was non-linear.In the case of iron-based coatings, dominanttype of abrasive wear was ploughing and in the caseof WC-based coatings, it was fracture (cracking)abrasive wear.ACKNOWLEDGEMENTThis work has been performed as a part ofactivities within the projects TR 34028, TR 35021and TR 35034. These projects are supported by theRepublic of Serbia, Ministry of Education, Scienceand Technological Development, whose financialhelp is gratefully acknowledged.REFERENCES[1] A. Rac: Osnovi tribologije, Mašinski fakultetUniverziteta u Beogradu, Beograd, 1991.[2] R.G. Bayer: Fundamentals of wear failures, in: ASMHandbook Volume 11, Failure Analysis andPrevention, ASM International, Metals Park, pp.901-905, 2002.[3] V. Lazić, M. Jovanović, D. Milosavljević, M.Mutavdžić, R. Čukić: Choosing of the most suitabletechnology of hard facing of mixer blades used inasphalt bases, Tribology in Industry, Vol. 30, No. 1-2, pp. 3-10, 2008.[4] V. Lazić, M. Mutavdžić, D. Milosavljević, S.Aleksandrović, B. Nedeljković, P. Marinković, R.Čukić: Selection of the most appropriate technologyof reparatory hard facing of working parts onuniversal construction machinery, Tribology inIndustry, Vol. 33, No. 1, pp. 18-27, 2011.[5] J.R. Davis, Hardfacing, weld cladding, anddissimilar metal joining, in: ASM Handbook Volume6, Welding, Brazing, and Soldering, ASMInternational, Metals Park, pp. 789-829, 1993.[6] EN 14700: Welding consumables – Weldingconsumables for hard-facing, European Committeefor Standardization, Brussels, 2005.[7] M. Šolar, M. Bregant: Dodatni materijali i njihovaupotreba kod reparaturnog navarivanja,Zavarivanje i zavarene konstrukcije, Vol. 51, No. 2,pp. 71-76, 2006.[8] A. Vencl, N. Manić, V. Popovic, M. Mrdak:Possibility of the abrasive wear resistancedetermination with scratch tester, Tribology Letters,Vol. 37, No. 3, pp. 591-604, 2010.78 13 th International Conference on Tribology – Serbiatrib’13
[9] B.R. Gligorijevic, A. Vencl, B.T. Katavic:Characterization and comparison of the carbidesmorphologies in the near surface region of thesingle- and double layer iron-based hardfacedcoatings, Scientific Bulletin of the "Politehnica"University of Timișoara, Transactions onMechanics, Vol. 57 (71), Special Issue S1, pp. 15-20, 2012.[10] OECD, Research Group on Wear of EngineeringMaterials, Glossary of Terms and Definitions in theField of Friction, Wear and Lubrication: Ttribology,Organisation for Economic Co-operation andDevelopment, Paris, 1969.[11] A. Vencl, A. Rac, B. Ivković: Investigation ofabrasive wear resistance of ferrous-based coatingswith scratch tester, Tribology in Industry, Vol. 29,No. 3-4, pp. 13-16, 2007.[12] A. Alil, B. Katavić, M. Ristić, D. Jovanović, M.Prokolab, S. Budimir, M. Kočić: Structural andmechanical properties of different hard weldedcoatings for impact plate for ventilation mill, Welding& Material Testing, Vol. 20, No. 3, pp. 7-11, 2011.13 th International Conference on Tribology – Serbiatrib’13 79
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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
Page 41 and 42: Table 1: Chemical composition of sa
Page 43 and 44: Table 4: Comparative wear-resistanc
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Page 47 and 48: - measuring of coating thickness h
Page 49 and 50: Figure 5. Functional scheme of the
Page 53 and 54: Table 2. Test results for massive w
Page 55 and 56: knowledge transfer in the field ofm
Page 57 and 58: Table 1. Parameters of the electroc
Page 59 and 60: Figure 6. Wear resistance by linear
Page 61 and 62: coatings and observed their good we
Page 63 and 64: c)a)Figure 2: SEM images and micros
Page 65 and 66: Room temperature 300°CNi/µSiCNiNi
Page 67 and 68: COF [-] COF [-]Fig.9: COF graphs at
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Page 73 and 74: contact’s conformity [18] they ob
Page 75 and 76: In order to calculate the metallic
Page 77 and 78: microscopic inspection of the Rp3 s
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Page 83 and 84: similar trends of variation are obs
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Page 87 and 88: [2] Tabor, D.: “Friction and wear
Page 91: (10, 50 and 100 N) against surface
Page 95 and 96: dielectric properties, high resista
Page 97 and 98: parameter, Sv, was slightly influen
Page 99 and 100: dependence of roughness height and
Page 103 and 104: Polyethylenes with a molecular weig
Page 105 and 106: [9] K.S. Kanaga Karuppiah, A.L. Bru
Page 107 and 108: MgCO3•CaCO3 (13% Mg), and carnall
Page 109 and 110: fully compatible with MRI/MSCT imag
Page 111 and 112: 5. CONCLUSIONThe magnesium alloys a
Page 113 and 114: Zinc dialkyldithiophosphate (ZDDP)
Page 115 and 116: C- Lower deposits with NPNA on comb
Page 117 and 118: films. Carraro et al. [10] examined
Page 119 and 120: PlateCount No.Critical Load ( N)120
Page 121 and 122: solid melt of ZA27 alloy using mech
Page 123 and 124: SiC particles are uniformly distrib
Page 125 and 126: in number of micro-cracks and clust
Page 129 and 130: PBT has the average values of the f
Page 131 and 132: mechanical pressure and thermal loa
Page 135 and 136: 3. EXPERIMENTAL RESULTSTaking into
Page 137 and 138: [12] L. Blunt De, X. Jiang: Advance
Page 139 and 140: 2. EXPERIMENTALTESTING2.1 MaterialT
Page 141 and 142: 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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[4] W. Schatt, K-P. Wieters, Pulver
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assumption allows us to use, instea
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where P is the load, a - radius of
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determination (total running in tim
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μm, compared with Figure 17, wich
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Serbian TribologySocietySERBIIATRIB
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Especially when the chain transfer
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is obvious that this isa so-calledw
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winches. The authors are inclined t
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find parameters of robot laser hard
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each of which is measured by the le
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Fractal dimensions were determined
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Figure 3. Modified force acting sch
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0.25Lubricant: L3DC 04Friction coef
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nanocomposites. The influence of fi
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4. RESULTS AND DISCUSSION4.1 Morpho
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Figure 6. Loading and unloadin vers
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3 8 12 1 4 2 4
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The material after qualifying the r
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It has already been mentioned that
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Degradation & Stability, Vol. 69, N
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conformance to researchers’ requi
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This part is assembled of pneumatic
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matrixes describe the state of the
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values influence of themeasurement
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Figure 1. Friction stir weldinga -
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(t 2 t
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M fr / T [-] [-]10.90.80.70.60.50.4
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M fr / T [-]10.90.80.70.60.50.40.30
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experimentally determined that for
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4. DISCUSSIONAccording to the theor
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2.1 The life cycle of the reportThe
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Obviously the report is checked and
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uticaja na osnovu kompozita, a time
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5. ZAKLJUČCIStruktura tiksolivene
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dobijene različite karakteristike
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vizuelno, na dnevnoj svetlosti, pod
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LITERATURA[1] Зинченко В.
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Slika 1. Rotorni bager - glodar VII
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stvaraju sliku stanja i svoja zapa
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njihovih kotrljanih elemenata. Mere
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postupka i uticaja parametara depoz
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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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