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friction coefficient

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Published: 01 December 2003
Fig. 17 Specific wear rate and friction coefficient of unidirectional composites (see Table 4 ) in three orientations (pressure, 1.5 N/mm 2 ; velocity, 0.83 m/s; distance slid, 16 km) More
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Published: 30 September 2023
Figure 8.5: Pressure distribution in the roll gap as a function of friction coefficient. Note that as friction increases, the neutral point shifts toward the entry. Without friction, the rolls will slip, and the neutral point shifts completely to the exit [ 12 ]. Reprinted by permission More
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Published: 30 September 2023
Figure 12.26: Friction coefficient measured for hot-dipped aluminized 22MnB5 steel sliding against tool steels. The tool material is AISI H13 (DIN 1.2379) unless indicated [ 227 , 273 , 274 , 284 – 286 ]. More
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Published: 01 August 2012
Fig. 7.13 Evolution of friction coefficient, μ, with different tool temperature, maintaining punch at room temperature for 22MnB5. Sheet thickness t 0 = 1.75 mm (0.069 in.); austenitization temperature T γ = 950 °C (1740 °F); austenitization time t γ = 5 min; punch velocity V punch More
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Published: 01 August 2012
Fig. 7.14 Friction coefficient, μ, as function of blank temperature in contact area at die radius at moment of maximum drawing force for 22MnB5. Sheet thickness t 0 = 1.75 mm (0.069 in.); austenitization temperature T γ = 950 °C (1740 °F); austenitization time t γ = 5 min; punch More
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Published: 30 April 2021
Fig. 3.15 The trend for friction coefficient measured for many metal-to-metal couples in the ASTM G98 galling test. The coefficient of friction reduces when gross plastic deformation of the rubbing surfaces takes place. More
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Published: 30 April 2021
Fig. 3.20 Friction coefficient trends observed over 30 years of laboratory testing of many different tribocouples More
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Published: 01 August 2012
Fig. 7.11 Effect of temperature on mean friction coefficients under dry conditions. Source: Ref 7.10 More
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300047
EISBN: 978-1-62708-323-2
... Abstract This chapter discusses the effect of friction in the context of design. It explains how friction coefficients are determined and how they are used to make sizing and selection decisions. It covers practical issues associated with rolling friction, the use of lubricants...
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Published: 30 April 2021
Fig. 11.8 Ranges of coefficient of friction for plastic versus steel tribosystems (from various plastics manufacturers’ catalogs). PTFE, polytetrafluoroethylene More
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Published: 30 April 2021
Fig. 11.9 Effect of normal force on the coefficient of friction (kinetic) of acetal versus 316 stainless steel More
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Published: 30 April 2021
Fig. 11.10 Static coefficient of friction of various plastics versus 52100 steel (60 HRC). PE, polyethylene; PTFE; polytetrafluoroethylene; PP, polypropylene; PBT, polybutylene terephthalate; PEEK, polyetheretherketone; PA, polyamide; PET, polyethylene terephthalate; PMMA More
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Published: 30 April 2021
Fig. 11.21 Breakaway coefficient of friction of 14 commercially manufactured shoes (soles) on prefinished oak flooring More
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Published: 30 April 2021
Fig. 11.24 Kinetic coefficient of friction (COF) of four different shoes (same wearer) versus an aluminum walking surface using normal gait More
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Published: 30 April 2021
Fig. 11.26 Breakaway coefficient of friction (COF) of five rubbers sliding on three different counterfaces using the ASTM International D1894 test procedure. PTFE, polytetrafluoroethylene; CBR, cis polybutadiene rubber; CR, chloroprene rubber; EPDM, ethylene propylene diene monomer rubber; SBR More
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Published: 30 April 2021
Fig. 12.8 Kinetic coefficient of friction of test couples measured during steady-state wear in the ASTM International G77 block-on-ring test More
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Published: 30 April 2021
Fig. 14.8 Breakaway coefficient of friction in an inclined plane test (ASTM International G214) of aluminum versus liquid-covered polytetrafluoroethylene More
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Published: 01 August 2012
Fig. 7.16 Effect of die pressure on mean coefficient of friction, μ m . Source: Ref 7.23 More
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Published: 01 August 2012
Fig. 7.17 Effect of furnace temperature on mean coefficient of friction, μ m , both under the dry condition and with a lubricant (Lub.), for two types of steel. Source: Ref 7.23 More
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Published: 01 August 2012
Fig. 7.18 Effect of scale thickness on mean coefficient of friction, μ m . Source: Ref 7.24 More