Mechanisms of scratching frictions and damage maps for rubber compounds

Maeda, K.; Bismarck, Alexander; Briscoe, B.J.

doi:10.1016/j.wear.2005.02.046

Cited by 24 publications

(16 citation statements)

References 26 publications

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“…The scratch loading mode was used for the establishment of the first hardness scale in the pioneering work of Mohs (1824), but the technique is mostly being used nowadays in specialized areas including the visual damage and wear of polymers (Briscoe et al, 1993;Dasari et al, 2004;Misra et al, 2004;Maeda et al, 2005;Mohamed Sani et al, 2005) and the tribological resistance of metallic-base composites (Zhang et al, 1994(Zhang et al, , 1995Liang et al, 1995;Deuis et al, 1996;Wilson et al, 2000;Bolduc et al, 2003). The limited usage to characterize the plastic flow behavior is mostly due to the lack of an appropriate analytical framework to interpret frictional sliding experiments.…”

Section: Introductionmentioning

confidence: 99%

The frictional sliding response of elasto-plastic materials in contact with a conical indenter

Bellemare

Dao

Suresh

2007

International Journal of Solids and Structures

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Over the past decade, many computational studies have explored the mechanics of normal indentation. Quantitative relationships have been well established between the load-displacement hysteresis response and material properties. By contrast, very few studies have investigated broad quantitative aspects of the effects of material properties, especially plastic deformation characteristics, on the frictional sliding response of metals and alloys. The response to instrumented, depth-sensing frictional sliding, hereafter referred to as a scratch test, could potentially be used for material characterization. In addition, it could reproduce a basic tribological event, such as asperity contact and deformation, at different length scales for the multi-scale modeling of wear processes. For these reasons, a comprehensive study was undertaken to investigate the effect of elasto-plastic properties, such as flow strength and strain hardening, on the response to steady-state frictional sliding. Dimensional analysis was used to define scaling variables and universal functions. The dependence of these functions on material properties was assessed through a detailed parametric study using the finite element method. The strain hardening exponent was found to have a greater influence on the scratch hardness and the pile-up height during frictional sliding than observed in frictionless normal indentation. When normalized by the penetration depth, the pileup height can be up to three times larger in frictional sliding than in normal indentation. Furthermore, in contrast to normal indentation, sink-in is not observed during frictional sliding over the wide range of material properties examined. Finally, friction between indenter and indented material was introduced in the finite element model, and quantitative relationships were also established for the limited effects of plastic strain hardening and yield strength on the overall friction coefficient. Aspects of the predictions of computational simulations were compared with experiments on carefully selected metallic systems in which the plastic properties were systematically controlled. The level of accuracy of the predicted frictional response is also assessed by recourse to the finite element method and by comparison with experiment.

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Section: Introductionmentioning

confidence: 99%

The frictional sliding response of elasto-plastic materials in contact with a conical indenter

Bellemare

Dao

Suresh

2007

International Journal of Solids and Structures

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“…The pendulum scratching experiments were reported elsewhere [18][19][20]. Scratch tests quickly provide various samples with adequate surface damage.…”

Section: Scratch Testsmentioning

confidence: 99%

“…The scratching tests were repeated 10 times with the initial angle of 150 • for each rubber compound. The experimental details are fully described in [20].…”

Section: Scratch Testsmentioning

confidence: 99%

“…Their frictional behaviour and the surface damage produced by pendulum scratching were investigated [20]. The pure NR compound shows the roll debris formation after scratching whereas the SBR with 45 phr CB does not show any roll formation, although the stress-strain curves of two compounds are very similar.…”

Section: Implications For Roll Debris Formationmentioning

confidence: 99%

“…The SBR compounds, whose mechanical strength is very similar to that of the NR compounds [20], should show the roll formation after a single scratching if it would be true that the roll debris formation is solely determined by the mechanical strength of the rubber bulk/surface. Fig.…”

Section: Implications For Roll Debris Formationmentioning

confidence: 99%

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