An Improved Understanding of Tread Wear and Its Prediction Sparks-Thomas Award Presentation(PPT)

摘要

Summary and Conclusions:1.Standard laboratory abrasion tests (e.g.Akron) do not correlate well to in-service tire road wear data.2.LM showed Akron test pieces have a wear pattern different to that of tires.3.TEM observed weaknesses in rubber-filler interaction in close proximity to the surface of on-the-road worn tire treads.4.The Akron abrasion test is more severe than normal tire wear with reduced loss of rubber-filler interaction at the worn surface.5.Blade abrasion has a higher wear rate when emanating particulate matter than stickiness.6.Mild conditions gives greater iikelyhood of stickiness.7.Stickiness lubricates the blade/testpiece contact impeding wear.8."Sticky layer”has highly degraded network & altered filler concentration.9.The sub-surface has weakened rubber-filler interaction.10.Wear mechanism for on-the-road tires not replicated by Akron test but blade abrader shows some simalarities.