A new test method to simulate low-severity wear conditions experienced by rubber tire materials

Abstract

An innovative rotary tribometer was developed in order to reproduce the abrasive wear of reinforced rubber materials for tire. The device allows performing accelerated, quantitative friction and wear tests which mimic real usage conditions in terms of kinematics and dynamics of the contact, temperature and open cycle conditions, specifically in low severity conditions, which often represent a challenge to mimic and study. The specific point emphasized here is the strong impact of wear debris accumulated in the contact zone on the measured wear rate. To quantify this phenomenon, the amount of wear debris in the contact was varied by changing the frequency at which debris are eliminated. It was found that the presence of more debris in the contact zone generally decreases the wear rate. Two distinct types of wear debris were identified, which are likely to correspond to two distinct mechanisms of wear. Within a transitory period at the beginning of the tests, wear debris essentially consist in a sticky layer of soluble (thus decrosslinked elastomer material). Further on, a steady regime (representative of wear in real low severity conditions) occurs, with a well established ridge pattern, in which the predominant wear mechanism consists in tearing away material fragments of micrometric sizes. The proposed test method allows discriminating quantitatively these mechanisms.

Particles formation due to the wear of tires and measures for the wear reduction: A review

“…However, not all of them are used during the measurement of particles which have formed during the wear of tires. Some of this methods were shown in the research of Xiang et al 71,72 The application of the CPC (Condensation Particle Counter) and the atomizer is limited to the [57][58][59][60][61] detection of particles whose size is 5 nm, while more reliable measurement of smaller particles can be conducted by filters. In each case, the most influential parameter on the sampling accuracy was the flow rate, so all of this should be taken in the consideration during the future researches.…”

Optimization research on arc height of running surface based on reducing partial wear of straddle-type monorail vehicle running wheel tire

“…According to the stress-strain of rubber materials in experimental tests, as shown in Figure 4, the fitting coefficient C 10 and C 01 of the cord thread glue, apex, and sidewall rubber can be obtained. 21,22 The rubber materials and characteristic parameters of the running wheel are shown in Tables 1 and 2.…”

A novel methodology for evaluating wear behavior of rubber composites under combination of sliding and rolling conditions

“…There are so many studies relative to the sliding wear of rubber composites. [12][13][14][15][16] Dong et al [17] has investigated the tribological properties of nitrile butadiene rubber affected by aging processes and the main wear mechanism was fatigue wear under sliding conditions. Similarly, because the wear resistance of pure rubber materials is very limited in engineering applications, Lin et al [18] has studied tribological properties of SBR/BR rubber composites reinforced with graphene and cellulose nanocrystal (CNC) under dry sliding conditions, it was found that the friction and wear properties of the rubber composites strongly depend on the normal load and sliding velocity.…”