Abstract The application of the degradation entropy generation (DEG) theorem in assessing the degradation of tribo-pair experiencing dry as well as lubricated adhesive wear has been recently demonstrated. DEG theorem correlates the degradation forces and the entropy generation through a so-called degradation coefficient, B. The present paper endeavors to extend the application of the method to treat abrasive wear. For this purpose, a pin-on-disk test apparatus is used with pins and abrasives having different hardness ratios with extended tests on abrasives of different types and grit sizes. Results show that the grit number of abrasive sheets exhibited a pronounced effect on the wear rate as well as the friction coefficient. Inclusion of the friction coefficient in the evaluation of the wear coefficient, Kab, reduces the variation with wear rate with the grit size. The effectiveness of using the thermodynamic degradation coefficient B over Kab is demonstrated by determining the wear rate values for extensive sets of experimental results conducted over a wide range of operating conditions. The efficacy of the DEG theorem is demonstrated for a tribo-pair experiencing abrasive wear due to different combinations of particle sizes and types of abrasives. Illustrative examples of the applications of the results to polishing and grinding operations are presented to show the utility of the approach.

中文翻译：

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使用退化系数表征磨粒磨损

摘要 最近证明了退化熵生成 (DEG) 定理在评估摩擦副经历干燥和润滑粘附磨损的退化中的应用。DEG 定理通过所谓的退化系数 B 将退化力和熵产生相关联。本文致力于扩展该方法在处理磨料磨损方面的应用。为此，销盘式测试设备用于具有不同硬度比的销钉和磨料，并对不同类型和粒度的磨料进行扩展测试。结果表明，磨料片的粒度对磨损率和摩擦系数有显着影响。将摩擦系数包括在磨损系数的评估中，Kab，减少磨损率随磨粒尺寸的变化。通过确定在各种操作条件下进行的大量实验结果的磨损率值，证明了使用热力学降解系数 B 比 Kab 的有效性。DEG 定理的有效性在摩擦副因颗粒尺寸和磨料类型的不同组合而经历磨料磨损时得到证明。展示了将结果应用于抛光和研磨操作的说明性示例，以展示该方法的实用性。DEG 定理的有效性在摩擦副因颗粒尺寸和磨料类型的不同组合而经历磨料磨损时得到证明。展示了将结果应用于抛光和研磨操作的说明性示例，以展示该方法的实用性。DEG 定理的有效性在摩擦副因颗粒尺寸和磨料类型的不同组合而经历磨料磨损时得到证明。展示了将结果应用于抛光和研磨操作的说明性示例，以展示该方法的实用性。