Bellini Costanzo, Di Cocco Vittorio, Iacoviello Daniela, Iacoviello Francesco
Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via G. Di Biasio, 43, 03043 Cassino, Italy.
Department of Computer, Control and Management Engineering, Sapienza University of Rome, Via Ariosto, 25, 00185 Roma, Italy.
Materials (Basel). 2023 Dec 29;17(1):189. doi: 10.3390/ma17010189.
Brake pad linings are an essential part of the correct functioning of braking systems based on the use of pads and discs. Generally, the compounds used to make the gaskets are characterised by the use of over 20 sintered components, which allow friction coefficients that vary between 0.2 and 0.6 at temperatures up to 200 °C. In this work, a traditional compound was investigated under close-to-real conditions in order to evaluate the tribological behaviour at different temperatures. Finally, a model based on the proportionality between temperature increase and relative variation of the friction coefficient was proposed. From the experimental test, it was evident that the friction coefficient increased with the temperature, passing from 0.4 to 0.6 in the temperature range of 100 °C to 180 °C; however, a further temperature increment until 350 °C caused a reduction in the friction coefficient to 0.2. The proposed model was able to anticipate the abovementioned trend, especially at high temperatures.
基于刹车片和刹车盘的制动系统，制动衬片是其正常运行的重要组成部分。一般来说，用于制造垫片的化合物的特点是使用了20多种烧结部件，这使得在高达200°C的温度下，摩擦系数在0.2至0.6之间变化。在这项工作中，对一种传统化合物在接近实际的条件下进行了研究，以评估其在不同温度下的摩擦学行为。最后，提出了一个基于温度升高与摩擦系数相对变化之间比例关系的模型。从实验测试中可以明显看出，摩擦系数随温度升高而增加，在100°C至180°C的温度范围内从0.4升至0.6；然而，温度进一步升高至350°C会导致摩擦系数降至0.2。所提出的模型能够预测上述趋势，尤其是在高温下。
