Data from Block-on-Ring Wear Tests of Victrex FG340 in Dry Sliding versus AISI 52000 steel

The data has been collected during Block-on-Ring Wear Tests on "Victrex PEEK FG340". The tests were done in dry sliding against AISI 52000 steel rings, ground twist-free to 𝑅a = 0.14–0.19 μm, 𝑅z = 1.5–1.9 μm and with a hardness of 60–62 HRc in standard laboratory atmosphere (21–25 °C, 40–60% rH). The research objective was to determine the coefficient of friction of this material pair for use in the calculation of transient temperatures and dimensions during the process of designing a journal bearing. Test conditons were conducted on an ASTM G137-compliant Block-on-Ring tribometer from Tribologic GmbH, Germany. The tests were conducted at 1 MPa in uniform, unidirectional sliding at 1.0 m/s and lasted 6 hours each, resulting in a total sliding distance of 21,600 m for each test. Block cross section was 16 mm² and fiber orientation (if applicable) was nominally parallel (with respect to an ISO 527-1A speciment). Individual test results for the coefficient of friction, the linear, time-dependent wear rate and the counter body temperature were calculated from time-resolved sensor data. For this, data from the running-in phase of each experiment was ignored. For statistical reasons eight individual tests were conducted and - after elimination of outliers using Nalimov's variant of the Grubbs test - arithmetic mean and (frequentist) confidence intervals (95 %) were determined for the aforementioned quantities. This resulted in a COF of 0.28-0.32, a linear, time-dependent wear rate of 0.6 - 1.0 µm/h and a counter body temperature of 31.2 - 32.4 °C.

For each of the 8 conducted tests, a plain-text columnar data file is provided ("*.proc"). Instead of including one or more header lines for denoting the meaning, name and unit of each column, a yaml-formatted, human-readable header file is provided ("*.yaml"). Column-indexing starts at 0, i.e. the first column of the data file is represented by index 0. Data and header files are matched by their test ids, which range from 555689 to 555696 in this data set.

本数据集采集自针对Victrex PEEK FG340（Victrex聚醚醚酮FG340）开展的块环磨损试验（Block-on-Ring Wear Tests）。试验采用干滑动摩擦模式，对偶件为经无扭转磨削加工的AISI 52000钢环，其轮廓算术平均偏差（Ra）为0.14~0.19 μm，微观不平度十点高度（Rz）为1.5~1.9 μm，洛氏硬度C标尺（HRc）为60~62，试验环境为标准实验室大气（温度21~25 ℃，相对湿度40~60% rH）。本研究的目标为测定该摩擦副的摩擦系数（coefficient of friction, COF），用于轴颈轴承设计过程中的瞬态温度与尺寸计算。试验在德国Tribologic GmbH公司生产的符合ASTM G137标准的块环摩擦磨损试验机上完成，试验参数为：接触压力1 MPa，滑动速度1.0 m/s的均匀单向滑动，单次试验时长6小时，单次试验总滑动距离达21600 m。试样块截面积为16 mm²，纤维取向（若适用）名义上平行于ISO 527-1A标准试样的取向。从时间分辨传感器数据中可计算得到单次试验的摩擦系数、随时间变化的线性磨损率以及对偶件温度结果，为此所有试验的跑合阶段数据均被剔除。出于统计学考量，本次共开展8组独立试验；采用格鲁布斯检验（Grubbs test）的纳利莫夫变体（Nalimov's variant）剔除异常值后，计算得到上述各指标的算术平均值与（频率学派）95%置信区间。最终得到的摩擦系数范围为0.28~0.32，随时间变化的线性磨损率为0.6~1.0 µm/h，对偶件温度范围为31.2~32.4 ℃。
针对8组试验中的每一组，均提供了纯文本列格式数据文件（文件扩展名为"*.proc"）。数据文件未通过表头行说明各列的含义、名称与单位，而是配套提供了yaml格式的人类可读表头文件（文件扩展名为"*.yaml"）。列索引从0开始，即数据文件的第一列对应的索引为0。数据文件与表头文件通过试验ID进行匹配，本次数据集的试验ID范围为555689至555696。