Fatigue Monitoring of Composites (F-MOC) dataset

Dataset for reproducing the results of the third dataset, namely the Fatigue Monitoring of Composites (F-MOC) dataset, of the paper "A robust generalized deep monotonic feature extraction model for label-free prediction of degenerative phenomena". The setup comprises a 100 kN MTS fatigue controller connected to a bench machine, an impact cannon, an acoustic emission system, and two cameras used for DIC measurements. The cameras are capturing images of the specimen periodically every 50 seconds. To capture the acoustic emission signals generated during fatigue, an AMSY-6 Vallen Systeme GmbH, an 8-channel AE system with a sampling rate of 2 MHz, was utilized. A single broadband single-crystal piezoelectric transducer was affixed to the side of specimens using a clamping device situated between the lower grip of the fatigue machine and a safety aluminum cylinder. Ultrasound gel was applied for optimal acoustical coupling between the sensor and specimen surfaces. To ensure proper connectivity, a standard pencil lead break procedure verified the specimen-sensor connection before both the fatigue test and setting the threshold at 50 dB. The material at hand is a unidirectional Prepreg tape Hexply® F6376CHTS(12K)-5-35. The laminate is manufactured using a hand lay-up of [0/45/90/ -45] and is cured in an autoclave at a temperature of 180 Celsius and pressure of 9 bar for 120 minutes as recommended by the manufacturer. The laminate is consequently cut to obtain specimens of 400 mm x 45 mm with an average thickness of 2.28 mm. The steps to reproduce the dataset are shown below. Additional details about the experimental setup can be found at the relative link at the end of this page.本数据集用于复现论文《面向退化现象无标记预测的鲁棒广义深度单调特征提取模型（原标题：A robust generalized deep monotonic feature extraction model for label-free prediction of degenerative phenomena）》中第三个数据集，即复合材料疲劳监测（Fatigue Monitoring of Composites, F-MOC）数据集的实验结果。 实验装置包含一台连接至台架试验机的100 kN MTS疲劳控制器、冲击炮、声发射系统，以及两台用于数字图像相关（Digital Image Correlation, DIC）测量的相机。相机每50秒周期性采集试样图像。为采集疲劳过程中产生的声发射信号，本研究采用了由Vallen Systeme GmbH出品的AMSY-6型8通道声发射系统，其采样率达2 MHz。采用单宽带单晶压电换能器，通过安装在疲劳试验机下夹头与安全铝筒之间的夹具将其固定于试样侧面，并使用超声耦合剂以实现传感器与试样表面间的最佳声学耦合。为确保连接可靠，在疲劳试验开始前以及将阈值设置为50 dB前，均通过标准铅笔芯断裂法验证了传感器与试样间的连接有效性。 本次实验所用材料为单向预浸带Hexply® F6376CHTS(12K)-5-35。该层压板采用[0/45/90/-45]铺层手工铺叠，并按照制造商建议，在180℃、9 bar压力下于高压釜中固化120分钟。随后将层压板切割为400 mm×45 mm的试样，平均厚度为2.28 mm。 复现该数据集的步骤如下。有关实验装置的更多详细信息可参见本文末尾的相关链接。