Data in manuscript titled 'Fracture mechanism of adhesive single-lap joints with composite adherends under quasi-static tension'

The research is aimed to understanding of the fracture mechanism of Single-lap joints (SLJs) with composite adherends. The main findings of the research are as follow.  Fracture surface of SLJs are observed in detail with scanning electron microscope.  Crack initiation of both types of SLJs are captured by high-speed camera.  Fracture process of SLJs are demonstrated based on experimental results.  Sand paper treatment shows an effect on the failure modes of SLJs.  CZM with experimentally obtained parameters predicts the failure modes and failure loads well. The raw data include the results of tensile test and short beam shear test of a CFRP as well as the tensile test results of 4 types of SLJs. The processed data are derived from the raw data, mainly in the form of figure.本研究旨在探究复合材料被粘物单搭接接头（Single-lap joints, SLJs）的断裂机理。本研究的主要发现如下： 1. 借助扫描电子显微镜对单搭接接头的断裂表面开展了细致观测； 2. 通过高速摄影机捕捉到两类单搭接接头的裂纹萌生过程； 3. 基于实验结果阐明了单搭接接头的断裂过程； 4. 砂纸处理对单搭接接头的失效模式具有显著影响； 5. 采用实验标定参数的内聚力模型（Cohesive Zone Model, CZM）可较好地预测单搭接接头的失效模式与失效载荷。 本数据集的原始数据包含碳纤维增强复合材料（Carbon Fiber Reinforced Polymer, CFRP）的拉伸试验与短梁剪切试验结果，以及4类单搭接接头的拉伸试验结果；经过处理的数据由原始数据衍生得到，主要以图像形式呈现。