Data for: Soft Body Armor Time-Dependent Back Face Deformation (BFD) with Ballistics Gel Backing

This dataset contains the data for the paper "Soft Body Armor Time-Dependent Back Face Deformation (BFD) with Ballistics Gel Backing". In this work ballistics gelatin-backed, multi-layer, Kevlar fabric samples were impacted using a gas gun. The purpose of this dataset is to provide validation data for ballistic fabric impacts with a backing material, in this case 10% (FBI standard) and 20% (NATO Standard) ballistics gelatin. Per the terms of the license, this data is available for your use, provided you use proper citations. The dataset includes raw high-speed video of the back face deformations during impact from side and angled-back views, as well as processed depth-time data. All high-speed video was recorded at 100,000 frames/sec (10 microseconds between frames), and given at a playback rate of 25 frames/sec (4000 times slower than real time). In the raw videos, there are approximately 10 frames before projectile impact. Depth was calculated using an image processing algorithm in MATLAB, see paper for more details. Because the impact typically occurs between frames, the exact impact time is estimated by extrapolating back to zero depth and adjusting the time vector accordingly (the first data point in the depth data is the estimated time of zero depth). Data is given for the 68 tests conducted at North Carolina State University for this work. An spreadsheet with an overview of the test parameters and key metrics is given in "Overview.csv", and the calibration values needed for processing data from the raw video are given in "Calibrations.csv". The video and depth file prefixes match the values in the "Shot ID" column of the the "Overview.csv" spreadsheet.本数据集配套论文《带弹道明胶背板的软体装甲背面形变（BFD）时变特性》（Soft Body Armor Time-Dependent Back Face Deformation (BFD) with Ballistics Gel Backing）。本研究采用气枪对搭载弹道明胶背板的多层凯夫拉（Kevlar）织物试样开展冲击试验。本数据集旨在为搭载背板的弹道织物冲击试验提供验证数据，本次试验所用背板为10%（美国联邦调查局（FBI）标准）与20%（北大西洋公约组织（NATO）标准）浓度的弹道明胶。根据许可协议条款，本数据集可合法使用，但需规范引用相关研究文献。本数据集包含冲击过程中侧面与后斜视角下的背面形变原始高速视频，以及经过后处理的深度-时间数据。所有高速视频的录制帧率为100,000帧/秒（帧间隔为10微秒），播放速率设置为25帧/秒（较真实速度慢4000倍）。原始视频中，弹体冲击前约包含10帧画面。深度数据通过MATLAB中的图像处理算法计算得出，详细方法参见配套论文。由于冲击通常发生在两帧图像之间，因此通过外推至零深度并相应调整时间向量，以估算精确的冲击时刻（深度数据的首个数据点即为零深度的估算时刻）。本数据集涵盖北卡罗来纳州立大学为本研究开展的68组冲击试验数据。文件"Overview.csv"包含试验参数与关键指标的汇总表格，文件"Calibrations.csv"则提供了原始视频数据处理所需的校准参数。视频与深度文件的前缀名称与"Overview.csv"表格中"Shot ID"列的取值一一对应。