VAFW cylinders 2020, S1, S2, S4, S8, stitched imperfections

The files contain geometric imperfection data of variable-angle filament-wound (VAFW) cylinders. The data is generated by the stitching algorithm described in the manuscript: Castro, S. G. P., Almeida, J. H. S., Jr., St-Pierre, L., & Wang, Z. "Measuring geometric imperfections of variable-angle filament-wound cylinders with a simple digital image correlation setup". Composite Structures, 2021. 10.1016/j.compstruct.2021.114497 In that manuscript, the naming convention translates as follows. Cylinder name in the dataset <--> cylinder name in the manuscript: S1 <--> MA S2 <--> CA S4 <--> VAFW4 S8 <--> VAFW8 The geometry for all cylinders is: Radius: 68 mm Height: 300 mm The nominal mass of each cylinder is: S1: 148 g S2: 146 g S4: 149 g S8: 165 g The mass of each cylinder can obtained with the measured thickness, assuming a mass density of 1600 kg/m^3: S1-1-measurement-1 , mass [g], 148.04908367397067 S1-1-measurement-2 , mass [g], 148.06366872269544 S1-1-measurement-3 , mass [g], 148.07853475262579 S1-2-measurement-1 , mass [g], 148.12795252244214 S1-2-measurement-2 , mass [g], 148.18336161880055 S1-2-measurement-3 , mass [g], 148.13671728820555 S1-3-measurement-1 , mass [g], 148.02889844076526 S1-3-measurement-2 , mass [g], 148.07346957933277 S1-3-measurement-3 , mass [g], 148.05218142229177 S2-1-measurement-1 , mass [g], 146.03702890361745 S2-1-measurement-2 , mass [g], 146.0667964152358 S2-1-measurement-3 , mass [g], 146.062382271943 S2-2-measurement-1 , mass [g], 145.96773915505852 S2-2-measurement-2 , mass [g], 145.98095334963728 S2-2-measurement-3 , mass [g], 145.96911295676836 S2-3-measurement-1 , mass [g], 145.96503867661744 S2-3-measurement-2 , mass [g], 145.97143963499434 S2-3-measurement-3 , mass [g], 145.96604504264243 S4-1-measurement-1 , mass [g], 149.01060556798063 S4-1-measurement-2 , mass [g], 149.02315109376266 S4-1-measurement-3 , mass [g], 149.02602382977014 S4-2-measurement-1 , mass [g], 149.1244878768776 S4-2-measurement-2 , mass [g], 149.16120601624365 S4-2-measurement-3 , mass [g], 149.0956174217226 S4-3-measurement-1 , mass [g], 149.07358988366047 S4-3-measurement-2 , mass [g], 149.07591392086718 S4-3-measurement-3 , mass [g], 149.01711325199713 S8-1-measurement-1 , mass [g], 164.7732786126909 S8-1-measurement-2 , mass [g], 164.7708215699278 S8-1-measurement-3 , mass [g], 164.77019780435964 S8-2-measurement-1 , mass [g], 164.67137223901923 S8-2-measurement-2 , mass [g], 164.6618011844223 S8-2-measurement-3 , mass [g], 164.65422000625884 S8-3-measurement-1 , mass [g], 164.70843953800022 S8-3-measurement-2 , mass [g], 164.70712745911177 S8-3-measurement-3 , mass [g], 164.69301645319925 All coordinates (x,y,z) and the imperfection amplitude (imp) are in millimeters. Files: XXX_msi.txt contain imperfection in rectangular coordinates, represented by a cloud of points and their respective x,y,z position. Files: XXX_msi_theta_z_imp.txt contain imperfection in polar coordinates: theta, z, imperfection amplitude. These file formats are ready to be used with the DESICOS plug-in for Abaqus.本数据集包含变角纤维缠绕（variable-angle filament-wound, VAFW）圆柱的几何缺陷数据。该数据由下述论文中提出的拼接算法生成：Castro, S. G. P., Almeida, J. H. S., Jr., St-Pierre, L., & Wang, Z. 《使用简易数字图像相关（digital image correlation, DIC）装置测量变角纤维缠绕圆柱的几何缺陷》，《Composite Structures》，2021，DOI: 10.1016/j.compstruct.2021.114497。 该论文中规定的命名规则与本数据集的圆柱名称对应关系如下： 数据集内圆柱名称 ↔ 论文中圆柱名称： S1 ↔ MA S2 ↔ CA S4 ↔ VAFW4 S8 ↔ VAFW8 所有被测圆柱的通用几何参数统一为：半径68 mm，高度300 mm。 各圆柱的标称质量分别为： S1：148 g S2：146 g S4：149 g S8：165 g 可通过实测壁厚结合1600 kg/m³的材料密度计算得到各圆柱的实测质量，部分实测质量示例如下： S1-1-measurement-1，质量[g]，148.04908367397067 S1-1-measurement-2，质量[g]，148.06366872269544 S1-1-measurement-3，质量[g]，148.07853475262579 S1-2-measurement-1，质量[g]，148.12795252244214 S1-2-measurement-2，质量[g]，148.18336161880055 S1-2-measurement-3，质量[g]，148.13671728820555 S1-3-measurement-1，质量[g]，148.02889844076526 S1-3-measurement-2，质量[g]，148.07346957933277 S1-3-measurement-3，质量[g]，148.05218142229177 S2-1-measurement-1，质量[g]，146.03702890361745 S2-1-measurement-2，质量[g]，146.0667964152358 S2-1-measurement-3，质量[g]，146.062382271943 S2-2-measurement-1，质量[g]，145.96773915505852 S2-2-measurement-2，质量[g]，145.98095334963728 S2-2-measurement-3，质量[g]，145.96911295676836 S2-3-measurement-1，质量[g]，145.96503867661744 S2-3-measurement-2，质量[g]，145.97143963499434 S2-3-measurement-3，质量[g]，145.96604504264243 S4-1-measurement-1，质量[g]，149.01060556798063 S4-1-measurement-2，质量[g]，149.02315109376266 S4-1-measurement-3，质量[g]，149.02602382977014 S4-2-measurement-1，质量[g]，149.1244878768776 S4-2-measurement-2，质量[g]，149.16120601624365 S4-2-measurement-3，质量[g]，149.0956174217226 S4-3-measurement-1，质量[g]，149.07358988366047 S4-3-measurement-2，质量[g]，149.07591392086718 S4-3-measurement-3，质量[g]，149.01711325199713 S8-1-measurement-1，质量[g]，164.7732786126909 S8-1-measurement-2，质量[g]，164.7708215699278 S8-1-measurement-3，质量[g]，164.77019780435964 S8-2-measurement-1，质量[g]，164.67137223901923 S8-2-measurement-2，质量[g]，164.6618011844223 S8-2-measurement-3，质量[g]，164.65422000625884 S8-3-measurement-1，质量[g]，164.70843953800022 S8-3-measurement-2，质量[g]，164.70712745911177 S8-3-measurement-3，质量[g]，164.69301645319925 所有坐标（x,y,z）及缺陷幅值（imp）的单位均为毫米。 XXX_msi.txt 文件存储直角坐标系下的缺陷数据，以点云形式记录各测点的x、y、z位置及对应缺陷信息。 XXX_msi_theta_z_imp.txt 文件存储极坐标系下的缺陷数据，依次记录极角θ、轴向坐标z及缺陷幅值。 上述两类文件格式均可直接适配Abaqus的DESICOS插件使用。