Dataset for Glass Reinforced aluminum (GLARE) Laminates subjected to three-Point Bending

Dataset for Glass Reinforced aluminum (GLARE) Laminates subjected to three-Point Bending Shreyas Anand, Nachiket Dighe, Pranshul Gupta, Ren´e Alderliesten and Saullo G.P. Castro Faculty of Aerospace, Delft University of Technology 16 July, 2025 Introduction This dataset contains data for GLARE laminates subjected to 3-point bending loads. The dataset includes experimental data and data obtained from a proposed semi-analytical modeling approach for central cracking failure of GLARE laminates. The dataset aims to support the development and validation of analytical or numerical models for damage and energy absorption in GLARE fiber-metal laminates. Researchers working on crashworthiness and impact may find this data particularly useful. The dataset was compiled from experimental testing conducted at TU Delft to characterize the bending response of various GLARE configurations. Each test corresponds to a unique combination of GLARE type, layer sequence, fiber orientation, and loading rate. The primary focus of the experimental campaign was to identify the effect of various parameters on failure mechanism and the energy absorption for various GLARE specimens. 1. File Structure and Nomenclature The dataset is structured as follows: •Analytical Model results without shear/: Contains results from the analytical model. •Dataset {XXXX}mmpm/: Contains CSV files with force vs. displacement data, where XXXX is the displacement rate (1, 10, 100, or 1000 mm/min). –CSV files are named as: GL {A} {B} {C} {D} {E} {F} {G}.csv, where: ∗A: Displacement rate (1, 10, 100, or 1000) ∗B: GLARE type (2A, 2B, 3, 4A, or 4B) ∗C: Layer structure (e.g., 4sl3 = 4 Al / 3 GF) ∗D: Orientation (L= longitudinal, T= transverse) ∗E: Aluminium layer thickness (e.g., 0p3 = 0.3 mm) ∗F: Sample number (e.g., S4) ∗G: Failure mode (CC,D,LD) •Dataset All displacement rates/: Contains merged data for all displacement rates. •GLARE CODE/: Code and results related to the semi-analytical model. –RUN {XXXX}MMPM/: Contains code, modules, model outputs, stress-strain data, configuration files. –Glare dataset TRUESS {XXXX}mmpm.py: Main Python code for analytical model. –Modules/: Python modules used in the analytical model. –CONFIGS {XXXX}mmpm.csv: Tested configurations for a given rate. –Results without shear/,Results with shear/: Output results with/without shear modeling. –AL2024 MULTI.csv,GL T HB.csv: Stress-strain data for AL2024 and glass fiber. –Output with shear {XXXX}mmpm.csv,Output without shear {XXXX}mmpm.csv: Final output files. 1 •Images {XXXX}mmpm/: Contains post-test JPG images named using the same convention as CSV files. •Unknown cases/: Folders with unverified samples and explanatory notes. These cases are excluded from analysis. •Videos 1000mmpm Mobile phone non scientific/: Unaligned videos of 1000 mm/min tests. Use with caution. •Dimensions sheet/: Dimensional data for all tested samples. •Peak and Energy Absorbed CC cases-EXP-vs-ANALYTICAL/: Experimental vs. analytical peak and energy data. •Results modulus max force energy/: Contains processed data: modulus (GPa), max force (kN), SEA (kJ/kg). 2. Experimental setup The tests were conducted using a 3-point bending setup installed on a Zwick 10 kN/20 kN Universal Testing Machine (UTM), at the Delft Aerospace Structures and Materials Laboratory (DASML). A 20 kN Zwick load cell was used, with data sampled at frequencies of up to 25 Hz. For displacement rates of 100 mm/min or higher, a pre-load of 5 N was applied. The pre-loading rate was carefully matched to the test loading rate in each case. A schematic of the test setup is presented in Figure 1 where b is span, h is thickness and R is radius of supporting and loading pins. R=1.5 R=1.5 h b Figure 1: Test-setup for 3-point bending 3. Configuration data-sheets This section contains a data-sheet for each tested configuration. A configuration is a set of experiments which have the same displacement rate and structure. The layout of the datasheet is explained in Figure 2. b=          60 mm,if h > 6 mm 10 ×h, if 1.8 mm ≤h≤6 mm 18 mm,if h < 1.8 mm (1) Note regarding span: The span values for the experimental campaign were obtained using Equation 1. However, when comparing the experimental data against the semi-analytical model, significant discrepancies in the initial slope were observed in some cases, indicating possible errors in the reported span. In such cases, the semi-analytical model was used to approximate the span values. Therefore, cases where the span values deviate from Equation 1 should be interpreted with caution. These cases are marked in the configuration sheet by the label analytical beside the span value. 2 Figure 2: Layout of a configuration sheet 3 2A-4sl3-L-0.2-10mmpm 4 2A-4sl3-L-0.3-1mmpm 5 2A-4sl3-T-0.2-10mmpm 6 2A-4sl3-T-0.3-1mmpm 7 2A-8sl7-L-0.4-1mmpm 8 2A-8sl7-L-0.4-10mmpm 9 2A-8sl7-T-0.4-1mmpm 10 2A-8sl7-T-0.4-10mmpm 11 2B-7sl6-L-0.4-100mmpm 12 2B-7sl6-L-0.4-1000mmpm 13 2B-7sl6-T-0.4-100mmpm 14 2B-7sl6-T-0.4-1000mmpm 15 2B-11sl10-L-0.3-1mmpm 16 2B-11sl10-L-0.3-10mmpm 17 2B-11sl10-L-0.3-100mmpm 18 2B-11sl10-L-0.3-1000mmpm 19 2B-11sl10-T-0.3-10mmpm 20 3-3sl2-L-0.3-1mmpm 21 3-3sl2-L-0.3-10mmpm 22 3-3sl2-L-0.3-100mmpm 23 3-3sl2-L-0.3-1000mmpm 24 3-3sl2-T-0.3-1mmpm 25 3-3sl2-T-0.3-10mmpm 26 3-3sl2-T-0.3-100mmpm 27 3-3sl2-T-0.3-1000mmpm 28 3-5sl4-L-0.4-1mmpm 29 3-5sl4-L-0.4-10mmpm 30 3-5sl4-L-0.4-100mmpm 31 3-5sl4-L-0.4-1000mmpm 32 3-5sl4-T-0.4-1mmpm 33 3-5sl4-T-0.4-10mmpm 34 3-5sl4-T-0.4-100mmpm 35 3-5sl4-T-0.4-1000mmpm 36 3-6sl5-L-0.3-1mmpm 37 3-6sl5-L-0.3-10mmpm 38 3-6sl5-T-0.3-1mmpm 39 3-6sl5-T-0.3-10mmpm 40 3-8sl7-L-0.4-1mmpm 41 3-8sl7-L-0.4-10mmpm 42 3-8sl7-L-0.4-100mmpm 43 3-8sl7-L-0.4-1000mmpm 44 3-8sl7-T-0.4-1mmpm 45 3-8sl7-T-0.4-10mmpm 46 4A-7sl6-L-0.4-1mmpm 47 4A-7sl6-L-0.4-10mmpm 48 4A-7sl6-L-0.4-100mmpm 49 4A-7sl6-L-0.4-1000mmpm 50 4A-7sl6-T-0.4-1mmpm 51 4A-7sl6-T-0.4-10mmpm 52 4A-7sl6-T-0.4-100mmpm 53 4A-7sl6-T-0.4-1000mmpm 54 4B-4sl3-L-0.4-100mmpm 55 4B-4sl3-L-0.4-1000mmpm 56 4B-4sl3-T-0.4-100mmpm 57 4B-4sl3-T-0.4-1000mmpm 58 4B-6sl5-L-0.5-1mmpm 59 4B-6sl5-L-0.5-10mmpm 60 4B-6sl5-L-0.5-100mmpm 61 4B-6sl5-L-0.5-1000mmpm 62 4B-6sl5-T-0.5-1mmpm 63 4B-6sl5-T-0.5-10mmpm 64 4B-6sl5-T-0.5-100mmpm 65 4B-6sl5-T-0.5-1000mmpm 66 4B-7sl6-L-0.4-1mmpm 67 4B-7sl6-L-0.4-10mmpm 68 4B-7sl6-L-0.4-100mmpm 69 4B-7sl6-L-0.4-1000mmpm 70 4B-7sl6-T-0.4-1mmpm 71 4B-7sl6-T-0.4-10mmpm 72 4B-7sl6-T-0.4-100mmpm 73 4B-7sl6-T-0.4-1000mmpm 74 4B-8sl7-L-0.4-100mmpm 75 4B-8sl7-T-0.4-100mmpm 76