2026-10-14T17:07:01Z https://www.scidb.cn/oai

10.57760/sciencedb.44867 2026-08-20T16:21:49Z

2026-08-20 Experimental Impact Test Data of a Composite Panel Subjected to Drop-Weight Impact: Time, Acceleration, Impact Force, Velocity, Displacement, Kinetic Energy, and Absorbed Energy doi:10.57760/sciencedb.44867 en Data origin The dataset contains experimental impact test data obtained from a composite panel subjected to a drop-weight impact test. The impact event was recorded using an instrumented data acquisition system.Experimental conditions According to the spreadsheet, the test involves a drop-weight impact configuration with an impactor mass of 5.549 kg and a nominal drop height of 0.50 m. The spreadsheet also includes reference parameters used for calculating the theoretical impact velocity and initial impact energy.Data acquisition system The experimental signals were recorded using the QuickDAQ data acquisition system at a sampling frequency of 4000 Hz.Original experimental signals The dataset includes the experimentally recorded signals associated with:time;accelerometer output;electrical signal recorded by the corresponding acquisition channel.The acceleration signal is initially expressed in g, while time is expressed in s.Acceleration conversion The measured acceleration in units of g is converted into m/s² using the standard gravitational acceleration of 9.81 m/s².Time interval calculation The time increment between consecutive measurements is calculated as:Δt=ti​−ti−1​The relative and cumulative time are subsequently determined from the recorded time increments.Impact force calculation The acceleration data are combined with the impactor mass to calculate the impact force according to:Fi​=mai​where Fi​ is the impact force in N, m is the impactor mass in kg, and ai​ is the acceleration in m/s².Impactor velocity calculation The impactor velocity is determined by numerical integration of the acceleration with respect to time. The spreadsheet includes both incremental velocity and cumulative velocity values.Displacement calculation The incremental displacement is calculated from the velocity, acceleration, and corresponding time interval. The cumulative displacement of the impactor is subsequently obtained.Work and energy calculation The energy contribution associated with the applied force and displacement is calculated for each data interval according to:ei​=Fi​Xi​The cumulative energy is then obtained from the individual energy contributions.Kinetic energy calculation The change in kinetic energy is calculated from the impactor mass and the change in velocity between consecutive measurements:ki​=21​m(Vi2​−Vi−12​)The cumulative kinetic energy is also determined throughout the impact event.Initial impact energy The theoretical initial impact energy is calculated from the impactor mass, gravitational acceleration, and drop height:E0​=mghThe theoretical impact velocity associated with free fall is calculated as:V0​=2gh​Absorbed energy calculation The energy absorbed by the composite panel is determined from the difference between the initial impact energy and the remaining kinetic energy of the impactor. The corresponding calculated variable is identified in the spreadsheet as absorbed energy (Ea).Data columns and variable definitions The principal columns and calculated variables included in the spreadsheet are:Time: recorded time;G(i): measured acceleration;t(i): recorded time;Δt: time increment between consecutive measurements;T(i): cumulative relative time;g(i): acceleration converted to m/s²;w: weight-related impactor parameter;m: impactor mass;F(i): impact force;v(i): incremental velocity;V(i): impactor velocity;x(i): incremental displacement;X(i): cumulative displacement;e(i): incremental energy;E(i): cumulative energy;k(i): incremental change in kinetic energy;K(i): cumulative kinetic energy;|K(i)|: absolute value of kinetic energy;|E|-|K|: difference between the calculated energy and kinetic energy;Eo: initial impact energy;Ea: absorbed energy.Scientific value of the dataset The dataset provides experimental and calculated information for characterizing the dynamic response of a composite panel subjected to drop-weight impact. It enables the analysis of acceleration, impact force, velocity, displacement, kinetic energy, initial impact energy, and absorbed energy during the impact event. The data can therefore be used to evaluate the impact response and energy absorption capability of composite structures.Interpretation of experimental and derived data The initial columns primarily contain experimentally recorded measurements, whereas the subsequent columns contain derived quantities calculated from the experimental signals, impactor properties, and test conditions.Data file organization The dataset is provided in Microsoft Excel format (.xlsx) and contains a worksheet named “Plate-4 resul”. The worksheet includes the experimental acquisition data, impact parameters, calculated variables, and the equations or calculation procedures used to obtain the derived quantities. Aramid Fibers; Cohesive Theory; Delamination; Composite Patrick Townsend PUBLIC https://creativecommons.org/licenses/by-nc/4.0/ dataset Science Data Bank