Structural Damage Detection Dataset: Dynamic Response of Coupled Substructures
Description
This dataset contains dynamic response measurements for Structural Health Monitoring (SHM), focusing on the detection and identification of damage in assembly products. The data is derived from experiments involving two substructures (A and B) that can be dynamically coupled to form an assembly for which the damage is expected to occur in the joints connecting the substructures. The coupling configuration is illustrated in the attached image (Image.jpg). In addition to substructure measurements, the dataset includes measurements from four differently damaged assemblies: - undamaged assembly, - assembly with a 5 mm cut at location J_1, - assembly with a 10 mm cut at location J_1, and - assembly with a 10 mm cut at location J_2. Locations J_1 and J_2 are shown in Image.jpg. The data is stored in the data.h5 file and organized as follows: - The main group is named 'data'. + Within 'data', there are six subgroups: * Groups 'A' and 'B' contain measurements for substructures A and B, respectively. * Four groups for the differently damaged assemblies ('assembly_undamaged', 'assembly_J1_1_4', 'assembly_J1_1_2', and 'assembly_J2_1_2'). + Each subgroup contains measurements of impact force (in Newtons) and response in terms of acceleration (in units of standard gravity), organized as follows: * Groups are named 'r<response ID>_e<excitation ID>', where the number following 'r' denotes the response degree of freedom ID, and the number following 'e' indicates the excitation force application degree of freedom ID. * Each group contains two subgroups, 'response_data' and 'excitation_data', which hold the acceleration and force measurements, respectively. * 'response_data' and 'excitation_data' include up to four subgroups named numerically ('1', '2', etc.), representing repeated measurements, allowing for data averaging. Details regarding the locations and directions of the excitation force application, the locations of the response measurements, and measurement units are stored as attributes of the 'response_data' and 'excitation_data' groups. Both, locations and directions for structures A and B are valid for the coordinate systems, displayed in Image_2.jpg. The coordinate system of the assembly coincides with the coordinate system of the substructure A in its first occurrence (on the left side of the assembly in Image.jpg). Attributes describing the damage state of each assembly group are stored within the respective assembly groups (i.e. groups 'assembly_undamaged', 'assembly_J1_1_4', 'assembly_J1_1_2', and 'assembly_J2_1_2'). Acquisition setup: each acceleration/force measurement was performed within 1s of sampling time with a sampling rate of 51.2 kS/s. This dataset is valuable for researchers and practitioners in SHM, providing comprehensive data for developing and testing algorithms aimed at detecting structural damage based on the dynamic properties of the structure.