Mechanical test on different elastomer materials based on the ASTM D412-16 standard

Aim: The main goal of conducting the mechanical tensile tests was to produce non-linear stress-strain curves for input data in the Ansys Workbench software. These curves played an important role in the accurate analysis of the mechanical behavior of the Finite Element Model (FEM) of the Hybrid III 5% Female ATD lumbar spine prototype. In addition, these curves evaluated the suitability of elastomer materials for manufacturing the lumbar spine prototype.
Method: Fourty-five Mechanical tensile tests were performed on five different elastomer materials (NR60, EPDM60, NEO60, CCP60, and CCP80) based on the ASTM D412-16 standard at three different strain rates including the standard strain rate (0.32 or =8mm/s), moderate strain rate (0.64 or =16mm/s), and high strain rate (4 or =100mm/s). Samples with standard and moderate strain rates were taken to failure using the MTS Insight 2 tensile testing machine. However, samples were not taken to failure in high strain rate testing due to the limite..., Mechanical tensile tests were conducted to define nonlinear stress-strain curves and assess the suitability of elastomer materials for the Hybrid III 5% Female ATD lumbar spine prototype. These elastomer materials include the Natural Rubber 60±5 shore A (NR60), Ethylene Propylene Diene Monomer rubber 60±5 shore A (EPDM60), Neoprene Rubber 60±5 shore A (NEO60), Cold Castable Polyether 60±5 shore A (CCP60), and Cold Castable Polyether 80°±5° shore A (CCP80). Mechanical tensile tests were performed based on procedures in ASTM D412-16 standard. Tension samples were prepared in a dog bone geometry (Die C). Width and thickness were measured for each specimen. The gauge length of each sample was considered 25±0.25mm in mechanical tests. Thirty tensile tests at the standard (0.32 or =8mm/s) and moderate (0.64 or =16mm/s) strain rates and fifteen tensile tests at high (4 or =100mm/s) strain rate, were conducted by the MTS Insight 2 and MTS 858 Bionix tensile testing machines, respectively. Sampl..., , # Mechanical test on different elastomer materials based on the ASTM D412-16 standard

Different elastomer materials underwent mechanical testing based on ASTM D412-16 standard using different strain rates to obtain stress-strain curves. These curves provided good information on material properties, such as strength and Strain Rate Sensitivity (SRS). In addition, these curves were used in the Ansys Finite Element Model to assess the mechanical responses of the Hybrid III 5% Female ATD lumbar spine prototype in different boundary conditions. Finally, the results of the Ansys Finite element simulation contributed to selecting a suitable material for manufacturing the lumbar spine prototype.

## Description of the data and file structure

Data Files: Data from all mechanical tests were collected in a Microsoft Excel file (.xlsx).

Supplemental Files: Figures of mechanical tests for each sample are individually plotted and detailed information is written in each Figure's caption. All Figu...