Soft materials like rubber, foam, and honeycomb structures are pivotal in various industries, driving economic development. Rubber is essential in automotive tire manufacturing and engine component seals, while foam is used in construction for insulation and shock absorption, and honeycomb structures protect fragile items in packaging. Aerospace relies on these materials for lightweight and robust components, and sports gear and medical devices incorporate them for protection and support. Additionally, electronics benefit from their properties in vibration dampening and insulation. Determining the mechanical properties, such as stress-strain behavior, is crucial before using these materials, but the current standards, the Split-Hopkinson pressure bar (SHPB) and Universal testing machines, are expensive and not readily available. This paper introduces a novel methodology for characterizing soft materials, specifically addressing the intermediate strain rate range. The loading is generated by a drop weight, instrumented with accelerometer. The stress vs. strain behavior is derived from the drop weight’s acceleration profile. The approach avoids the use of strain gauges and can accommodate different specimen sizes, overcoming challenges of the SHPB. The methodology, demonstrated with a Polyurethane test specimen, aligns with evolving value chains, emphasizing efficiency, adaptability, and accuracy. This innovative approach not only addresses technological challenges in soft material testing but also has the potential to stimulate economic development, aligning well with Sustainable Development Goal 9.
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