Using Dynamic Mechanical Analysis to Evaluate Shoe Floor Friction Performance

Dynamic Mechanical Analysis and its Effects

Dynamic mechanical analysis (DMA) is an important tool for evaluating the friction performance of shoe-floor interactions. DMA enables researchers to measure the energy absorption of a material and the loss factor tan() which is a ratio of energy lost to energy stored. This is particularly important for slip-resistant shoes, as hysteresis friction is unaffected by the presence of liquids and can provide friction even in the most slippery conditions.

Recent research by the University of Pittsburgh has explored the relationship between DMA and shoe-floor friction. Experiments were conducted with a STEPS device under biofidelic dynamic conditions and canola oil was used to simulate a slippery condition. The results showed that the coefficient of friction is affected by the material formulation, temperature, and load cycling frequency. It was also found that the topographical features of a floor surface and the material properties of the shoe surface interact in a complex manner.

In conclusion, DMA is a powerful tool for assessing the friction performance of shoe-floor interactions. By understanding the relationship between DMA and shoe-floor friction, researchers can gain insights into the materials and design features that can be used to improve slip resistance and prevent injuries during high-impact activities.

Video 01: Dynamic Mechanical Analyser DMA