Strain-rate dependency of bio-based cellular materials under a large range of temperature

Polymeric cellular materials are used in many different application domains such as transport, sport, food, health and energy. Therefore, the conditions of use these represent wide temperature strain-rate ranges. The mechanical behaviour foams demonstrate a strong dependency to it. In order be able predict dependency, its origin has better understood. For this study, bio-based material, agglomerated cork, been chosen evaluate behaviour. visco-elastic material was first studied between −80°C 100°C at frequencies 0.01 Hz 100 Hz. compressive then on large range (from −30°C 100°C) strain rates 4.2 10 −5 s −1 1250 ). A specific set-up finally operate dynamic tests low high temperature. These results were discuss evolution beahviour with environnemental based knowledge constitutive materials.