SUPERPLASTIC BEHAVIOR OF POLYVINYLIDENE FLUORIDE (PVDF) UNDER DIFFERENT TEMEPRATURES

Joao Marciano Laredo dos Reis¹; Hotton Feliciano Soares¹; Heraldo da Costa Mattos¹

¹ UFF

doi:10.20906/CPS/COB-2015-1192

Resumo

The tensile behavior of Polyvinylidene fluoride (PVDF) under different temperatures was studied. The experiments were conducted under a wide range of temperatures (-5ºC to 130ºC). Temperature greatly influences the mechanical response of PVDF. In particular, the modulus of elasticity and the ultimate tensile strength are found to decrease with increasing temperature. Also, a one-dimensional phenomenological model able to yield a physically realistic description of temperature sensitivity and damage observed in tensile tests that can be used in engineering problems is proposed. Just two tests performed at different constant strain rates are needed to identify the material parameters that appear in the model. The experimental results are presented and compared to model estimations of damage progression and show good agreement.

Palavras-chave: superplastic; PVDF; modeling