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Communication Dans Un Congrès Année : 2004

Damage and fracture of PVDF at 20°C

Jacques Besson
Lucien Laiarinandrasana
Gilles Hochstetter
  • Fonction : Auteur

Résumé

Flexible oil pipelines are multilayered structures used for the transport of crude oil or natural gas from the seabed to the surface in offshore oil fields. Because of severe service conditions, composite structure made of metallic and polymeric layers must be used. PVDF is a good candidate as it accommodates tensile and flexural deformations and guarantees watertightness. The present paper focuses on the mechanical properties of PVDF at 20°C. Several specimens with different geometries were tested: notched specimen and cracked specimen under tension. Fracture surfaces were examined to determine fracture mechanisms. Based on mechanical testing and microscopic observations, a modified Gurson-Tvergaard-Needleman model for semi-crystalline polymers is proposed. The model allows to represent the non-linear behavior and the cracking of polymer structures.
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Dates et versions

hal-00165054 , version 1 (04-12-2013)

Identifiants

  • HAL Id : hal-00165054 , version 1

Citer

Mélanie Challier, Jacques Besson, Lucien Laiarinandrasana, Roland Piques, Gilles Hochstetter, et al.. Damage and fracture of PVDF at 20°C. Advanced fracture mechanics for life and safety assessments - ECF 15, Aug 2004, Stockholm, Sweden. 8 p. ⟨hal-00165054⟩
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