Modeling the effective viscoelastic properties of PEEK matrix reinforced by arbitrary oriented short glass fibers

Boris Burgarella , Aurelien Maurel-Pantel (1) , Noël Lahellec , Jean-Luc Bouvard , Noëlle Billon

1 LMA - Laboratoire de Mécanique et d'Acoustique [Marseille]

The aim of this work consists to estimate and model the viscoelastic behavior at small strain of KetaSpire® KT-880 PEEK fiber composites reinforced with short glass fibers. The viscoelastic behaviour of the PEEK matrix is identified from a series of DMA tests at different temperatures. The principle of time-temperature superposition is used to build a master curve in order to identify the parameters of a generalized thirteen-branches Maxwell model. The composite's master curves are constructed by using virtual DMA experiments. These master curves are used to identify a generalized, transversely isotropic Maxwell spectral law. The modulus of each branch of the model are linked to the characteristic time of the branch by a normal distribution function (spectral law), which allows to drastically reduce the number of material parameters. Finally, a meta-model is 2 Burgarella Boris 1 et al. built to estimate the behavior of the composite as a function of the microstructural parameters: fiber volume fraction and fiber orientation distribution function.

Domaines: Mécanique des structures [physics.class-ph]; Mécanique des matériaux [physics.class-ph]; Génie mécanique [physics.class-ph]; Mécanique des solides [physics.class-ph]; Matériaux et structures en mécanique [physics.class-ph]

Boris Burgarella, Aurelien Maurel-Pantel, Noël Lahellec, Jean-Luc Bouvard, Noëlle Billon. Modeling the effective viscoelastic properties of PEEK matrix reinforced by arbitrary oriented short glass fibers. Mechanics of Time-Dependent Materials, 2020, ⟨10.1007/s11043-020-09475-9⟩. ⟨hal-03000114⟩