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Composites: Mechanics, Computations, Applications: An International Journal
ESCI SJR: 0.193 SNIP: 0.497 CiteScore™: 0.39

ISSN Печать: 2152-2057
ISSN Онлайн: 2152-2073

Composites: Mechanics, Computations, Applications: An International Journal

DOI: 10.1615/CompMechComputApplIntJ.2019029771
pages 333-361

MECHANICAL PROPERTIES AND DIFFUSION BEHAVIOR OF CARBON FIBER-REINFORCED PEEK ON EXPOSURE TO HEAT AND WATER

Toufik Saoudi
Laboratoire Génie des Matériaux, Ecole Militaire Polytechnique, BP17C, Bordj El Bahri, 16046 Alger, Algeria
Mohamed El Amine Belouchrani
Laboratoire Génie des Matériaux, Ecole Militaire Polytechnique, BP17C, Bordj El Bahri, 16046 Alger, Algeria; Ecole Nationale Supérieure de Technologie, Dergana, Alger, Algeria

Краткое описание

In the present work, the effect of thermal exposure on the mechanical properties of carbon-PEEK (polyether-ether-ketone) composites was studied. Subsequently, a parametric study was carried out to analyze the influence of the temperature range on the mechanical behavior of this composite, where the exposure temperature was higher than the glass transition temperature Tg and lower than the melting temperature Tm of the matrix. Meanwhile, the effect of water aging on the mechanical properties of this composite was performed. For this purpose, composite samples were immersed in tap and salt water at room temperature. Sealed and unsealed samples were used to estimate their 1D and 3D diffusion parameters based on the Fick's model using an optimization algorithm. The diffusion coefficient of the resin specimens aged in tap and salt water were 2.36 × 10-6 mm2/s and 0.853 × 10-6 mm2/s, respectively. The difference between M of the composite specimens in the x and y directions increases to about 7% in salt water and up to about 19% in tap water. The as-prepared composites exhibit an increase in the ultimate strain by about 40% at 25°C after 15 days of immersion in tap water which decreased by about 15% at 330°C after 90 days, whereas the flexural modulus decreases after immersion for 45 days with a value of ~ 5% and ~ 25% at temperatures of 330°C and 200°C, respectively.

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