Environmental degradation of advanced fibre hybrid composites

• Autorzy: Imielińska K.
• Języki publikacji: EN

Abstrakty

EN

Water absorption, water-induced degradation of flexural properties and failure mechanisms were investigated in hybrid aramid-glass fibre-reinforced/epoxy 4 ply laminates. After extended periods of service, significant water absorbtion (ca. 3,5 wt%) resulted in deterioration of flexural strength by ca 20% and of the interlaminar shear strength by ca. 30%. Following water immersion, under flexural loading aramid-glass fibre reinforced/epoxy composites failed by aramid fibre buckling and fibre/matrix interfacial damage propagation, whereas the principal failure mechanisms in glass fibre composites are single or multiple ply and fibre fractures. Plots showing changes in stress regimes responsible for damage development in dry/wet specimens, failure maps of stress versus % water/failure mechanism, are presented.

Słowa kluczowe

EN

polymer composites; laminates; durability; scanning electron microscopy (SEM)

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2007
• Tom: Vol. 7, nr 2(12)
• Strony: 115--120
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Imielińska K.

• Gdańsk University of Technology, Mechanical Faculty, Department of Materials Science and Engineering, Gdańsk, Poland

Bibliografia

• [1] Turnbull A. and Broughton W.R: Environmental degradation of polymers and polymer composites. Proc. Conf. EDEM, Bordeaux 1-307.2003.
• [2] Imielińska K.: Degradation and damage of advanced laminate polymer composites due to environmental effects and law velocity impact, Wydawnictwo Politechniki Gdańskiej, Gdańsk 2005.
• [3] Springer G.S.: Environmental Effects, In: Environmental effects on composite materials, ed. Springer G.S.: Technomic, Basel, 1988, Ch.l, 1-32.
• [4] Akay M., Kong Ah Mun., Stanley A.: Influence of moisture on the thermal and mechanical properties of autoclaved and oven-cured Kevlar-49/epoxy laminates, Composites Science and Technology 57 (1997), pp. 565-571.
• [5] Imielińska K., Guillaumat L: The effect of water immersion ageing on low- velocity impact behaviour of woven aramid-glass fibre/epoxy composites, Composites Science and Technology, 64 (2004), pp. 2271-2278.
• [6] Gopalan R., Rao RM., Murthy M.V.V. and Dattaguru B.: Diffusion studies on advanced fibre/ epoxy composites, In: Environmental effects on composite materials, ed. G.S. Springer, Technomic, Basel, (1988), Ch.7, pp. 96-106.
• [7] Selzer R. and Friedrich K.: Mechanical properties and failure behaviour of carbon fibre-reinforced polymer composites under the influence of moisture, Composites 28A Part A, (1997), pp. 595-604.