Delamination Induced by Low-Velocity Impact and Influence of Water Absorption on Delamination and CAI of FRPs.

Komai, Kenjiro; Minoshima, Kohji; Tanaka, Kazuto

doi:10.1299/kikaia.63.1198

Cited by 5 publications

(1 citation statement)

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“…Indeed, water can penetrate into the composites by three main mechanisms: diffusion of the water through the matrix, capillary along fiber-matrix interface and percolating flow and storage of water in micro-cracks [8]. These diffusion mechanisms generally lead to the following damages in the composites: degradation by a hydrolysis reaction of unsaturated groups within the resin [9,10], interfacial fracture [11][12][13][14], debonding [15] and interlaminar toughness [16][17][18][19][20]. Beyond these considerations, it is well known that water absorption also affects the mechanical behavior of composite materials globally [21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Effect of Fatigue Testing and Aquatic Environment on the Tensile Properties of Glass and Kevlar Fibers Reinforced Epoxy Composites

Menail¹,

Mahi²

2015

J Aeronaut Aerospace Eng

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This paper presents the experimental results of the influence of water ageing after mechanical fatigue on glassfiber composites, compared with Kevlar-fiber composites. The tested specimens were subjected to fatigue during various numbers of cycles (100 to 50000). After that, they were immersed into tap water and simulated seawater for different periods (4, 20 and 40 days). Next, the tensile tests were made on the unaged and aged samples in order to determine the evolution of the strength and stiffness under local interactions of the water absorption and fatigue. The obtained results showed that tensile characteristics were clearly affected by the immersion treatment and fatigue loading. In fact, the residual stiffness and residual strength decreased when the immersion time and cycle number of fatigue increased, indicating that the studied composites have experienced some forms of mechanical damage.

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