Stress Corrosion Cracking of Basalt/Epoxy Composites under Bending Loading

Abstract

The purpose of this research is to study the stress corrosion behavior of basalt/ epoxy composites under bending loading and submerged in 5% sulfuric acid corrosive medium. There are limited numbers of research in durability of fiber reinforced polymer composites. Moreover, studies on basalt fibers and its composites are very limited. In this research, mechanical property degradation of basalt/epoxy composites under bending loading and submerged in acidic corrosive medium is investigated. Three states of stress, equal to 30%, 50% and 70% of the ultimate strength of composites, are applied on samples. High stress states are applied to the samples to accelerate the testing procedure. Mechanical properties degradation consists of bending strength, bending modulus of elasticity and fracture energy of samples are examined. Also, a normalized strength degradation model for stress corrosion condition is presented. Finally, microscopic images of broken cross sections of samples are examined.

Hybridization effects on charpy impact behavior of basalt/aramid fiber reinforced hybrid composite laminates

“…Hence, the use of basalt fibers for the fabrication of composite materials and the determination of their mechanical properties have attracted considerable attention in recent years. The tensile, compression, flexural, impact, creep, abrasive wear, fracture, and interlaminar shear strength properties of basalt fiber reinforced composites have been explored in a number of researches , and there are several numbers of researches related with the incorporation of basalt fibers with the fibers of other reinforcement materials, such as glass , carbon , nylon , aramid , hemp , jute , glass/flax , glass/hemp , flax/hemp . Compared to those of neat glass, carbon, nylon, jute, hemp and aramid fiber composites, improvements in impact strength and energy absorption were reported for the basalt/glass , basalt/carbon , basalt/nylon , basalt/jute , basalt/hemp , and basalt/aramid hybrid composites, respectively.…”

Fatigue resistance of basalt fibers-reinforced laminates

“…Because of these properties, BFs resulted to be attractive for several technological applications, such as geopolymeric concretes, 12 pressure pipes, 13 fibrous insulators, 14 protective clothes, [12][13][14][15][16] and fire-blocking material. 7,17 Over the last years, BFs have been proposed for the preparation of structural composites in combination with various polymer matrices such as unsaturated polyester, 11 vinylester, [18][19][20][21][22] epoxy, [22][23][24][25][26][27][28][29][30][31][32] phenol formaldehyde, [33][34][35] polyimide, 36 polysiloxane, 37,38 polypropylene, [39][40][41][42][43] polycarbonate, 41 poly(ethylene terephthalate), 44 poly(butylene terephthalate), 45 polyamide, 46,47 starch resin, 48,49 and polylactic acid. 50 Moreover, BFs have also been ...…”

An analytical constitutive model for progressive damage analysis of three‐dimensional braided composites

“…The relation between fiber stress r f and matrix stress r m in a fiber-reinforced composite is usually established by a bridging model [18][19][20][21]. As is shown in Fig.…”

“…A precise analytical constitutive model for 3D braided composites is established in this study through an improved meso-mechanical method. A bridging model [15,16,[19][20][21] and the homogenization theory [22][23][24][25] are used; yarns and the out-of-yarn matrix are modeled by a 3D Linde failure criterion [10,[26][27][28] and an extend Drucker-Prager criterion [29,30], respectively. Thus, the constitutive model is developed and expressed as an analytical equation set.…”