The Effect of Polycaprolactone Nanofibers on the Dynamic and Impact Behavior of Glass Fibre Reinforced Polymer Composites

Garcia, Cristobal; Trendafilova, Irina; Zucchelli, Andrea

doi:10.3390/jcs2030043

Cited by 38 publications

(43 citation statements)

References 27 publications

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“…This study is focused on the effect of sand particle size on the mechanical properties of similar gypsum cementation materials from the aspects of gypsum hydration reaction mechanism and physical characteristics of sand particle cementation. Meanwhile, the effect of sand particle size on the mechanical properties of similar materials cemented by gypsum is a complex issue, and there are many other influencing factors, including the typical particle size of the cementite [29], the environmental conditions [30,31], and the sand particle gradation [18,[32][33][34][35]. Furthermore, the specific values of the numerical experiments cannot correspond to the laboratory test results one by one, and only reveal the mechanical behavior of similar gypsum materials in the process of compression.…”

Section: Discussionmentioning

confidence: 99%

Effect of Sand Particle Size on Microstructure and Mechanical Properties of Gypsum-Cemented Similar Materials

Guan

Zhang

et al. 2020

Materials

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To identify mechanism of sand particle size effect on the mechanical properties of gypsum cement, 11 grades of sand particles with a size of 0.1–3 mm were used to produce 99 specimens for uniaxial compression and permeability coefficient testing. Based on this, the distribution characteristics of internal stress and horizontal displacement are discussed using the numerical analysis. The results obtained show that the sand particle size effect on the uniaxial compressive strength of similar materials is negatively correlated within the range from −16.51% to 49.79%. SEM observations imply that, in the case of small particle sizes, gypsum crystals develop into denser needle-like structures, while for larger particle sizes, they are mostly loose lamellar structures. Permeability tests indicated that the larger the sand particle size, the greater the permeability, indicating that the internal pore connectivity is better, and the crevices are easier to penetrate when the specimen is compressed. Numerical simulations indicated that the larger the particle size, the larger the extreme deformation value of the specimen in the horizontal direction, and the more uneven the deformation distribution. In addition, specimens with larger particle sizes had a larger total area, where the tensile stress exceeded the ultimate tensile strength, and were more prone to tensile failure.

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Section: Discussionmentioning

confidence: 99%

Effect of Sand Particle Size on Microstructure and Mechanical Properties of Gypsum-Cemented Similar Materials

Guan

Zhang

et al. 2020

Materials

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“…Evaluations of the dynamic behavior and delamination resistance of GFRP composites using nylon nanofibers showed improved damping ratios and enhanced inter-laminar shear strength, due to the binding of the nanofibers. [33][34][35].…”

Section: Manufacturing Of Steel/gfrp Hybrid Panelsmentioning

confidence: 99%

Mechanical and Fracture Properties of Steel/GFRP Hybrid Panels for an Improved Moveable Weir after Exposure to Accelerated Natural Environmental Conditions

et al. 2019

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This study evaluated the performance of a hybrid panel in an improved moveable weir after exposure to accelerated environmental climate conditions. When exposed to a river environment, corrosion problems on improved moveable weir steel panels can occur. To address this, a hybrid panel with structure layering glass fiber-reinforced polymer (GFRP) panels on both sides of the steel panel was used. The steel was, therefore, not exposed to the outside. However, this hybrid panel is a structure that uses a mixture of two materials with different properties and there is the possibility of performance degradation when the GFRP composite material, i.e., the structure that wraps around the bond interface, and the steel panel are exposed to a river environment. Thus, we evaluated the durability of the hybrid panels by repeated exposure to long-term high temperatures, dry–wet environmental cycling, long-term freezing, and freeze–thaw cycling in an accelerated climate deterioration environment. In the flexural tests, the surface processing of the steel panel was shown to be important, with sand-blasted test specimens showing higher flexural strength. For the control specimens, the flexural strength decreased as the thickness of the GFRP panels increased. However, for the sand-blasted specimens, the flexural strength increased as the thickness of the GFRP panels increased. After exposure to accelerated climate deterioration, the flexural strength tests showed that the residual strength increased with panel thickness and that the residual strengths were greater for specimens incorporating sand-blasted steel panels. The results of our testing show that hybrid panels incorporating sand-blasted steel were adequate for use in improved moveable weirs.

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“…During these few decades, the carbon fiber reinforced polymer (CFRP) stood out from many strengthening materials for its numerous advantages, such as a high strength to weight ratio, corrosion and fatigue resistance [1][2][3][4][5]. At present, the most popular way to practically apply this material in flexural strengthening is to externally bond the FRP plate (or sheet) on the tension face of the bending member.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Fatigue Debonding Growth in FRP–Concrete Interface

et al. 2020

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An externally bonded fiber reinforced polymer (FRP) plate (or sheet) is now widely used in strengthening bending members due to its outstanding properties, such as a high strength to weight ratio, easy operating, corrosion and fatigue resistance. However, the concrete member strengthened by this technology may have a problem with the adhesion between FRP and concrete. This kind of debonding failure can be broadly classified into two modes: (a) plate end debonding at or near the plate end, and (b) intermediate crack-induced debonding (intermediate crack-induced (IC) debonding) near the loading point. The IC debonding, unlike the plate end debonding, still needs a large amount of investigation work, especially for the interface under fatigue load. In this paper, ten single shear pull-out tests were carried out under a static or fatigue load. Different load ranges and load levels were considered, and the debonding growth process was carefully recorded. The experimental results indicate that the load range is one of the main parameters, which determines the debonding growth rate. Moreover, the load level can also play an important role when loaded with the same load range. Finally, a new prediction model of the fatigue debonding growth rate was proposed, and has an excellent agreement with the experimental results.

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The Effect of Polycaprolactone Nanofibers on the Dynamic and Impact Behavior of Glass Fibre Reinforced Polymer Composites

Cited by 38 publications

References 27 publications

Effect of Sand Particle Size on Microstructure and Mechanical Properties of Gypsum-Cemented Similar Materials

Effect of Sand Particle Size on Microstructure and Mechanical Properties of Gypsum-Cemented Similar Materials

Mechanical and Fracture Properties of Steel/GFRP Hybrid Panels for an Improved Moveable Weir after Exposure to Accelerated Natural Environmental Conditions

Experimental Investigation of Fatigue Debonding Growth in FRP–Concrete Interface

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