Axial Compression Properties of Special-Shaped 3D Tubular Woven Composites

2021 ◽  
Vol 8 (2) ◽  
pp. 18-25
Author(s):  
Jingjing Wang ◽  
Lihua Lyu ◽  
Jing Guo ◽  
Xiaoqing Xiong ◽  
Ying Wang ◽  
...  
Keyword(s):  
Axial Compression ◽  
Functional Relationship ◽  
Basalt Fiber ◽  
Experimental Tests ◽  
Woven Fabrics ◽  
Woven Composites ◽  
Mathematical Equation ◽  
Compression Properties ◽  
Load Displacement ◽  
Vartm Process

Axial compression properties of special-shaped 3D tubular woven composites with basalt fiber filament tows were studied. Special-shaped 3D tubular woven fabrics composites with three different thicknesses were woven on an ordinary loom and fabricated by the vacuum assisted resin transfer molding (VARTM) process. Load-displacement and energy-displacement curves were obtained from experimental tests. Results showed that for special-shaped 3D tubular woven composites, the load and energy absorption were greater with thickness and the compression property improved. Through the analysis of the mathematical equation and correlation coefficient of the load-displacement and energy-displacement relation, the fitting effect of the curves were good. The mathematical equation of the method could be used to simplify the functional relationship between load, energy, and displacement.

scholarly journals Compression properties of three-dimensional I-shaped woven composites with basalt fiber filament tows

2019 ◽  
Vol 14 ◽  
pp. 155892501988468
Author(s):  
Li-Hua Lyu ◽  
Wen-Di Liu ◽  
Jing Guo ◽  
Chun-yan Wei ◽  
Yu-ping Zhao ◽  
...  
Keyword(s):  
Failure Modes ◽  
Shear Failure ◽  
Three Dimensional ◽  
Basalt Fiber ◽  
Morphological Characteristics ◽  
Woven Composites ◽  
Maximum Compression ◽  
Compression Load ◽  
Compression Properties ◽  
Load Displacement

In order to improve the defect of incompleteness, three-dimensional I-shaped fabrics with basalt fiber filaments tows were woven on the semi-automatic loom by reasonable design. Three-dimensional I-shaped woven composites were prepared by the vacuum-assisted resin transfer molding process. The compressive behaviors of three-dimensional I-shaped woven composites with three different heights and thicknesses were studied. Through the evaluation of load–displacement curves and total energy absorption of the three-dimensional I-shaped woven composites, the results indicated when the thickness was fixed to 2 mm, the maximum compression load with height 20 mm raised 522.72 N as against that with height 60 mm and the maximum compression load with thickness 6 mm raised 2571.81 N as against that with thickness 2 mm. Consequently, the compression properties of three-dimensional I-shaped woven composites decreased with the increasing heights of the composites, while increased with the increasing thickness of the composites. Analyzing morphological characteristics of composites after fracture and load–displacement curves of composites, it was concluded that the compression failure modes had brittle fracture of the fiber bundle, cracking of the matrix, and a typical shear failure in the beam (A2). Despite the above-mentioned failure mechanisms, the three-dimensional I-shaped woven composite still had good integrity without delamination.

Effect of Basalt Intraply Fiber Hybridization on the Compression Behavior of Filament Wound Composite Pipes

2021 ◽  
Vol 36 (2) ◽  
pp. 193-204
Author(s):  
Ö. Özbek ◽  
Ö. Y. Bozkurt ◽  
A. Erkliğ
Keyword(s):  
Axial Compression ◽  
Compression Strength ◽  
Basalt Fiber ◽  
Radial Compression ◽  
Compression Tests ◽  
Compression Behavior ◽  
Compression Properties ◽  
Fiber Winding ◽  
Composite Pipes ◽  
Hybrid Carbon

Abstract The current study deals with the effect of basalt fiber hybridization on the compressive properties of composite pipes reinforced with glass fiber and carbon fiber. Hybrid and non-hybrid fiber reinforced pipes (FRPs) were fabricated through wet filament winding technique. Intraply fiber winding structure in which different fiber types were simultaneously wound at the layer was employed for the hybridization. The FRP samples wound by different fiber winding angles (± (40°), ± (55°), ± (70°)) were prepared in order to gain a better insight on the influence of basalt intraply fiber hybridization. The compression properties of FRP samples were experimentally determined by quasi-static compression tests using external parallel-plates for both the axial and radial directions. The non-hybrid carbon FRP pipes showed the maximum axial compression strength in parallel to the highest strength and lowest ductility of carbon fibers, while the minimum axial compression strength was obtained for the non-hybrid pipes reinforced with basalt fibers that, in comparison, exhibit much less strength and higher ductility. The pipes submitted to the axial compression tests predominantly failed due to the development of cracks and buckling along the fiber direction. While the inclusion of basalt fiber reduced the axial compression behavior of the non-hybrid carbon and glass FRP samples, it improved that behavior in the radial compression tests. Delamination was determined as the major failure mode for the damaged FRPs under radial compression. It is found that the incorporation of basalt fiber provides improvements in radial compression properties as opposed to axial compression properties and in the same manner the increment in fiber winding angle makes a positive contribution to radial compression properties.

scholarly journals Axial Compression Experiments and Finite Element Analysis of Basalt Fiber/Epoxy Resin Three-Dimensional Tubular Woven Composites

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2584
Author(s):  
Liming Zhu ◽  
Huawei Zhang ◽  
Jing Guo ◽  
Ying Wang ◽  
Lihua Lyu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Epoxy Resin ◽  
Axial Compression ◽  
Three Dimensional ◽  
Maximum Load ◽  
Woven Fabrics ◽  
Woven Composites ◽  
Woven Composite ◽  
Element Method

In order to avoid the delamination of traditional tubular composite materials and reduce its woven cost, on an ordinary loom, the three-dimensional (3D) tubular woven fabrics were woven with basalt filament tows, and then the 3D tubular woven composites were prepared with epoxy resin by a hand layup process. The wall thickness of the 3D tubular woven composite was thin, and was only 2 mm thick. Through experiments and finite element method (FEM) simulation, the axial compression properties of the material were analyzed. The results show that the material 2 mm thick has good axial compression performance, the maximum load value of the experiment is 10,578 N, and the maximum load value of the finite element simulation is 11,285 N. The error between the two is 6.68%, indicating that the experiment and simulation have a good consistency. The failure mode of the material is also analyzed through finite element method simulation in the paper, thus revealing the failure stress propagation, local stress concentration, and failure morphology of the material. It provides an effective reference for the design and application of the 3D tubular woven composite.

scholarly journals Compressive Strength of Modified FRP Hybrid Bars

Materials ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1898
Author(s):  
Marek Urbański
Keyword(s):  
Compressive Strength ◽  
Modulus Of Elasticity ◽  
Basalt Fiber ◽  
Test Method ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Free Length ◽  
Compression Properties ◽  
Reinforced Polymer ◽  
Frp Bars

A new type of HFRP hybrid bars (hybrid fiber reinforced polymer) was introduced to increase the rigidity of FRP reinforcement, which was a basic drawback of the FRP bars used so far. Compared to the BFRP (basalt fiber reinforced polymer) bars, modification has been introduced in HFRP bars consisting of swapping basalt fibers with carbon fibers. One of the most important mechanical properties of FRP bars is compressive strength, which determines the scope of reinforcement in compressed reinforced concrete elements (e.g., column). The compression properties of FRP bars are currently ignored in the standards (ACI, CSA). The article presents compression properties for HFRP bars based on the developed compression test method. Thirty HFRP bars were tested for comparison with previously tested BFRP bars. All bars had a nominal diameter of 8 mm and their nonanchored (free) length varied from 50 to 220 mm. Test results showed that the ultimate compressive strength of nonbuckled HFRP bars as a result of axial compression is about 46% of the ultimate strength. In addition, the modulus of elasticity under compression does not change significantly compared to the modulus of elasticity under tension. A linear correlation of buckling load strength was proposed depending on the free length of HFRP bars.

Effects of the Stacking Sequence, Material Nature and Addition of an Adhesive Film on the Delamination Resistance of Woven Composite Laminates in Mode I and II

2015 ◽  
Vol 24 (1) ◽  
pp. 096369351502400
Author(s):  
P. Navarro ◽  
J. Aubry ◽  
F. Pascal ◽  
S. Marguet ◽  
J.F. Ferrero ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Composite Laminates ◽  
Woven Fabrics ◽  
Woven Composites ◽  
High Fracture Toughness ◽  
Mode I ◽  
Woven Composite ◽  
High Fracture ◽  
Adhesive Film ◽  
Woven Composite Laminates

Woven composites are well-known for their good transverse properties and for their high fracture toughness. The damage mechanisms leading to delamination in woven composites are identified in mode I and II and are compared with those occurring in unidirectional laminates. The influence of several parameters, including the draping sequence and the fibre / matrix interface on the fracture toughness of woven composite laminates is studied. Pure Mode I and Mode II tests are carried out on several carbon/epoxy and glass/epoxy woven composites configurations and the differences observed are discussed from a fractographic point of view. The study illustrates the high fracture toughness of the composites made of woven fabrics as well the influence of the orientation of the plies, the nature of the fibres and the addition of an adhesive film.

Experimental and Numerical Analysis of FRCM Strengthened Parabolic Tuff Barrel Vault

2019 ◽  
Vol 817 ◽  
pp. 213-220 ◽  
Author(s):  
Martino Bove ◽  
Anna Castellano ◽  
Aguinaldo Fraddosio ◽  
Jacopo Scacco ◽  
Gabriele Milani ◽  
...  
Keyword(s):  
Numerical Study ◽  
Basalt Fiber ◽  
Experimental Tests ◽  
Concentrated Load ◽  
Parabolic Shape ◽  
Masonry Material ◽  
Concrete Damage ◽  
Properties Of Materials ◽  
Masonry Vaults ◽  
Abaqus Model

This work focuses on an experimental and numerical study of a tuff barrel vault first damaged by differential vertical settlements of the abutments without rotations, then reinforced with a FRCM system composed by a fiber-reinforced mortar embedding a basalt fiber net, and finally subjected to a concentrated load on a generatrix (still ongoing). The geometry of the vault (polycentric near parabolic shape) and the masonry material (Apulian tuff) have been chosen in order to be representative of some masonry vaults common in rural constructions of Apulia region; also, a load representative of the infill weight has been applied during all the experimental tests. In parallel to the experiments, numerical simulations by a heterogeneous FE Abaqus model calibrated on the experimentally determined mechanical properties of materials have been performed. This model aims at reproducing the settlement phase and to accurately predict the load bearing capacity of the reinforced structure. To this aim, Concrete Damage Plasticity model has been used for modeling mortar joints and cementitious matrix, whereas tuff bricks have been assumed linearly elastic; finally, the basalt fiber net used in the FRCM reinforced has been described by suitable equivalent elasto-damaging trusses.

Studying the effect of reinforcement parameters on the mechanical properties of natural fibre-woven composites by Taguchi method

2019 ◽  
Vol 50 (2) ◽  
pp. 133-148 ◽  
Author(s):  
Senthil Kumar ◽  
S Balachander
Keyword(s):  
Mechanical Properties ◽  
Process Parameters ◽  
Composite Structures ◽  
Research Work ◽  
Engineering Application ◽  
Areal Density ◽  
Natural Fibre ◽  
Woven Fabrics ◽  
Woven Composites ◽  
Textile Composite

Process optimization is the key task of any engineering application to maximize the desirable output by optimizing the range of process parameters. In this research work, jute composites were fabricated by the hand lay-up method with the aim of optimizing the process parameter such as yarn linear density, fabric areal density and fabric laying angle on the mechanical properties of the textile composite structures using the Taguchi L9 orthogonal matrix. The plain-woven and twill-woven fabrics of Jute fabrics were produced through specialized handloom machine and used as preform for composite production. Epoxy resin was used as the matrix component. Signal-to-noise ratio ratio, analysis of variance and experimental verification of results were analysed. The results showed that fabric laying angle played major role to achieve high mechanical properties of composites and twill-woven structural reinforcement yields higher mechanical properties. Subsequent to this optimal process, parameters have been arrived for all the composites, and finally it was verified through the experimental results.

scholarly journals Bending Properties of Zigzag-Shaped 3D Woven Spacer Composites: Experiment and FEM Simulation

Materials ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1075 ◽  
Author(s):  
Liming Zhu ◽  
Lihua Lyu ◽  
Xuefei Zhang ◽  
Ying Wang ◽  
Jing Guo ◽  
...  
Keyword(s):  
Low Cost ◽  
Impact Resistance ◽  
Fem Simulation ◽  
Basalt Fiber ◽  
Geometrical Model ◽  
Woven Composites ◽  
Bending Properties ◽  
Molding Process ◽  
3D Woven Composites ◽  
Spacer Fabrics

Conventionally laminated spacer composites are extensively applied in many fields owing to their light weight. However, their impact resistance, interlaminar strength, and integrity are poor. In order to overcome these flaws, the zigzag-shaped 3D woven spacer composites were rationally designed. The zigzag-shaped 3D woven spacer fabrics with the basalt fiber filaments tows 400 tex (metric count of yarn) used as warp and weft yarns were fabricated on a common loom with low-cost processing. The zigzag-shaped 3D woven spacer composites were obtained using the VARTM (vacuum-assisted resin transfer molding) process. The three-point bending deformation and effects of damage in zigzag-shaped 3D woven spacer composites were studied both in experiment and using the finite element method (FEM). The bending properties of zigzag-shaped 3D woven spacer composites with different direction, different numbers of weaving cycle, and different heights were tested in experiments. In FEM simulation, the geometrical model was established to analyze the deformation and damage based on the 3D woven composite structure. Compared with data obtained from the experiments and FEM simulation, the results show good agreement and also prove the validity of the model. Based on the FEM results, the deformation, damage, and propagation of stress obtained from the model are very helpful in analyzing the failure mechanism of zigzag-shaped 3D woven composites. Furthermore, the results can significantly guide the fabrication process of real composite materials.

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