COMPOSITES SCIENCE AND ENGINEERING

Performance investigation of epoxy thermal conductive composite based on nano boron nitride-polyurethane/fiberglass three-dimensional structure

XU Peijun, WANG Qian, ZHENG Xin, LI Hanyu, GUO Xinliang, LIU Ronghai

2024, 0(11): 5-13. DOI: 10.19936/j.cnki.2096-8000.20241128.001

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Fiber-reinforced epoxy resin composite is widely employed in aerospace and other industries due to its low specific gravity, high specific strength, low curing shrinkage, and excellent corrosion resistance. However, the demand for thermal conductivity in this material has become increasingly stringent due to its special processing techniques and the heat dissipation requirements of the electronics and power industries. In this study, flame-retardant polyurethane open-cell foam (PUF) was used as a template; and nano boron nitride (BNNS) was introduced to modify this material. A low-loading boron nitride-polyurethane/fiberglass/epoxy thermal conductive composite was prepared using an impregnation-hot pressing method to investigate the effects of different BNNS contents on the thermal and electrical properties of the composite material. The results show that BNNS grows in situ on the three-dimensional skeleton surface of PUF, and as the BNNS content increases, the thermal performance of the composite material significantly improves. When the content of boron nitride nanosheets is 1vol%, the thermal conductivity of the composite material reaches 0.53 W/(m·K), which represents a 103% increase, while the coefficient of linear expansion decreases by 77.6%. With a BNNS content of 0.5vol%, the glass transition temperature of the composite material increases by 13.5 ℃, and it exhibits optimal thermal stability and mechanical properties. Moreover, thanks to the excellent insulation properties of boron nitride, the volume resistivity of the composite material is elevated to 7.2×10¹⁵ Ω·cm, and its arc resistance is significantly enhanced.

Preparation and properties of SiO₂ aerogel with sodium metasilicate as precursor

XU Changwei, SUN Shenhan, ZHANG Zhonglun, WANG Mingming

2024, 0(11): 14-21. DOI: 10.19936/j.cnki.2096-8000.20241128.002

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In this experiment, sodium silicate was used as the silicon source to prepare SiO₂ aerogel by drying under normal pressure. The influence of different sodium silicate mass fraction and chemical desiccant content on the vibrating density, specific surface area, pore volume and pore diameter, microstructure and other indicators of SiO₂ aerogel was mainly explored. The best washing efficiency was determined and the effect of Na⁺on the performance of aerogels was analyzed. The results show that when the mass fraction of sodium silicate is 7wt%, the prepared aerogel has excellent performance, specifically, the gel time is 3 min; the compaction density can be as low as 0.209 g/cm³; the higher porosity is 90.5%. When n(DCCA)∶n(Si)=2∶1, the aerogel has a larger specific surface area of 531.69 m²/g and a higher total pore volume of 2.51 ml/g, and the pore structure is the most uniform. When removing Na⁺ through water washing, the washing temperature should be controlled at around 50 ℃, and the water consumption should be controlled at around 15 times the amount of accumulated water. Four washes can remove 97.24% of the original Na⁺. Finally, it is found that the residual Na⁺ will have a negative impact on the density and thermal conductivity of SiO₂ aerogels, so the process of removing Na⁺ is very important.

Buckling and post-buckling analysis of glass/carbon hybrid fiber composite stiffened plates

SUN Shuangshuang, WANG Xiugang, WANG Qiangqiang

2024, 0(11): 22-33. DOI: 10.19936/j.cnki.2096-8000.20241128.003

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The glass/carbon hybrid fiber composite reinforced panel was studied. The buckling load and ultimate bearing capacity of the stiffened plates are calculated by the finite element software ABAQUS, and the effects of reinforcement section form, number of reinforcements and size of reinforcements on the buckling load of the composite stiffened plates are discussed, and the load-displacement curves of the structure and the damage failure modes during post-buckling arestudied. The results show that the I-shaped reinforcement method is better than the J-shaped and T-shaped reinforcement methods. The buckling resistance of the glass/carbon fiber sandwich composite reinforced panel is better than that of the interlayer hybrid composite reinforced panel under the same reinforcement method. The buckling load of the structure increases with increasing the number of reinforcement bars in all three reinforcement methods, and the lifting efficiency is the highest when the number of reinforcement bars is 3; the height of 10 mm has the highest efficiency for the buckling resistance of the structure, while the width of the upper edge and the width of the lower edge have less influence on the buckling load. In addition, the failure modes of post-buckling are mainly of tensile damage failure of the matrix and compressive damage failure of fibers, and the damage area and trend are mainly related to the laying angle and laying sequenc of fibers.

Equivalent stiffness of composite sinusoidal corrugated panels

WANG Houbing, QU Tianjiao, CHENG Linan, WEI Jingchao, LI Xinxiang, ZHU Qiang

2024, 0(11): 34-42. DOI: 10.19936/j.cnki.2096-8000.20241128.004

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Based on the homogenization theory of composites, carbon fiber reinforced polymer(CFRP) sinusoidal corrugated panels were equivalent to orthogonal anisotropic plate. According to the principle of strain energy conservation, a method for each stiffness component in the equivalent orthogonal anisotropic plate stiffness matrix was established. Using the finite element method, a representative element model of composite sinusoidal corrugated panels was established. Based on the constitutive equation of laminates, six boundary conditions were constructed to verify the theoretical method of stiffness components. The verification shows that the theoretical results have good consistency with the finite element simulation results. The influence of amplitude and wavelength, two geometric parameters controlling the shape of sinusoidal corrugated panels, on the stiffness of the corrugated panels was studied using a validated stiffness method. The equivalent stiffness of a corrugated panel was compared with the stiffness of its laminated plate. The research results show that the influence of amplitude and wavelength on the stiffness component of corrugated panels is nonlinear; compared to laminated plates, the tensile stiffness of corrugated direction is significantly reduced, while the bending stiffness in the vertical corrugated direction is significantly increased.

Random vibration fatigue life prediction of composite laminates based on successive ply failure mode

SHA Zixiang, JIAN Yueao, CAI Dengan, ZHOU Guangming

2024, 0(11): 43-49. DOI: 10.19936/j.cnki.2096-8000.20241128.005

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The random vibration fatigue life of composite laminates was studied by combining experimental and simulation methods. Vibration fatigue tests were conducted on composite laminates using a vibration table, and the natural frequency of the laminates was monitored and tracked in real-time using a laser vibration meter to obtain the random vibration fatigue life of the laminates. The finite element numerical analysis model is established. Under the random excitation, the equivalent stress power spectral density function of the random vibration of the structure is obtained. Combined with the Dirlik probability density function, the fatigue life of the laminated plate in the case of single-layer failure is obtained. The failure process of the laminated plate is simulated as the process of stiffness degradation layer by layer, continuous redistribution of stress, continuous accumulation of damage, and final overall failure. The result indicates that the error between the finite element calculation life results and the vibration fatigue test results is within the allowable range of engineering. This article can provide a feasible method for further experimental research on vibration fatigue life.

A method for strength analysis of bolted joint of composite laminates

NI Kaiqiang, MENG Maomao, XU Yixin

2024, 0(11): 50-55. DOI: 10.19936/j.cnki.2096-8000.20241128.006

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A development method of user defined element based on ABAQUS platform is proposed. A 2D FE model established using this method can simulate the nonlinear mechanical behavior of composite bolted joint. By fitting the load-displacement curve of the single bolted joint, the element behavior of user defined element are determined, which is applied to a two-dimensional finite element model of the multi-bolted joint to study the distribution of the bolt loads and the ultimate strength of the joint. Compared with the test results, the model results can accurately predict the distribution of bolt loads, damage evolution and ultimate strength of multi-bolted joint. This method has reliable results and high computational efficiency, and is suitable for engineering calculation and analysis of multi-bolted joint of composite laminate.

Study of PPU in-situ closed synthesized phenolic resin and its damping properties

ZHANG Hongying, XIA Shaoling, LIU Cong, PEI Yunliang, GUO Yu

2024, 0(11): 56-61. DOI: 10.19936/j.cnki.2096-8000.20241128.007

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PPU-modified PF was successfully synthesized by introducing polypropylene urethane prepolymer (PPU) into phenolic resin (PF) by in situ closure method using phenol and formaldehyde as raw materials. The chemical structures and properties of the modified resins and PPU were investigated by infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC), the effects of PPU additions on the mechanical properties of modified resins were investigated by means of an electronic universal testing machine and a single-arm pendulum impact testing machine. The fracture surface morphology was also analyzed by scanning electron microscopy (SEM), and the thermal and damping properties of the modified resins were also tested by thermogravimetric analysis (TG) and dynamic thermomechanical analyzer (DMA) instrument. The results show that as the PPU addition increases, the mechanical properties of the modified resin and the T_g initially increase and then decrease, and the mechanical properties of the modified resin are optimal at 10% PPU addition with an obvious toughening effect. The damping properties of all PPU modified phenolic resins are significantly improved.

Thermal insulation design and analysis of composite protective box

QIN Zikai, QIU Rui, CAO Qinglin, GUO Ping’an

2024, 0(11): 62-68. DOI: 10.19936/j.cnki.2096-8000.20241128.008

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In response to a steel outdoor protective enclosure for certain outdoor equipment, referencing the national military industry standard, a “fiberglass+polyurethane+fiberglass” composite sandwich structure enclosure is designed. This design takes into account the variations in ambient temperature and solar radiation over time, as well as the influence of natural convection due to wind speed on heat dissipation. Based on existing experimental data, the effectiveness of the transient analysis method is validated. Subsequently, a transient thermal analysis is conducted on the outdoor enclosure, followed by optimizing the enclosure’s wall thickness. Ultimately, compared to a metal enclosure, the maximum internal air temperature inside the composite enclosure is reduced from 78 ℃ to 45 ℃, resulting in a reduction of 41.6%. This reduction meets the thermal insulation design requirement of keeping the internal air temperature below 50 ℃. Additionally, a weight reduction of 10.6% is achieved.

Study on hierarchical optimized design of structural topology and layer for the wind turbine blade

WANG Quan, XIA Wei, YANG Jianzhong, XU Tangjie, WANG Fengyun

2024, 0(11): 69-75. DOI: 10.19936/j.cnki.2096-8000.20241128.009

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In response to the current issue of the independent design of the topology structure and internal layer parameters of large-scale wind turbine blades, which hinders the maximum reduction of blade weight, this paper proposes a hierarchical optimization strategy for the design of wind turbine blade structure topology and layer parameters. Taking a 5 MW wind turbine blade as the optimization target and considering 7 extreme load cases, the blade’s topology structure is optimized based on the density method. The results of the first-level optimization show that the blade possesses characteristics such as asymmetric main beams and offset webs. Subsequently, treating the topology structure parameters and material layer parameters as second-level optimization variables, with the minimization of blade weight as the optimization objective and the Tsai-Wu’s failure factor, blade tip displacement, and natural frequency as constraints, a particle swarm algorithm is employed to jointly optimize the blade’s topology structure and layer parameters. The results indicate that, compared to the reference blade and while satisfying the blade’s structural strength and deformation requirements, the blade weight is reduced by 12.1% and the blade tip displacement is reduced by 9.5%. This study holds significant reference value for the lightweight design of wind turbine blades.

Effect of ultra-thin UHMWPE fiber insertion on the mechanical properties of carbon fiber laminates

ZONG Wenbo, ZHANG Zhuqing, WU Yixiao, ZHANG Juntao, LIANG Xia, WU Haihong

2024, 0(11): 76-81. DOI: 10.19936/j.cnki.2096-8000.20241128.010

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In order to improve the ductility of ultra-thin carbon fiber composites unidirectional laminates (UDLs), both CF/UHMWPE hybrid and ultra-thin carbon fiber UDLs with the same thickness were prepared. Their mechanical properties were tested, and the micro-morphology of the specimens was observed after tensile fracture in this paper. The results show that the average tensile strength of CF/UHMWPE hybrid UDL reaches 1 695 MPa, and the UDL presents a capacity withstanding 1 560 MPa load for 10 s after tensile damage occurred. Compared to ultra-thin carbon fiber laminates, although the average tensile strength of the hybrid UDLs is reduced by 11.6%, their average elongation is increased by 7.1%. The hybrid specimens do not develop brittle fracture damage during tensile testing, and the splitting phenomenon of the UDLs under macroscopic morphology is reduced. The decrease in tensile strength of the hybrid UDL is related to the lower volume fraction of carbon fibers, but the UHMWPE fibers, which were used as the inserted phase, increased the elongation of the hybrid UDL because of its good ductility. Microstructurally, the inserted ultra-thin UHMWPE fiber layer inhibits the generation and expansion of the cracks in the UDL and suppresses the brittle fracture of the adjacent carbon fiber layers, which improves the overall ductility of the hybrid UDL. The experimental results provide the basis for designing highly ductile hybrid composites further.

Orthogonal test of a new type of closed compound filament wound CFRP stirrup

SONG Yanchao, JIANG Jitong

2024, 0(11): 82-87. DOI: 10.19936/j.cnki.2096-8000.20241128.011

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A new type of CFRP stirrup production process was proposed, and a new type of closed composite wire winding CFRP stirrup was designed and manufactured, which is characterized by direct winding of carbon fiber composite wire, avoiding the problem of weak tensile strength of stirrup caused by folding at the bend, and improving the performance of traditional pultrusion FRP stirrup at the bend. The effects of bending radius, multiple wire layers, stirrup width and concrete strength on the tensile strength of CFRP stirrup were analyzed by orthogonal experiment. The results show that the number of multiple wire layers is the biggest factor affecting the tensile strength at the bending point of the new enclosed composite wire wound CFRP stirrup, and it is inversely proportional to the tensile strength at the bending point of the stirrup. Secondly, with the increase of stirrup width and bending radius, the tensile strength of stirrup increases, and the linear relationship is approximately positive. The influence of concrete strength on the tensile strength at the bend of stirrup is not obvious, and there is no obvious rule. The results show that the new process can obviously improve the tensile strength compared with the traditional process, and has a good engineering application prospect.

Effect of hyperbranched polyimide sizing agent on mechanical properties of carbon fiber reinforced poly(ether-ether-ketone)

ZHU Minjie, WEI Longsha, KONG Wenfeng, YAN Yiwu

2024, 0(11): 88-91. DOI: 10.19936/j.cnki.2096-8000.20241128.012

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Poly(ether-ether-ketone) (PEEK) has excellent properties, but there is a low interface strength between carbon fiber (CF) and PEEK due to the inert PEEK chains and the difficulty of forming the chemical bond with CF. To solve this problem, hyperbranched polyimide sizing agent was used to improve the interfacial properties of the composite. Firstly, hyperbranched polyimide was prepared by two-step method, and then the surface of carbon fiber was modified by sizing with hyperbranched polyimide by chemical grafting. The experimental results show that after sizing with hyperbranched polyimide, the surface roughness of carbon fiber increases. And the surface energy is increased to 48.0 mN/m, while the polar component of surface energy is decreased, indicating that its wettability with non-polar resin is improved. Moreover, the interlaminar shear strength and tensile strength of the modified carbon fiber reinforced PEEK composites have been increased by 52.4% and 39.8%, respectively, compared to the unmodified ones.

Study on the influence of constructing deformation rate on the mechanical properties of FRPM pipe culverts

WANG Jiacheng, SUN Chao, HU Lizhou, JIA Yingjie, WANG Qingzhou

2024, 0(11): 92-99. DOI: 10.19936/j.cnki.2096-8000.20241128.013

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In order to explore the influence of cumulative deformation from the constructing shallow buried glass fiber reinforced plastics mortar (FRPM) pipe culverts on the carrying capacity during the service period, a numerical calculation model of pipe-soil interaction for flexible FRPM culvert was established based on the field load test of the culvert in the subgrade filling constructing period. The effects of three different filling heights and three kinds of deformation rate on mechanical parameters such as circumferential strain, von Mises stress and earth pressure around pipe were studied through simulation. The results illustrate that the culvert has irregular ellipticity with the increase of the culvert deformation rate. Its stress mode changes from the circumferential overall uniform force to the more concentrating load on the upper part especially in the top area of the culvert. At the equivalent filling height, the circumferential strain, von Mises stress and earth pressure around pipe increase significantly with the increase of the deformation rate, and the greater the deformation rate, the more severe the adverse effect on the long-term mechanical properties of the pipe culvert. Meanwhile, increasing the thickness of the fill reduces the burden on the culvert. During the constructing period, the culvert deformation rate can be significantly reduced by setting steel support device inside the culvert, which contributes to improving the stress bearing mode and durability of culverts in the course of the service period.

Finite element analysis of composite insulating cross arms under high wing conditions

CAI Wei, LIU Jinghua, WU Xiong, LI Jian, SUN Qigang

2024, 0(11): 100-107. DOI: 10.19936/j.cnki.2096-8000.20241128.014

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In recent years, extreme weather has occurred frequently, posing great risks to the normal operation of the power grid. The use of new composite insulation cross arms has effectively improved the insulation performance and resistance to strong winds of transmission lines. This article investigates the displacement and stress of the 110 kV composite insulated cross arm structure under wind directions of 0°, 90°, 45°, and 60°. The research results show that the composite cross arm is generally stable and reliably connected at a design wind speed of 27 m/s. The maximum displacement occurs in the middle of the tie rod at 0° wind direction, reaching 16.95 mm, and the maximum equivalent stress is located on the connecting component on the tower side of the 0° wind direction, with a value of 81.21 MPa. By changing the wind speed through the lifting and lowering method, the maximum wind speed for stable operation is predicted to be about 31 m/s, which has the ability to resist level 11 storms.

Preparation and research on properties of lattice structure reinforced composite non deflecting roll

ZHANG Siwei, HU Yefa, WANG Jun

2024, 0(11): 108-113. DOI: 10.19936/j.cnki.2096-8000.20241128.015

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With the improvement of dyeing efficiency, the traditional heavy metal non deflecting rolls are replaced by lightweight and high-strength composite non deflecting roll. The non deflecting roll with stable linear pressure and high bending stiffness are required in pad dyeing process. In this paper, lattice structure reinforced composite materials were used to replace the traditional metal materials, round section profiles and square section profiles were selected to manufacture lattice structures, and the skin structure was prepared by circumferential winding process. Finally, a lightweight and high-stiffness composite non deflecting roll was prepared. The influences of lattice form and skin thickness on the linear pressure of composite rolls were analyzed by ANSYS simulation. The influences of lattice form and skin thickness on flexural stiffness and lateral compressive stiffness of composite rolls were characterized by low load three-point bending and circumferential compression. The results indicate that the linear pressure uniformity of the roll is greatly improved by circular lattice, and the bending stiffness and lateral compression stiffness of the roll with circular lattice are higher than that of the roll with square lattice. With the increase of skin thickness, the specific stiffness of the lattice increases, but the increase slows down. When the skin thickness is less than 4 mm, the enhancement effect of lattice contrast stiffness of circular section is higher than that of square section.

Application research of laser treatment in the wind turbine blade pultruded planks

MAO Yasai, MAO Yimei, PENG Bingbing, MU Jiaquan

2024, 0(11): 114-119. DOI: 10.19936/j.cnki.2096-8000.20241128.016

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When forming wind turbine blades, the pultruded planks were usually stacked on the blade skin, and the bonding between the pultruded planks and the skin, as well as between the pultruded planks, were completed by injecting resin. However, if the bonding effect between interfaces was not good, there is a risk of detachment. Against this background, this article studied the application of laser treatment in wind turbine blade pultruded planks. By analyzing the tensile and shear properties, interlaminar shear test (pultruded plank +laminate), and surface morphology of plates under different processing speeds, the optimal CO₂ laser processing speed was explored and the surface functional groups, roughness, mechanical properties, and secondary bonding properties of pultruded planks treated with laser and peel ply were compared. The results showed that when the processing power was 100 W and the processing speed was 1 500 mm/s, the resin on the surface of the board was ablated, and the fibers were exposed without any damage, making it the optimal combination of process parameters for the experiment. The pultruded planks treated with the optimal combination of laser process parameters achieved roughness, mechanical properties, and secondary bonding performance equivalent to that of the peel ply treatment. Laser surface treatment technology has fast processing speed, helps to increase extrusion speed, and can avoid the disadvantages of waste, environmental pollution and not conducive to increasing extrusion speed and efficiency caused by peel ply treatment process. It provided a new idea for the surface treatment process of pultruded planks.

Research on integrated design and forming of a composite combustor shell with external components

ZHAN Dongzhi, LI Xiuming, ZHENG Qing, ZHANG Jianxin, FANG Bing, XIAO Jun

2024, 0(11): 120-126. DOI: 10.19936/j.cnki.2096-8000.20241128.017

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The connection between the traditional airborne missile solid engine wing/suspension structure and the combustion chamber shell is generally formed by welding the wing/suspension base to the shell compartment section or connecting skirt column section, and the bearing limit of the suspension/wing structure is determined by the weld strength. However, the traditional molding method is no longer suitable for the molding of composite material combustion chamber shells with metal suspension structures, and the margin for further lightweight and cost reduction is limited. Based on the engineering development of some advanced forming technologies and in response to the above issues, this article proposes a new integrated forming technology for composite combustion chamber shells with external components from the aspects of shell structure design and forming. It compares and analyzes the design and forming process with conventional metal combustion chamber shells with external components, verifies the preparation of composite shells, and conducts relevant bearing performance and forming economy analysis, the feasibility of this molding technology has been verified, providing a new approach for the subsequent molding of composite material shells in the combustion chambers of airborne/shipborne missiles.

Study on the influence of moulding process on the performance of composite curved structural parts

KONG Na, WANG Xijie, LI Yingzhi, GOU Kai, WANG Zengjia

2024, 0(11): 127-132. DOI: 10.19936/j.cnki.2096-8000.20241128.018

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Through the research and development and test verification of two kinds of curved structural parts of drone rib and bulkhead, the influence of molding process on the performance of composite curved structural parts is studied. To meet the lightweight requirements of drones, the rib adopts a composite foam sandwich structure of the curved external surface. The web-type rib has weight reduction holes and connecting holes on it. According to the rib structure, the prefabricated body is processed on the composite foam sandwich panel. The ribs are made by three moulding processes of unsealed edge, edge sealing with carbon cloth and edge sealing with film adhesive on the exposed foam area at the edge of the prefabricated body. The ribs are tested under aerodynamic load and skin tension load respectively. In addition, the displacement numerical analysis is carried out by ABAQUS finite element analysis software platform, so as to conduct the deformation comparison of the wings under the two loads. It can be found from the results that the carbon cloth and the film adhesive can protect the foam core of the composite curved structure, and that the rib of the edge sealing with carbon cloth, that is, the integral cladding composite foam sandwich structure, has the highest strength and stiffness. Through the research and development of the bulkhead structure, the technical feasibility of the integral cladding composite foam sandwich structure is further verified.

Research progress on mechanical properties of fiber reinforced recycled aggregate concrete after high temperature

LIU Shengbing, LEI Shijie

2024, 0(11): 133-142. DOI: 10.19936/j.cnki.2096-8000.20241128.019

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Recycled aggregate concrete is widely used in civil engineering because of its energy-saving, environmental protection and recycling. But because of its inherent defects such as low strength, the concrete structure being easy to burst after high temperature of fire, the way of adding fiber can be used to improve its mechanical properties after high temperature. Based on extensive literature review at home and abroad, the research results of mechanical properties of recycled aggregate concrete after high temperature by different fibers such as steel fiber, polypropylene fiber, basalt fiber, glass fiber and hybrid fiber are summarized, based on the theory of fiber reinforcement and the mechanism of deterioration and damage of concrete at high temperature. The effects of factors such as fiber type and content, temperature changes on the mechanical properties of fiber reinforced recycled concrete after high temperature, such as compressive strength, splitting tensile strength and elastic modulus of recycled concrete after high temperature, and the micro-mesoscopic mechanism of the reinforcement effect of different fibers on the matrix of recycled aggregate concrete after different high temperatures are analyzed. Finally, the current research issues and directions for further research are indicated. The reference for theoretical research and practical application of mechanical properties of fiber reinforced recycled aggregate concrete after high temperatures are provided.

Research progress on the effect of amorphous alloy fibers on concrete properties

WANG Xingguo, LIU Zhixuan, GONG Jian, ZHANG Xianggang

2024, 0(11): 143-148. DOI: 10.19936/j.cnki.2096-8000.20241128.020

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With the increasing demand for infrastructure construction in China and the rapid development of the marine engineering industry, there is a growing focus on materials that can improve the performance of concrete in the construction industry. One such material is amorphous alloy fiber(AAF), which is considered a new and environmentally friendly option. The unique production process of AAF gives it excellent mechanical properties and corrosion resistance. By incorporating AAF as a reinforcing material, the mechanical properties and durability of concrete can be significantly enhanced. However, research on amorphous alloy fiber reinforced concrete, both domestically and internationally, is still in its early stages. This paper aims to review the recent progress in research on amorphous alloy fiber reinforced concrete, analyze and summarize its effect on the mechanical properties, durability, and high temperature resistance of concrete, and uncover the underlying reinforcing mechanism of amorphous alloy fiber in concrete. Finally, the paper discusses the potential future developments of amorphous alloy fiber reinforced concrete.

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