Advanced Composites Letters最新文献_第9页

Effect of recycled coarse aggregate on the properties of C40 self-compacting concrete 再生粗骨料对C40自密实混凝土性能的影响

IF 2.4 4区材料科学

Advanced Composites Letters Pub Date : 2019-11-11 DOI: 10.1177/0963693519885128

Yunyang Wang, Bin Zhao, Guang Yang, Y. Jia, Lijun Yang, Meng Li, Xiangliang Tang, Zhigang Huang, Jin Sun, Weimin Shen

{"title":"Effect of recycled coarse aggregate on the properties of C40 self-compacting concrete","authors":"Yunyang Wang, Bin Zhao, Guang Yang, Y. Jia, Lijun Yang, Meng Li, Xiangliang Tang, Zhigang Huang, Jin Sun, Weimin Shen","doi":"10.1177/0963693519885128","DOIUrl":"https://doi.org/10.1177/0963693519885128","url":null,"abstract":"The effect of recycled coarse aggregate (RCA) on the fresh and hardened properties of C40 self-compacting concrete (SCC) was investigated in this paper. The slump, T 500 (the time needed for SCC to spread into a round configuration with a nominal diameter of 500 mm), the slump flow and the flow time of fresh C40 SCC as well as the compressive strength and modulus of elasticity of hardened C40 SCC were studied. The modulus of elasticity of C40 SCC was calculated by theoretical formula, and the calculated values were compared with the experimental values. Mechanisms that effect on the C40 SCC properties at fresh and hardened states were also explored. The experimental results showed that the slump values of the C40 SCC are beyond 250 mm. The C40 SCC with RCA replacement content of 50% showed the highest slump value of 275 mm. All T 500 values of the C40 SCC are within 5 s. The slump flow of the C40 SCC slightly increases with the increase of replacement content of the RCA. In contrast, the compressive strength and modulus of elasticity of the C40 SCC slightly decrease with the increase of replacement content. The experimental values of modulus of elasticity are lower than that of the calculated values. Submerged in water before mixing of RCA leading to the slump flow of the C40 SCC increases with the increasing replacement content of the RCA. The old cement mortar attached to the RCA surface is the main reason that weakens the mechanical properties. The lower amount of coarse aggregate and the higher amount of cement paste attribute to the lower values of modulus of elasticity. This study implied that RCA can be effectively used in the production of C40 SCC without any significant sacrifice on workability and mechanical properties.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0963693519885128","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48830704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Instability analysis of a filament-wound composite tube subjected to compression/bending 纤维缠绕复合材料管压缩弯曲失稳分析

IF 2.4 4区材料科学

Advanced Composites Letters Pub Date : 2019-09-27 DOI: 10.1177/0963693519877417

G. Szabó, K. Varadi

{"title":"Instability analysis of a filament-wound composite tube subjected to compression/bending","authors":"G. Szabó, K. Varadi","doi":"10.1177/0963693519877417","DOIUrl":"https://doi.org/10.1177/0963693519877417","url":null,"abstract":"The aim of this study is to investigate the global buckling of a relatively long composite cord–rubber tube subjected to axial compression and its cross-sectional instability due to bending by a macromechanical nonlinear finite element (FE) model (nonlinear buckling analysis). Composite reinforcement layers are modelled as transversely isotropic ones, while elastomer liners are described by a hyperelastic material model that assumes incompressibility. Force–displacement, equivalent strain, equivalent stress results along with oblateness and curvature results for the complete process have been presented. It is justified that bending leads to ovalization of the cross section and results in a loss of the load-carrying capacity of the tube. Strain states in reinforcement layers have been presented, which imply that the probable failure modes of the reinforcement layers are both delamination and yarn-matrix debonding. There is a significant increase in strains due to cross-sectional instability, which proves that the effect of cross-sectional instability on material behaviour of the tube is crucial. A parametric analysis has been performed to investigate the effect of the member slenderness ratio on cross-sectional instability of the composite tube. It shows that Brazier force is inversely proportional to the slenderness ratio. It further shows that higher oblateness parameters occur in case of a lower slenderness ratio and that cross-sectional instability takes place at a lower dimensionless displacement in case of a lower slenderness ratio. FE results have been validated by a compression/bending test experiment conducted on a tensile test machine.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2019-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0963693519877417","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45857027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of FSW parameters for maximum UTS of AA6082/SiC/10P composites AA6082/SiC/10P复合材料最大UTS FSW参数的优化

IF 2.4 4区材料科学

Advanced Composites Letters Pub Date : 2019-09-04 DOI: 10.1177/0963693519867707

R. Bhushan, D. Sharma

{"title":"Optimization of FSW parameters for maximum UTS of AA6082/SiC/10P composites","authors":"R. Bhushan, D. Sharma","doi":"10.1177/0963693519867707","DOIUrl":"https://doi.org/10.1177/0963693519867707","url":null,"abstract":"Friction stir welding (FSW) offers significant advantage when compared with fusion joining process such as no shield gas or flux are used, no harmful gases are produced, thereby making the FSW environmentally friendly. In this work, an experimental approach has been used for studying and optimizing the FSW process, applied on AA6082/SiC/10P composite plates. In particular, the effect of process parameters on ultimate tensile strength (UTS) of FSW joint has been investigated. The UTS of FSW joints is affected by FSW parameters. The FSW of the AA6082/SiC/10P composite plates was carried out with different combinations of FSW parameters. The experiments were conducted according to the Taguchi’s L9 orthogonal array. Taguchi method of designing the experiments was used for optimization of the FSW parameters. The signal to noise ratio and analysis of variance were used to determine the effects of FSW parameters on the UTS of the welded joints. The optimum FSW parameters for the maximum UTS were found to be the tool rotation speed of 1800 r/min, the welding speed of 100 mm/min and the tool tilt angle of 2°. UTS increased by 24.5% when FSW was carried out at optimum process parameters as compared to initial FSW parameters. Results have shown good agreement between the predicted and experimental values of UTS. High tensile strength is required for use of FSWed AA6082/SiC/10P composite joints in aerospace industry.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2019-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0963693519867707","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48041763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Experimental study on the mechanical behavior of BFRP-bamboo composite beam BFRP竹复合梁力学性能的试验研究

IF 2.4 4区材料科学

Advanced Composites Letters Pub Date : 2019-07-31 DOI: 10.1177/0963693519867335

Q. Lv, Ye Liu

引用次数: 13

Improved numerical analysis of structures reinforced by composite FRP: Hygrothermal and prestressing loads with taper effect 复合材料FRP加固结构的改进数值分析：具有锥形效应的湿热和预应力荷载

IF 2.4 4区材料科学

Advanced Composites Letters Pub Date : 2019-06-19 DOI: 10.1177/0963693519858364

Mohammed Amine Hebbaz, B. Kerboua, M. Tarfaoui

{"title":"Improved numerical analysis of structures reinforced by composite FRP: Hygrothermal and prestressing loads with taper effect","authors":"Mohammed Amine Hebbaz, B. Kerboua, M. Tarfaoui","doi":"10.1177/0963693519858364","DOIUrl":"https://doi.org/10.1177/0963693519858364","url":null,"abstract":"Fiber-reinforced polymer (FRP) composites are becoming suitable and substantial materials in repairing and replacing conventional metallic materials because of their high strength and stiffness. Steel beams can be strengthened in flexure using bonded FRP or using steel plates. In such plated beams, shear forces develop in the bonded beam and these will be transferred to the FRP plate via the adhesion technique. Thus, the interfacial shear stress and normal stress will develop consequently, and debonding may occur at the FRP plate ends due to high interfacial stress values in this area. This original research aims to study the debonding phenomenon using an analytical and a numerical finite element models, in order to identify the interfacial stresses of a steel beam strengthened by the FRP plate with taper model, taking into account a new coupled approach of prestressing force and hygrothermal effect. This article explores the effects of various parameters, such as geometrical and physical properties, on the stress behavior of FRP composites.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2019-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0963693519858364","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43790396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effect of water absorption on the Weibull distribution of fatigue test in jute-reinforced polyester composite materials 吸水率对黄麻增强聚酯复合材料疲劳试验威布尔分布的影响

IF 2.4 4区材料科学

Advanced Composites Letters Pub Date : 2019-05-24 DOI: 10.1177/0963693519853833

D. Djeghader, B. Redjel

引用次数: 14

Structural performance of frames with concrete-filled steel tubular columns and steel beams: Finite element approach 钢管混凝土柱和钢梁框架的结构性能:有限元方法

IF 2.4 4区材料科学

Advanced Composites Letters Pub Date : 2019-01-01 DOI: 10.1177/2633366X19894593

A. Ahmed, E. Güneyisi

{"title":"Structural performance of frames with concrete-filled steel tubular columns and steel beams: Finite element approach","authors":"A. Ahmed, E. Güneyisi","doi":"10.1177/2633366X19894593","DOIUrl":"https://doi.org/10.1177/2633366X19894593","url":null,"abstract":"Composite columns such as concrete-filled steel tube (CFST) were adopted in many building constructions in recent years because of carrying high loading with the ability to resist buckling and small cross-sectional area. The high behavior of the CFST columns is due to the interaction between steel and concrete which called the composite action. This type of composite column without main and tie reinforcements embedded in concrete gives high axial compression strength to resist the external loadings with the economic sectional area. The work presented in this article includes simulation models that tested by other researchers and a parametric study on the performance of frames that connected steel beam by composed columns of circular CFST that subjected to lateral loading. A finite element (FE) approach is adopted to simulate the models by ANSYS software. All models consider the linear and nonlinear material analysis of the concrete and steel. The validity of the developed model was examined by comparing with the experimental data founded in the literature. Different parameters such as the ratio of the axial load, the slenderness ratio of CFST column, the linear stiffness ratio of the beam–column, the steel yield strength of the beam, the steel yield strength of the tube, and concrete strength on the performance of the composite frames were also studied and the load-deformation performance was obtained over the different cases of the study. Analysis results by FE modeling were in good agreement with the experimental results.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2633366X19894593","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45142327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Material characterization of SiC and Al2O3–reinforced hybrid aluminum metal matrix composites on wear behavior SiC和al2o3增强杂化铝基复合材料磨损性能表征

IF 2.4 4区材料科学

Advanced Composites Letters Pub Date : 2019-01-01 DOI: 10.1177/0963693519856356

Rajesh Am, M. Kaleemulla, S. Doddamani, Bharath Kn

引用次数: 36

The friction and wear properties of RGO/3Y-TZP composites under dry sliding 干滑动条件下RGO/3Y-TZP复合材料的摩擦磨损性能

IF 2.4 4区材料科学

Advanced Composites Letters Pub Date : 2019-01-01 DOI: 10.1177/2633366X19890626

Liqi Liu, Lei Shi, Xiaofeng Guo, Aijun Li, Fangzhou Zhang

引用次数: 3

Resistance behaviour of carbon fibre-reinforced polymers subjected to lightning strikes: Experimental investigation and application 碳纤维增强聚合物在雷击下的电阻行为:实验研究与应用

IF 2.4 4区材料科学

Advanced Composites Letters Pub Date : 2019-01-01 DOI: 10.1177/2633366X19892272

Jian Chen, Z. Fu, Yang Zhao

{"title":"Resistance behaviour of carbon fibre-reinforced polymers subjected to lightning strikes: Experimental investigation and application","authors":"Jian Chen, Z. Fu, Yang Zhao","doi":"10.1177/2633366X19892272","DOIUrl":"https://doi.org/10.1177/2633366X19892272","url":null,"abstract":"It is difficult to monitor lightning damage to carbon fibre-reinforced polymers (CFRPs) online. This work experimentally investigates the changes associated with the electrical resistance of CFRPs subjected to lightning strikes. Two kinds of simulated lightning currents with different amplitudes in the range of 10–80 kA were injected into the CFRP samples. By measuring and comparing the changes in the struck-side (front) surface resistance, the surface resistance of the side opposite to the struck-side (back) and the oblique resistance of each sample before and after the lightning strike, it was observed that inflection points exist in the curve of the resistance change rate. The resistance decreases with increasing peak currents before the inflection point and increases when the peak current goes beyond the inflection point. The change rate of the front surface resistance is more sensitive to the lightning damage than are those of the back surface resistance and the oblique resistance. Different simulated lightning currents have approximately the same action integrals at the inflection points of resistance change rate. The characteristics indicate that resistance change detection could be a possible method for the online monitoring of CFRP lightning damage.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2633366X19892272","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44656110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3