{"title":"Microstructure and corrosion resistance of Al3(Zr, Ti)/Al composite prepared by powder metallurgy","authors":"Dao-kui Xu, W. Long, Xiaoping Zhou","doi":"10.1177/2633366X20906160","DOIUrl":"https://doi.org/10.1177/2633366X20906160","url":null,"abstract":"In the automotive and aviation fields, the complex use environment is critical to the performance requirements of materials, the corrosion resistance of materials severely limits the service life of materials, and improving the corrosion resistance of materials is of great significance in industrial production. In this article, in situ synthesis of powder metallurgy was used to prepare Al-Zr-Ti composites, and the effects of the addition of different amounts of Ti elements on the microstructure and corrosion resistance of Al-Zr-Ti composites were studied. The results show that Ti atoms form Al3(Zr, Ti) compounds by substituting Zr atoms in Al3Zr in composite materials to form substituted solid solutions to improve the properties of composite materials. With the addition of Ti, the corrosion resistance of the composites is improved compared with Al-Zr binary; when the Ti content is 10% (wt), the corrosion resistance of the composites reaches the best value, the corrosion potential is −0.67211 V, and the corrosion current is 1.4804 × 10−7 A cm−2.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2020-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2633366X20906160","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46288323","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}
{"title":"Effects of foaming agent on properties of foamed gel","authors":"Q. Cao, Jianjun Shen, Wenjie Guo","doi":"10.1177/0963693519881649","DOIUrl":"https://doi.org/10.1177/0963693519881649","url":null,"abstract":"To improve foam expansion and the stability of the foamed gel selected as the starting point, three foaming agents with relatively higher foam expansion and three foam stabilizers were used to determine optimum gradient and composition of the gel. Sodium laurate and dodecyl trimethyl ammonium bromide at a proportion of 2:3 were observed to produce the desirable foaming property and also created the largest foaming volume after the addition of 0.2% polyethylene glycol as the foam stabilizer. Different concentrations of gelatinizing and cross-linking agents were added to the foamed gel containing the foaming agent and the foam stabilizer. The most suitable ratio of the gelatinizing agent and the cross-linking agent determined on the basis of volume of foam dewatering after the addition of foam stabilizer for 6 h was 0.6%:0.5%. The resulting foamed gel was evaluated for rheological and plugging properties and a decrease in the viscosity of the gel and better plugging effect on coal seam were observed.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2020-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0963693519881649","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45203288","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}
{"title":"Parametric analysis of magnetic field-dependent viscosity and advection–diffusion between rotating discs","authors":"R. Shah, Aamir Khan, Amjad Ali","doi":"10.1177/2633366X19896373","DOIUrl":"https://doi.org/10.1177/2633366X19896373","url":null,"abstract":"The constitutive expressions of unsteady Newtonian fluid are employed in the mathematical formulation to model the flow between the circular space of porous and contracting discs. The flow behavior is investigated for magnetic field-dependent (MFD) viscosity and heat/mass transfers under the influence of a variable magnetic field. The equation for conservation of mass, modified Navier–Stokes, Maxwell, advection diffusion and transport equations are coupled as a system of ordinary differential equations. The expressions for torques and magnetohydrodynamic pressure gradient equation are derived. The MFD viscosity ϑ , magnetic Reynolds number ℵ e m , squeezing Reynolds number ℵ b , rotational Reynolds number ℵ a , magnetic field components ℵ c , ℵ d , pressure F pres and the torques ϱ ′ 0 , ϱ 1 which the fluid exerts on discs are discussed through numerical results and graphical aids. It is concluded that magnetic Reynolds number causes an increase in magnetic field distributions and decrease in tangential velocity of flow field, also the fluid temperature is decreasing with increase in magnetic Reynolds number. The azimuthal and axial components of magnetic field have opposite behavior with increase in MFD viscosity.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2020-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2633366X19896373","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43700090","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}
{"title":"An exponential-trigonometric higher order shear deformation theory (HSDT) for bending, free vibration, and buckling analysis of functionally graded materials (FGMs) plates","authors":"Y. Belkhodja, D. Ouinas, F. Zaoui, H. Fekirini","doi":"10.1177/0963693519875739","DOIUrl":"https://doi.org/10.1177/0963693519875739","url":null,"abstract":"Two assumptions have been made based on by this proposed theory, which come from recently developed exponential–trigonometric shape function for transverse shear deformation effect and a simple higher order shear deformation theory for plate, based on a constraint between two rotational displacements of axis parallel to the plate midplane, about the axes x, y Cartesian coordinates system, which caused fewer unknown number. For the application of this method, a displacement field extended as only bending membrane for transverse displacement is used, a governing equations of motion as a result are determined according to Hamilton’s principle, and simplified using Navier analytical solutions, as well as the transverse shear stresses effect that satisfied the stress-free boundary conditions on the simply supported plate free faces as a parabolic variation along the thickness are taken into account. A functionally graded materials plates are chosen for the parametric study, where the plates are functionally graded continuously in materials through the plate thickness as a function of power law or exponential form. The aim of this study is to analyze the bending, free vibration as well as the buckling mechanical behaviors, where the results are more focused on the investigation of different parameters such as the volume fraction index, geometric ratios, frequency modes, in-plane compressive load parameters and material properties effects on the deflection, stresses, natural frequencies, and critical buckling load, which are validated in terms of accuracy and efficiency with other plate theories results found in the literature.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2020-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0963693519875739","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47704344","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}
Z. Yusof, Z. A. Rasid, M. Z. Hassan, S. Sapuan, S. Sarip, H. Yahaya, F. Yakub
{"title":"The parametric instability improvement of fully anisotropic composite plates with embedded shape memory alloy","authors":"Z. Yusof, Z. A. Rasid, M. Z. Hassan, S. Sapuan, S. Sarip, H. Yahaya, F. Yakub","doi":"10.1177/2633366X19899405","DOIUrl":"https://doi.org/10.1177/2633366X19899405","url":null,"abstract":"The parametric resonance or instability challenge in designing laminated composite is crucial in areas such as aeronautical and marine where structures experience dynamic loading. Shape memory alloy (SMA), a type of smart material, has been used to improve the structural behaviours of composite plate using its well-known property of shape memory effect. It is also known that mechanical couplings that exist in unsymmetric composite can increase the instability of the composite. In this study, the SMA property has been exploited to generate recovery stress in the composite to improve its parametric instability problem. The unsymmetric composites were embedded with SMA fibres, and the formulation for the dynamic instability of this composites was developed using finite element method. The third-order shear deformation theory of composite was applied. The results were initially validated for the case of composite without SMA. Following that, the parametric instability behaviour of unsymmetric composites was studied under the effect of several parameters. It was found that the mechanical couplings that exist in the unsymmetric composite have increased the instability of the composite, but the presence of the SMA can significantly reduce this instability.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2020-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2633366X19899405","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41469179","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}
JinYan Liu, Xiaoyue Hu, H. Dai, Zhi San, Fuke Wang, L. Ren, Guoyuan Li
{"title":"Polycaprolactone/calcium sulfate whisker/barium titanate piezoelectric ternary composites for tissue reconstruction","authors":"JinYan Liu, Xiaoyue Hu, H. Dai, Zhi San, Fuke Wang, L. Ren, Guoyuan Li","doi":"10.1177/2633366X19897923","DOIUrl":"https://doi.org/10.1177/2633366X19897923","url":null,"abstract":"The piezoelectric materials with excellent bioactivity have attracted more attentions recently and have broad potential applications in tissue engineering. In this article, the barium titanate (BT) particles were filled into the polycaprolactone (PCL)/calcium sulfate whisker (CSW) (15 wt%) composites to prepare the PCL/CSW/BT ternary composites. Due to the reinforcement synergy between the CSWs and the BT particles, the mechanical properties of the ternary composites were increased by 50% compared with the PCL/BT binary composites. The piezoelectric coefficient of the ternary composites is still in the range of natural bone. The ternary composite can promote the adhesion and proliferation of cells. The composites in this study have potential applications in tissue engineering.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2020-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2633366X19897923","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47728986","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}
{"title":"Knowledge technologies based on fabrication process composite materials and remote sensing applications","authors":"Faten A Mustafa, O. Bayat","doi":"10.1177/2633366X19895989","DOIUrl":"https://doi.org/10.1177/2633366X19895989","url":null,"abstract":"The aim of this work concentrates on utilizing powerful MATLAB programming (software version R2016a) to evaluate the impact of environmental variations of water case in the Mosul Dam reservoir and observed its receding impact on human life activities based on composite image processing applications. Furthermore, composite materials of different temporal remote sensing data increase powerfully the estimation of environmental variables of relevance to human health. Thus, temporal remote sensing data trends to enhance the efficiency of detecting receding water resources effect of human life impacts over different years. Two steps were implemented, which focuses on the estimation of changes in the water surface of the lake over 31 years. Preprocessing step concentrates on composite data materials from different Landsats to be more suitable for next step by utilizing color composite image processing and postprocessing step implemented the coastline detection of the reservoir and recognition of the quality of clear water in the lake due to the variation of water spectral reflectivity by hybrid classification method. The performance of this study is based on statistics measurements on the surface area of water level and overall accuracy, which indicated that hybrid classification method improves the capacity of integrating two classification methods, which gained highly identification water lake classes regarding its quality and more. The obtained results achieved the desired purpose of this study to investigate the high power application through implementing composite different image processing techniques with temporal satellite data to conversance the amount of water level changes in Mosul Dam reservoir and its impact on storage quantity over years.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2020-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2633366X19895989","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42446386","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}
Xi Kong, Ben Wang, Minghai Wang, Yaohui Zheng, Shujuan Ma, Lijun Yang
{"title":"Microscratch characteristic and deformation mechanism of SiC particle-reinforced composites at elevated temperatures","authors":"Xi Kong, Ben Wang, Minghai Wang, Yaohui Zheng, Shujuan Ma, Lijun Yang","doi":"10.1177/2633366X19898694","DOIUrl":"https://doi.org/10.1177/2633366X19898694","url":null,"abstract":"The effect of temperature on scratching forces for 16% SiC/Al and 45% SiC/Al composites was investigated in this article. The results showed that the mean normal forces for 16% SiCp/Al and 45% SiCp/Al decreased by 80% and 68% at 300°C compared with 25°C, and the average tangential force decreased by 67% and 66%, respectively. The reason was that the strength of composites was reduced with the increasing temperature, which results in a reduction of flow stresses in the primary shear zones. There are three stages occurring in the scratching process according to the cutting tool interacting with different phases with the increasing temperature. The temperature and the particle contents have an obvious effect on the deformation mechanism by influencing the ratio value of the elastic modulus and hardness. It is founded that the friction coefficient increased fast when the temperatures increased from 25° to 300°C for both 16% SiCp/Al and 45% SiCp/Al composites, and the temperature provided a bigger influence compared with the particle contents. Furthermore, two distinct regions of the hardness variation with the increasing temperature for both two composites were observed: (1) a gradual decrease with the temperature up to 285°C and (2) an abrupt dropping above 285°C. Finally, a physical model representing the deformation process considering the elastic recovery and piles up in high temperature has been developed.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2020-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2633366X19898694","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43077460","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}
{"title":"The influence of yarn fineness and number of yarn layers on in-plane shear properties of 3-D woven fabric","authors":"Liuxiang Guan, Jialu Li, Ya’nan Jiao","doi":"10.1177/2633366X19897921","DOIUrl":"https://doi.org/10.1177/2633366X19897921","url":null,"abstract":"The 3-D layer-to-layer angle-interlock woven fabric (LLAIWF) has good deformability on a complicated contour, which offers them a large application potential in the field of aerospace. This article mainly focuses on the influence of yarn fineness and number of yarn layers on in-plane shear properties of 3-D LLAIWF during bias extension. Two methods of varying the thickness of 3-D LLAIWF were designed: changing yarn fineness and changing the number of yarn layers. The deformation mechanism of LLAIWF in bias-extension test was analyzed. The effects of two methods on in-plane shear deformation were compared and analyzed. In addition to the data processing on the experimental curve, digital image correlation analysis was conducted on the test photographs, from which shear angles in different area shear angle were measured. The mesostructure of fabric during the bias-extension test was observed. The effect of decreasing yarn layers on the mesostructure of fabric was observed by cutting fabric. The results demonstrated that the yarn fineness and the number of yarn layers play a key role in the in-plane shear properties of 3-D LLAIWF. In addition, the changing of fabric thickness causes that the deformation is asymmetrical. The effect of warp yarn fineness is similar to that of weft yarn fineness during the bias-extension test. Reducing the internal yarns of the fabric created a gap, where the yarns were reduced. This gap will affect the deformability of the fabric.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2020-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2633366X19897921","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49213055","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}
Wei Liu, Hongying Zhang, Haoyu Feng, Miao Hu, Z. Chen
{"title":"Effect of fiber architecture on the residual strength of laminate glass fiber-reinforced polymer composites after impact","authors":"Wei Liu, Hongying Zhang, Haoyu Feng, Miao Hu, Z. Chen","doi":"10.1177/2633366X19897919","DOIUrl":"https://doi.org/10.1177/2633366X19897919","url":null,"abstract":"Glass fiber-reinforced polymer (GFRP) composites are widely applied in automotive and shipbuilding industry. However, impact damage is unavoidable to the composites during production or service, and the evaluation of performance degradation after impact is necessary. The architecture of the fiber preform shows significant influence on the impact damage behavior of GFRP. The present work focused on the influence of preform structure on damage evolution and residual load-bearing capability of the composites. The microstructure and the residual strength after the impact of GFRP with plain-weave preform structure and cross-ply preform structure have been investigated, respectively. The low velocity impact primarily caused matrix cracking and delamination, but unobvious fiber failure to GFRP. More impact-damaged plies were detected in cross-ply composites than plain-weave composites after impact. It indicated that plain-weave preform structure owes better impact damage shielding capability. However, the GFRP with plain-weave preform structure exhibited better impact resistant ability under low impact energy but less residual strength under high impact energy, compared with the GFRP with cross-ply preform structure. The interaction between the warp and weft fibers made the plain-weave composites absorbing more energy in a single ply, which was the reason for the plain-weave composites to exhibit excellent damage shielding performance but poor residual strength under high impact energy.","PeriodicalId":55551,"journal":{"name":"Advanced Composites Letters","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2020-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2633366X19897919","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48713605","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}