Composites and Advanced Materials最新文献_第8页

Development of pre-molded internal thread on composite tubes 复合管预成型内螺纹的研制

Composites and Advanced Materials Pub Date : 2021-01-01 DOI: 10.1177/26349833211000756

A. Takano, R. Kitamura, T. Masai, Sayaka Nishino

{"title":"Development of pre-molded internal thread on composite tubes","authors":"A. Takano, R. Kitamura, T. Masai, Sayaka Nishino","doi":"10.1177/26349833211000756","DOIUrl":"https://doi.org/10.1177/26349833211000756","url":null,"abstract":"Premolded internal threads on composite tubes were developed. The composite tubes with threads on both ends were made using a mandrel with a male thread. The threads can be applied to struts with adjustable end fits and composite pressure vessels with threaded caps that enable disassembly for inspection and repair. Carbon fiber-reinforced plastic (CFRP) prepregs were laid up on a mandrel, wrapped with shrink tape, and cured in an oven. The threads were built-in, without using machine cutting, and the fibers on the thread were continuous through the thread and tubes for high strength. The thread was alternately rounded, convex, and concave in shape to enable CFRP prepregs to be laid up. Two types of specimen were made and tested. The layup sequence of specimen A was [0/h/90/h/0/h(1/2)]s, and that of specimen B was [0/h/90/h/90/h/0/h/90/h/90/h/90/h/90/h/0/h/90/90/0], where “h” denotes a helical layer along the concave part of the threads. The relation between load and strain is nonlinear because of the rounded shape of the threads; however, a simple and closed form analytical model was able to predict the strength of the threads and design of the threads. The model was compared with the experimental results. In addition, an application of threads for the pressure vessel of the hybrid rocket motor is also reported. The combustion test proceeded without failure. Visual inspection after the test indicated that the threads and tubes were not damaged, and thus, they can be applied to high-pressure and high-temperature rocket motors.","PeriodicalId":10608,"journal":{"name":"Composites and Advanced Materials","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75330246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Facile growth of high transmittance ZnO micro-rod clusters on indium tin oxide by a wet-chemical synthesis method 湿化学合成法在氧化铟锡上生长高透射率ZnO微棒团簇

Composites and Advanced Materials Pub Date : 2021-01-01 DOI: 10.1177/26349833211038954

S. Morkoç Karadeniz

引用次数: 0

Dynamic mechanical behaviors of epoxy resin/hollow polymeric microsphere composite foams under forced non-resonance and forced resonance 环氧树脂/中空聚合物微球复合泡沫在强制非共振和强制共振下的动态力学行为

Composites and Advanced Materials Pub Date : 2021-01-01 DOI: 10.1177/26349833211008195

Rui Li, Guisen Fan, Ouyang Xiao, Guojun Wang, Hao Wei

{"title":"Dynamic mechanical behaviors of epoxy resin/hollow polymeric microsphere composite foams under forced non-resonance and forced resonance","authors":"Rui Li, Guisen Fan, Ouyang Xiao, Guojun Wang, Hao Wei","doi":"10.1177/26349833211008195","DOIUrl":"https://doi.org/10.1177/26349833211008195","url":null,"abstract":"Composite foams with 10–50 vol% hollow polymeric microspheres were prepared using bisphenol A epoxy resin and polyetheramine curing agent as the matrix. The results demonstrated that the density, hardness, and static mechanical properties of the epoxy resin/hollow polymer microsphere composite foams, as well as their dynamic mechanical properties under forced non-resonance, were similar to those of polymer/hollow glass microsphere composite foams. At 25°C and under 1–100 Hz forced resonance, the first-order and second-order resonance frequencies of the composite foams shifted to the low-frequency region as the volume fraction of hollow polymer microspheres increased. Meanwhile, the first-order and second-order loss factors of the as-prepared composite foams were improved by 41.7% and 103.3%, respectively, compared with the pure epoxy resin. Additionally, the first-order and second-order loss factors of the as-prepared composite foams reached a maximum at 40 vol% and 30 vol% hollow polymer microspheres, respectively. This research helps us to expand the application range of composite foam materials in damping research.","PeriodicalId":10608,"journal":{"name":"Composites and Advanced Materials","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76250639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Improving the mechanical properties of polypropylene composites with coconut shell particles 改善椰壳颗粒聚丙烯复合材料的力学性能

Composites and Advanced Materials Pub Date : 2021-01-01 DOI: 10.1177/26349833211007497

H. C. Obasi, Uchechi C Mark, U. Mark

{"title":"Improving the mechanical properties of polypropylene composites with coconut shell particles","authors":"H. C. Obasi, Uchechi C Mark, U. Mark","doi":"10.1177/26349833211007497","DOIUrl":"https://doi.org/10.1177/26349833211007497","url":null,"abstract":"Conventional inorganic fillers are widely used as fillers for polymer-based composites. Though, their processing difficulties and cost have demanded the quest for credible alternatives of organic origin like coconut shell fillers. Dried shells of coconut were burnt, ground, and sifted to sizes of 63, 150, 300, and 425 µm. The ground coconut shell particles (CSP) were used as a filler to prepare polypropylene (PP) composites at filler contents of 0% to 40% via injection melt blending process to produce PP composite sheets. The effect of the filler particle size on the mechanical properties was investigated. The decrease in the size of filler (CSP) was found to improve the yield strength, tensile strength, tensile modulus, flexural strength, flexural modulus, and hardness of PP by 8.5 MPa, 15.75 MPa, 1.72 GPa, 7.5 MPa, 100 MPa, and 10.5 HR for 63 µm at 40%, respectively. However, the elongation at break and modulus of resilience of the PP composites were seen to increase with increase in the filler size. Scanning electron microscope analysis showed that fillers with 63 µm particle size had the best distribution and interaction with the PP matrix resulting in enhanced properties.","PeriodicalId":10608,"journal":{"name":"Composites and Advanced Materials","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79406693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Fabrication and microstructural analysis of 3A21/7075 aluminum alloy cladding material based on impact jet solid–liquid compound casting 冲击喷射固液复合铸造3A21/7075铝合金包层材料制备及显微组织分析

Composites and Advanced Materials Pub Date : 2021-01-01 DOI: 10.1177/2633366X20934485

Hu Ming, Ren Xiaoxue, Sun Jian-bo, Z. Yunlong, Teng Chunfeng, Qiao Guang

{"title":"Fabrication and microstructural analysis of 3A21/7075 aluminum alloy cladding material based on impact jet solid–liquid compound casting","authors":"Hu Ming, Ren Xiaoxue, Sun Jian-bo, Z. Yunlong, Teng Chunfeng, Qiao Guang","doi":"10.1177/2633366X20934485","DOIUrl":"https://doi.org/10.1177/2633366X20934485","url":null,"abstract":"To solve thickness problem for high-strength aluminum alloy used as plastic mold materials and eliminate oxide film on the surface of aluminum alloy, a new compound casting, namely impact jet solid–liquid compound casting, was developed to fabricate 3A21/7075 aluminum alloy cladding material. Then, optical microscope (OM), electron-backscattered diffraction (EBSD) technique, and transmission electron microscope (TEM) together with energy-dispersive spectrometer (EDS) were used to analyze microstructure of 3A21/7075 aluminum alloy cladding material. The OM and EBSD results showed that the 3A21/7075 aluminum alloy cladding material was composed of 3A21 cladding layer, fusion zone (FZ), heat-affected zone, and 7075 matrix. The grain morphology on both sides of FZ had great differences. Moreover, the TEM and EDS results showed that the 3A21 cladding layer showed a bulk phase and lots of fine and dispersed granular phases, while the 7075 matrix appeared undetermined strip phases and amounts of fine and dispersed rod-like phases. Moreover, FZ existed a great deal of fine and dispersed granular phases and rod-like phases. The 3A21/7075 aluminum alloy cladding material could effectively solve the problems mentioned above and the in-depth analysis of microstructures of 3A21/7075 aluminum alloy cladding material was of great importance in terms of engineering value and academic significance.","PeriodicalId":10608,"journal":{"name":"Composites and Advanced Materials","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82696638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Buckling and postbuckling of architectured materials: A review of methods for lattice structures and metal foams 建筑材料的屈曲和后屈曲:晶格结构和金属泡沫的研究方法综述

Composites and Advanced Materials Pub Date : 2021-01-01 DOI: 10.1177/26349833211003904

C. Völlmecke, M. Todt, Stylianos Yiatros

引用次数: 4

Vibration suppression analysis and experimental test of additional constrained damping layer in space science experiment cabinet 空间科学实验柜附加约束阻尼层的减振分析与实验试验

Composites and Advanced Materials Pub Date : 2021-01-01 DOI: 10.1177/2633366X20978659

Haitao Luo, Siwei Guo, Changshuai Yu, Jia Fu, Haochen Wang, Guangming Liu, Zhong Luo

{"title":"Vibration suppression analysis and experimental test of additional constrained damping layer in space science experiment cabinet","authors":"Haitao Luo, Siwei Guo, Changshuai Yu, Jia Fu, Haochen Wang, Guangming Liu, Zhong Luo","doi":"10.1177/2633366X20978659","DOIUrl":"https://doi.org/10.1177/2633366X20978659","url":null,"abstract":"Aiming at the problem that the vibration of the space science experimental cabinet is too large during the launch phase of the rocket, the viscoelastic constrained damping layer is used to suppress the vibration. Firstly, to explore the vibration suppression mechanism of the constrained damping layer, the dynamic model of the constrained damping layer is established and the modal loss factor is calculated. Secondly, the influence of the modulus, material thickness, and the position and the area of the damping layer on the loss factor of the structure is analyzed. Finally, the simulation and experiment methods are used to calculate and verify the space science experiment cabinet with additional constrained damping layer. The results show that the viscoelastic constrained damping can effectively reduce the vibration level of the space science experiment cabinet, and the acceleration response in the resonance region is reduced by more than 56%. The viscoelastic constrained damping structure is simple and easy to realize, which can suppress the vibration of the space payload design is of great significance.","PeriodicalId":10608,"journal":{"name":"Composites and Advanced Materials","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81909825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Machining precision controlling method for plane surface assisted by SPDT SPDT辅助平面加工精度控制方法

Composites and Advanced Materials Pub Date : 2021-01-01 DOI: 10.1177/2634983321995509

Jingjin Li, Shijun Ji, Ji Zhao, Fei Yuan, Handa Dai

引用次数: 0

3D printing of a continuous fiber-reinforced composite based on a coaxial Kevlar/PLA filament 基于同轴凯夫拉/PLA长丝的连续纤维增强复合材料的3D打印

Composites and Advanced Materials Pub Date : 2021-01-01 DOI: 10.1177/26349833211000058

Trenton Cersoli, B. Yelamanchi, E. MacDonald, J. G. Carrillo, P. Cortes

{"title":"3D printing of a continuous fiber-reinforced composite based on a coaxial Kevlar/PLA filament","authors":"Trenton Cersoli, B. Yelamanchi, E. MacDonald, J. G. Carrillo, P. Cortes","doi":"10.1177/26349833211000058","DOIUrl":"https://doi.org/10.1177/26349833211000058","url":null,"abstract":"Additive manufacturing has allowed for the production of complex and mass customized geometries, but often at the expense of mechanical performance, a penalty which can be in part mitigated with the fabrication of composite parts. Thermoplastic structures fabricated with material extrusion additive manufacturing stand to be improved in terms of fracture toughness with the integration of continuous fibers. The present research program has investigated the production of a continuously reinforced filament to be used in open-source fused filament fabrication systems. Three different volume fractions of Kevlar fibers were incorporated into a polylactic acid (PLA) thermoplastic filament. It was observed that a 20% fiber volume fraction resulted in a doubling of the tensile strength relative to the unreinforced PLA parts. High-velocity impact tests were also performed on the reinforced printed thermoplastic material, and it was observed that the composite with the highest fiber volume fraction provided an impact energy resistance improved by a factor of four, relative to the plain PLA. The reinforced fibers have shown to restrain the penetration of the projectile at velocities similar to those that perforated the unreinforced PLA. The present work has demonstrated the production of printed composites without the need of modifying the extruding systems of a commercial 3D printer. This approach could represent an alternate and feasible process for producing continuously reinforced 3D-printed thermoplastic parts with utility for high-velocity impact applications.","PeriodicalId":10608,"journal":{"name":"Composites and Advanced Materials","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87241566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

An investigation of the mechanical properties and bonding mechanism of Ti/Al-laminated composites fabricated by ultrasonic consolidation 超声固结制备Ti/ al层合复合材料的力学性能及结合机理研究

Composites and Advanced Materials Pub Date : 2021-01-01 DOI: 10.1177/2633366X20969193

J. Bo, R. Xue-ping, Han Yujie, Hou Hongliang, Wang Yaoqi

{"title":"An investigation of the mechanical properties and bonding mechanism of Ti/Al-laminated composites fabricated by ultrasonic consolidation","authors":"J. Bo, R. Xue-ping, Han Yujie, Hou Hongliang, Wang Yaoqi","doi":"10.1177/2633366X20969193","DOIUrl":"https://doi.org/10.1177/2633366X20969193","url":null,"abstract":"Foils such as 1100 aluminum and TC4 titanium were used as matrix materials for ultrasonic consolidation test of dissimilar metal materials, and the samples of Ti/Al-laminated composites were prepared. The effect of amplitude and static pressure on the interfacial bonding strength of Ti/Al foil was studied by adhesion test. The mechanical properties of Ti/Al-laminated composites were tested by electronic universal testing machine. The microstructure of Ti/Al foil interface was observed by transmission electron microscope. The results show that ultrasonic consolidation can achieve a good bonding interface of Ti/Al foil, and the bonding strength of the interface increases first and then decreases with the increase of static pressure, and increases monotonously with the increase of amplitude. The optimum adhesion strength is 58.08 N cm−1. The high temperature deformation constitutive model of Ti/Al-laminated composites is established and verified. The Ti/Al interface has metallurgical bonding, and the inner microstructure of Ti/Al matrix is obviously refined. The surface of titanium foil has formed nanocrystalline.","PeriodicalId":10608,"journal":{"name":"Composites and Advanced Materials","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73038467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1