Advanced Manufacturing: Polymer & Composites Science最新文献_第9页

A three-dimensional transient model for heat transfer in thermoplastic composites during continuous resistance welding 热塑性复合材料连续电阻焊过程的三维瞬态传热模型

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2017-01-02 DOI: 10.1080/20550340.2017.1311094

Imad Zammar, M. Huq, I. Mantegh, A. Yousefpour, M. Ahmadi

{"title":"A three-dimensional transient model for heat transfer in thermoplastic composites during continuous resistance welding","authors":"Imad Zammar, M. Huq, I. Mantegh, A. Yousefpour, M. Ahmadi","doi":"10.1080/20550340.2017.1311094","DOIUrl":"https://doi.org/10.1080/20550340.2017.1311094","url":null,"abstract":"Abstract The resistance welding technique for thermoplastic composites (TPCs) entails melting the TPC polymer at the joint interface using heat generated by resistive (Joule) heating of a conductive mesh or heating element placed between the surfaces to be welded. The continuous resistance welding (CRW) is an automated large-scale resistance welding technique that consists of a moving voltage source along the heating element creating a continuous weld along its path. This paper presents a transient model that is developed to predict the heat transfer in TPCs in all three dimensions during the CRW process. The model is finite element in nature and includes both the resistive and thermal conductivity behaviors of the material involved. The significance of this modeling approach is that it captures the movement of the electrical connection, as well as the nonuniform distribution of the current and resistive heating along the length and width of the weld seam. The modeling results are compared with experimental data obtained by thermocouples and an infrared camera, and exhibit solid conformance for predicting the trend of variations in weld temperature.","PeriodicalId":7243,"journal":{"name":"Advanced Manufacturing: Polymer & Composites Science","volume":"47 1","pages":"32 - 41"},"PeriodicalIF":0.0,"publicationDate":"2017-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90885124","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: 5

Analysis of pultrusion process for thick glass/polyester composites: transverse shear stress formations 厚玻璃/聚酯复合材料拉挤过程分析:横向剪切应力形成

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2016-10-01 DOI: 10.1080/20550340.2016.1269037

I. Baran

引用次数: 11

Maximizing the out-of-plane-permeability of preforms manufactured by dry fiber placement 最大限度地提高干纤维预制体的面外渗透性

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2016-10-01 DOI: 10.1080/20550340.2016.1260900

Oliver Rimmel, D. Becker, P. Mitschang

{"title":"Maximizing the out-of-plane-permeability of preforms manufactured by dry fiber placement","authors":"Oliver Rimmel, D. Becker, P. Mitschang","doi":"10.1080/20550340.2016.1260900","DOIUrl":"https://doi.org/10.1080/20550340.2016.1260900","url":null,"abstract":"Abstract Dry fiber placement (DFP) is a technology which enables outstandingly high mechanical performance of composite parts as preform structures with load-related fiber orientations can be created with minimum of fiber crimp. Furthermore, DFP has high cost-saving potential due to minimum material wastage during production. Recently, the efficiency has been further improved using an online binder application system, allowing the direct usage of untreated rovings instead of pre-designed rovings with binder applied by the manufacturer. Nevertheless, the poor impregnation behavior of DFP-preforms during liquid composite molding processing methods remains a main challenge. Encouraging an out-of-plane impregnation, e.g. by using a vacuum-assisted or compression resin transfer molding process, reduces the flow length within the preform and is a first step toward reducing cycle times. However, further improvements are required in order to apply DFP-preforming methods in serial production. Within this study influences on the out-of-plane permeability of DFP-preforms were investigated. The considered parameters were related to the material (e.g. binder amount) as well as the layup process and subsequent process steps.","PeriodicalId":7243,"journal":{"name":"Advanced Manufacturing: Polymer & Composites Science","volume":"20 1","pages":"102 - 93"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79115717","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: 27

A dry aligning method of discontinuous carbon fibers and improvement of mechanical properties of discontinuous fiber composites 一种不连续碳纤维的干式配准方法及改进不连续纤维复合材料的力学性能

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2016-10-01 DOI: 10.1080/20550340.2016.1265693

T. Miyake, Satoshi Imaeda

{"title":"A dry aligning method of discontinuous carbon fibers and improvement of mechanical properties of discontinuous fiber composites","authors":"T. Miyake, Satoshi Imaeda","doi":"10.1080/20550340.2016.1265693","DOIUrl":"https://doi.org/10.1080/20550340.2016.1265693","url":null,"abstract":"Abstract A novel method for dry alignment of discontinuous carbon fibers, such as recycled carbon fibers was developed by the modification of the yarn manufacturing process. In order to achieve high production rate and application for long fibers, fluffy synthetic fibers were used as the suspending and carrying media for discontinuous carbon fibers instead of a fluid medium generally used. Using the mechanical interaction in the dry alignment method, a mixture of 200 mm long discontinuous carbon fibers and fluffy polypropylene fibers was fabricated into an aligned and homogeneously comingled sliver by drafting. Then, the sliver was spun into yarn and an aligned yarn preform was obtained. Composites, with approximately 70% of the fibers aligned within an angle of ±14° with respect to the drafting direction, were successfully produced from the preform of the aligned spun yarn. The tensile modulus of the composite specimen along the aligned direction was about 10 times larger than that along the transverse direction, and about 3.5 times larger than that for the specimens obtained from the same yarn with random orientation.","PeriodicalId":7243,"journal":{"name":"Advanced Manufacturing: Polymer & Composites Science","volume":"107 1","pages":"117 - 123"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77095433","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: 16

Zero-flow: a novel approach to continuous ultrasonic welding of CF/PPS thermoplastic composite plates 零流:CF/PPS热塑性复合板材连续超声焊接的新方法

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2016-10-01 DOI: 10.1080/20550340.2016.1253968

Frank Senders, M. V. van Beurden, G. Palardy, I. F. Villegas

引用次数: 37

Study on the validation of ring filament winding methods for unidirectional preform ply manufacturing 环形长丝缠绕方法在单向预制板材制造中的验证研究

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2016-10-01 DOI: 10.1080/20550340.2016.1262090

F. Finkenwerder, M. Geistbeck, P. Middendorf

{"title":"Study on the validation of ring filament winding methods for unidirectional preform ply manufacturing","authors":"F. Finkenwerder, M. Geistbeck, P. Middendorf","doi":"10.1080/20550340.2016.1262090","DOIUrl":"https://doi.org/10.1080/20550340.2016.1262090","url":null,"abstract":"Abstract Ring filament winding enables processing of continuous fibers for manufacturing unidirectional non-crimp unidirectional preform plies on straight-, curved-, or closed-mandrel geometries. However, unidirectional processing of tows can lead to increased lateral tow slippage. The objective of the present study is thus to validate unidirectional winding methods for ring filament winding, performing geodesic and non-geodesic trajectories analytically and experimentally. Implementation of geodesic paths investigates the influence of the tensile force and take-up velocity on the winding angle reproducibility. Non-geodesic winding paths are conducted here dependent on winding methods, slippage coefficients, and the mandrel’s surface materials, evidencing the occurrence of lateral tow slippage by measurements of nip-point forces. Findings indicate an excellent reproducibility of geodesic paths independent of the process velocity. Non-geodesic paths were partially validated because of the occurrence of lateral tape-slippage and a tape side-inclination effect, correlating an increased stick behavior to higher local normal pressure.","PeriodicalId":7243,"journal":{"name":"Advanced Manufacturing: Polymer & Composites Science","volume":"32 1","pages":"103 - 116"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79361193","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: 5

The manufacture of honeycomb cores using Fused Deposition Modeling 利用熔融沉积模型制造蜂窝芯

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2016-06-26 DOI: 10.1080/20550340.2017.1306337

D. Pollard, D. Pollard, C. Ward, G. Herrmann, J. Etches

{"title":"The manufacture of honeycomb cores using Fused Deposition Modeling","authors":"D. Pollard, D. Pollard, C. Ward, G. Herrmann, J. Etches","doi":"10.1080/20550340.2017.1306337","DOIUrl":"https://doi.org/10.1080/20550340.2017.1306337","url":null,"abstract":"Abstract Sandwich panels are used in many industries for the advantageous properties of high stiffness, good strength to weight ratio, and impact resistance. This paper investigates properties of thin-walled cores manufactured through Fused Deposition Modeling (FDM); a process which, through a wider design space, could improve the functionality of sandwich panels. The bond strength between the layers of thin walls manufactured through FDM was evaluated through tensile testing. To measure the effect of modified manufacturing speeds, wall thicknesses were varied through the flow rate and nozzle speed. Honeycomb cores using FDM were produced with different toolpaths, and compared with an example of an industry standard Nomex honeycomb core. During tensile testing, thick-walled FDM components exhibited a more ductile failure with a lower yield point when compared to thinner specimens. The ultimate tensile stress remained constant across samples within each of the tested ABS and PLA polymers used. Honeycomb cores produced using FDM were found to have a higher compressive failure force than Nomex honeycomb, and a lower specific strength. The force–displacement curves of compressive failure show a ductile response for thick specimens, consistent with the previous result. These results, combined with the increased flexibility of additive manufacture technologies, could provide a method of manufacturing high strength cores with complex geometry.","PeriodicalId":7243,"journal":{"name":"Advanced Manufacturing: Polymer & Composites Science","volume":"133 1","pages":"21 - 31"},"PeriodicalIF":0.0,"publicationDate":"2016-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75257740","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: 42

Evolution of viscoelastic behavior of a curing LY5052 epoxy resin in the glassy state 固化LY5052环氧树脂玻璃态粘弹性行为演变

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2016-04-02 DOI: 10.1080/20550340.2016.1236223

S. Saseendran, M. Wysocki, J. Varna

引用次数: 23

Effect of two types of graphene nanoplatelets on the physico–mechanical properties of linear low–density polyethylene composites 两种石墨烯纳米片对线性低密度聚乙烯复合材料物理力学性能的影响

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2016-04-02 DOI: 10.1080/20550340.2016.1235768

P. Noorunnisa Khanam, M. AlMaadeed, M. Ouederni, B. Mayoral, A. Hamilton, D. Sun

引用次数: 25

Experimental investigation of delamination and surface roughness in the drilling of GFRP composite material with different drills 不同钻头对GFRP复合材料钻孔分层和表面粗糙度的实验研究

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2016-04-02 DOI: 10.1080/20550340.2016.1187434

Dhiraj Kumar, K. Singh, R. Zitoune

引用次数: 64