Advanced Manufacturing: Polymer & Composites Science最新文献_第10页

Holistic modeling of composites manufacturing using poromechanics 基于孔隙力学的复合材料制造整体建模

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2016-01-02 DOI: 10.1080/20550340.2016.1141457

M. Rouhi, M. Wysocki, R. Larsson

{"title":"Holistic modeling of composites manufacturing using poromechanics","authors":"M. Rouhi, M. Wysocki, R. Larsson","doi":"10.1080/20550340.2016.1141457","DOIUrl":"https://doi.org/10.1080/20550340.2016.1141457","url":null,"abstract":"Abstract In the present paper, we present a novel finite-element method capable of handling most of the physics arising in the resin wet-out step for any composite system and processing case. The method is based on a compressible two-phase continuum formulation where a key feature is to model the involved physics via innovative use of the compressibility of the phases. On the one hand, the fluid-phase compressibility is used to capture the physics of the advancing resin front as well as the physics behind the flow front. On the other hand, solid-phase compressibility is used to model micro-infiltration of the resin and the corresponding preform compaction, essentially considered as a fluid sink problem. Finally, the generic porous media model is formulated in the finite strain regime. The model is implemented and demonstrated for different manufacturing methods and the results with respect to each example are presented. The degree of saturation, pressure distribution, preform deformation, and reaction forces are some of the post-processed results for different manufacturing methods. The ultimate goal of this contribution is to establish a unified generic and general simulation tool for structural (long fiber) composite processing where, to this date, there is no single FE-based tool available commercially for this purpose.","PeriodicalId":7243,"journal":{"name":"Advanced Manufacturing: Polymer & Composites Science","volume":"93 1","pages":"14 - 26"},"PeriodicalIF":0.0,"publicationDate":"2016-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82093651","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: 7

An evaluation of the reproducibility of ultrasonic sensor-based out-of-plane permeability measurements: a benchmarking study 基于超声传感器的面外渗透率测量再现性的评估:基准研究

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2016-01-02 DOI: 10.1080/20550340.2016.1182783

D. Becker, H. Grössing, S. Konstantopoulos, E. Fauster, P. Mitschang, R. Schledjewski

{"title":"An evaluation of the reproducibility of ultrasonic sensor-based out-of-plane permeability measurements: a benchmarking study","authors":"D. Becker, H. Grössing, S. Konstantopoulos, E. Fauster, P. Mitschang, R. Schledjewski","doi":"10.1080/20550340.2016.1182783","DOIUrl":"https://doi.org/10.1080/20550340.2016.1182783","url":null,"abstract":"Abstract Research concerning the measurement of the permeability of fabrics for polymer matrix composites has been ongoing since several decades, but remains in the focus of applied research for liquid composite molding. Today, several systems and technologies for the measurement of in- and out-of-plane permeability are available, but still no approach has gained acceptance as a common standard. A main requirement for reliable permeability measurement technology is the reproducibility of results when comparing different characterization systems. In this context, benchmark studies are an appropriate method to evaluate the reproducibility of a technology. This study presents a benchmark on unsaturated out-of-plane permeability measurement systems based on flow front monitoring via ultrasonic sensors. Two corresponding systems are compared in the study comprising carbon and glass wovens as well as non-crimp fabrics. The out-of-plane permeability was measured with both systems at three different levels of fiber volume content and three repetitive measurements. The results gained with the systems showed good compliance with relative deviation of the permeability values mostly below 50%. Textile-induced inhomogeneities and varying measurement parameters, e.g. injection pressure, were found to be main reasons for the deviations.","PeriodicalId":7243,"journal":{"name":"Advanced Manufacturing: Polymer & Composites Science","volume":"30 1","pages":"34 - 45"},"PeriodicalIF":0.0,"publicationDate":"2016-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75818255","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: 11

Experimental verification of Re-Fib method for recycling fibres from composites Re-Fib法回收复合材料纤维的实验验证

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2016-01-02 DOI: 10.1080/20550340.2016.1165439

G. Gong, Kurt S. Olofsson, B. Nyström, M. Juntikka, Henrik Oxfall, K. Lindqvist

引用次数: 2

Review of cost estimation: methods and models for aerospace composite manufacturing 成本估算综述:航空航天复合材料制造的方法和模型

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2016-01-02 DOI: 10.1080/20550340.2016.1154642

Christian Hueber, K. Horejsi, Ralf Schledjewski

引用次数: 57

Exploring the discrete tools used by laminators in composites manufacturing: application of novel concept 探索复合材料制造中层压机使用的离散工具:新概念的应用

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2015-10-02 DOI: 10.1080/20550340.2015.1105613

H. Jones, A. Chatzimichali, R. Middleton, K. Potter, C. Ward

{"title":"Exploring the discrete tools used by laminators in composites manufacturing: application of novel concept","authors":"H. Jones, A. Chatzimichali, R. Middleton, K. Potter, C. Ward","doi":"10.1080/20550340.2015.1105613","DOIUrl":"https://doi.org/10.1080/20550340.2015.1105613","url":null,"abstract":"Abstract This research investigates the handheld and often personally owned tools used by laminators to form advanced composites into components for aerospace, defense, and autosport; and reports on the application of a novel concept. The lack of formal knowledge that surrounds the existence and use of these tools presents an opportunity to explore what significance they have for process standardization and composites’ design and manufacture. The paper presents results from layup trials that were performed to test a prototyped tool, designed with user-centered and geometry-driven research in mind. The trials showed tool use is aligned with the laminator’s goals for the layup task; and suggest that it is also used as the laminator’s method for reporting quality feedback. The trials also raised questions about why the laminators habitually use their tools and the necessity of supporting a laminator through the decision processes involved in a layup task. This suggests the development of a prototyped tool can be of significant benefit in the realm of skills and training. Graphical abstract","PeriodicalId":7243,"journal":{"name":"Advanced Manufacturing: Polymer & Composites Science","volume":"13 1","pages":"185 - 198"},"PeriodicalIF":0.0,"publicationDate":"2015-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81933976","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: 7

A simplified damage prediction framework for milling of unidirectional carbon fiber-reinforced plastics 单向碳纤维增强塑料铣削损伤预测简化框架

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2015-10-02 DOI: 10.1080/20550340.2015.1117747

F. Islam, J. Ramkumar, A. S. Milani

{"title":"A simplified damage prediction framework for milling of unidirectional carbon fiber-reinforced plastics","authors":"F. Islam, J. Ramkumar, A. S. Milani","doi":"10.1080/20550340.2015.1117747","DOIUrl":"https://doi.org/10.1080/20550340.2015.1117747","url":null,"abstract":"Abstract This article presents a simple framework for predicting the occurrence of delamination during milling of unidirectional carbon-fiber-reinforced plastics (CFRPs), based on a concept of effective critical cutting zone. To validate the concept, sets of milling experiments were conducted on unidirectional CFRP samples of varying fiber orientations and the delamination signature was measured through microscopic images. By observing the damage extent for different fiber orientation angles and different fiber cutting angles for up-milled and down-milled edges, and correlating them with different material removal mechanisms, it has been shown that the damage mainly depends on the portion of the fiber cutting angles that lie within the effective critical milling zone. Both the delamination and the normal cutting forces were found to be strongly dependent on the range of angles in this zone. In addition, it is shown that the cutting force may be used as a good approximation to determine the effect of machining/process parameters on the ensuing delamination damage during milling of CFRPs. For the tested samples, the normal cutting force decreased with an increase in the cutting speed and it increased with an increase in the feed rate of the cutting tool.","PeriodicalId":7243,"journal":{"name":"Advanced Manufacturing: Polymer & Composites Science","volume":"15 4 1","pages":"175 - 184"},"PeriodicalIF":0.0,"publicationDate":"2015-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90243196","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: 14

Investigation into the mechanical properties of thermoplastic composites containing holes machined by a thermally-assisted piercing (TAP) process 热辅助穿孔(TAP)工艺加工含孔热塑性复合材料的力学性能研究

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2015-10-02 DOI: 10.1080/20550340.2015.1117748

N. Brown, C. Worrall, S. Ogin, P. Smith

引用次数: 12

Hand layup: understanding the manual process 手上篮:了解手工上篮过程

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2015-07-03 DOI: 10.1080/20550340.2015.1114801

M. Elkington, D. Bloom, C. Ward, A. Chatzimichali, K. Potter

{"title":"Hand layup: understanding the manual process","authors":"M. Elkington, D. Bloom, C. Ward, A. Chatzimichali, K. Potter","doi":"10.1080/20550340.2015.1114801","DOIUrl":"https://doi.org/10.1080/20550340.2015.1114801","url":null,"abstract":"The hand layup of pre-impregnated woven materials is still a large part of the composite manufacturing industry, requiring the skills and experience of a human workforce to form flat plies into complex shapes. It is capable of producing high performance and complex parts, but can be an expensive and variable process. Despite its importance, there appears to have been very little research into the actual methods and techniques used by workers to manipulate flat sheets of composite material into shape during layup. This work presents the first known detailed study of the approach and techniques used by laminators. Four participants laid up onto 15 different shaped molds that replicated features commonly found on composite components. The actions used in layup were grouped into eight distinct techniques. Use of these techniques across tasks of different geometry, ramp angles, radii and drape path was identified using video analysis techniques from the ergonomics field. This revealed strong links between specific features and techniques, revealing a systematic approach to layup. This has enabled the first step toward producing a design for manufacture knowledge base surrounding hand layup. This could then be used to inform the development of the layup process, improve training methods and assist in the design of future automated solutions. Graphical Abstract","PeriodicalId":7243,"journal":{"name":"Advanced Manufacturing: Polymer & Composites Science","volume":"28 1","pages":"138 - 151"},"PeriodicalIF":0.0,"publicationDate":"2015-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86629866","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: 122

Limit of adhesion coefficient measurement of a unidirectional carbon fabric 单向碳织物粘附系数测量的极限

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2015-07-03 DOI: 10.1080/20550340.2015.1114797

Hugo Aimé, S. Comas-Cardona, C. Binetruy, J. Schell, M. Lacrampe, M. Deléglise-Lagardère

{"title":"Limit of adhesion coefficient measurement of a unidirectional carbon fabric","authors":"Hugo Aimé, S. Comas-Cardona, C. Binetruy, J. Schell, M. Lacrampe, M. Deléglise-Lagardère","doi":"10.1080/20550340.2015.1114797","DOIUrl":"https://doi.org/10.1080/20550340.2015.1114797","url":null,"abstract":"The construction of mesoscopic models of fiber washing effects during the high pressure resin transfer molding (RTM) process with thermoplastic polymers requires the knowledge of the limit of adhesion coefficients between dry and impregnated fabric reinforcement plies and the mold. To measure these coefficients, a new method is described. During RTM process, a preform is placed in the cavity. The mold is closed to reach a given cavity thickness. Therefore, the normal stress applied to the preform can be relaxed before injection. In order to comply with these RTM specificities, the limit of adhesion coefficients are measured on relaxed preforms at given thicknesses. Hence, a first set of compression tests followed by a relaxation step are performed in order to measure the normal stresses the preforms undergo. The relaxation can reduce compression normal stress by 30%. The relaxation is taken into account for the limit of adhesion calculation. Then a second setup has been built in order to measure forces during pull-out of fabric plies inserted between other plies or metallic plates. This method provides mean values of coefficients of limit of adhesion for dry and lubricated preforms and various stacking sequences. These coefficients can be refined so as to take into account the real area of the contact interface for ply/ply and ply/mold configurations. There are also useful in the forming process of dry fabrics when inter-ply sliding occurs. Graphical Abstract","PeriodicalId":7243,"journal":{"name":"Advanced Manufacturing: Polymer & Composites Science","volume":"153 1","pages":"152 - 159"},"PeriodicalIF":0.0,"publicationDate":"2015-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86155533","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

Laser-powered tape placement process – simulation and optimization 激光驱动的胶带放置过程-模拟和优化

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2015-07-03 DOI: 10.1080/20550340.2015.1114798

D. Maurer, P. Mitschang

引用次数: 24