Materials Research Proceedings最新文献_第8页

A robust identification protocol of flow curve adjusting parameters using uniaxial tensile curve 利用单轴拉伸曲线对流量曲线调整参数进行稳健识别的方案

Materials Research Proceedings Pub Date : 2024-05-15 DOI: 10.21741/9781644903131-243

Xavier Lemoine

{"title":"A robust identification protocol of flow curve adjusting parameters using uniaxial tensile curve","authors":"Xavier Lemoine","doi":"10.21741/9781644903131-243","DOIUrl":"https://doi.org/10.21741/9781644903131-243","url":null,"abstract":"Abstract. ArcelorMittal is constantly developing new steel grades to enable the automotive industry to offer safer, lighter, and more environmentally friendly vehicles. These new grades include advanced high-strength steels (AHSS) and Ultra High Strength steels (UHSS) having for some of them lower uniform elongation (UE) than conventional drawing steels. This particularity needs to be considered for an accurate formability prediction in sheet forming numerical simulations. One of these difficulties is the effect of the relatively low uniform elongation on the identification of the parameters of the isotropic hardening model. Various experimental tests can be used to reach the large plastic deformation (hydraulic bulge test, stack compression test, shear test, torsion test or plane strain compression test). The identification protocol of ArcelorMittal for hardening models is based solely on stress-strain curves determined in uniaxial tension. The Exp_S hardening law (TU experimental values before UE%, Swift extension above) was validated by comparison with the stress-strain curves obtained from measurements of experimental tests reaching large strains.","PeriodicalId":515987,"journal":{"name":"Materials Research Proceedings","volume":"19 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140971668","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

Experimental, analytical, and numerical analysis of the copper wire multi-pass drawing process 铜线多道拉拔工艺的实验、分析和数值分析

Materials Research Proceedings Pub Date : 2024-05-15 DOI: 10.21741/9781644903131-82

S. Di Donato

{"title":"Experimental, analytical, and numerical analysis of the copper wire multi-pass drawing process","authors":"S. Di Donato","doi":"10.21741/9781644903131-82","DOIUrl":"https://doi.org/10.21741/9781644903131-82","url":null,"abstract":"Abstract. In the cold wire drawing process, the stress acting on the wire depends on process parameters, as well as on the material flow stress, including the strain-hardening that occurs step by step. It is essential to ensure that the stress applied to the wire at the exit of the die remains below the material's yield stress, to prevent wire necking and fracture. Industrially, the process is carried out continuously using multi-step-multi-wires machines that deform the material to high strain at elevated strain rate values. The application of analytical models for evaluating the stresses acting on the wire assumes simplified boundary conditions, such as an average distribution of strain and strain rate within the die. Further studies are necessary, considering the entire multi-pass industrial case and involving finite element simulation, which is today the main tool for optimizing industrial processes. In this work, the drawing process applied to ETP Pure Copper (99.9% in weight) is analyzed experimentally, analytically, and numerically. The material was characterized by torsion tests and experimental drawing tests were carried out on four steps of the process. Through the analysis of the different analytical methods, it was shown that a careful evaluation of the friction coefficient values is necessary to reduce errors in estimating the drawing forces. The aim is to provide a reliable numerical model for predicting the stress acting on the wire during the multi-pass drawing process, through an appropriate characterization of the material flow stress and an evaluation of the friction model.","PeriodicalId":515987,"journal":{"name":"Materials Research Proceedings","volume":"88 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140973190","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

Influence of toolpath strategies on the final accuracy and thickness distributions in multi-stage incremental forming 刀具路径策略对多级增量成形中最终精度和厚度分布的影响

Materials Research Proceedings Pub Date : 2024-05-15 DOI: 10.21741/9781644903131-166

M. Vanhulst

引用次数: 0

Numerical and experimental analysis of struts joined by electromagnetic forming for aircraft applications 飞机应用中通过电磁成形连接支柱的数值和实验分析

Materials Research Proceedings Pub Date : 2024-05-15 DOI: 10.21741/9781644903131-153

V. Psyk

{"title":"Numerical and experimental analysis of struts joined by electromagnetic forming for aircraft applications","authors":"V. Psyk","doi":"10.21741/9781644903131-153","DOIUrl":"https://doi.org/10.21741/9781644903131-153","url":null,"abstract":"Abstract. Joining by electromagnetic forming can provide high-strength connections of tubes and connector parts from different materials. In order to qualify this technology for manufacturing components made of high-strength aluminum alloys typically used in aircraft manufacturing a parameter study was performed on form fit joining of tubes (outer diameter: 70 mm, wall thickness: 1.6 mm) and mandrels (diameter: 66.6 mm) both made of EN AW-2024 (T351). Since some aircraft applications, e. g. the so-called z-struts, which support the passenger floor of the airplane, are related to high axial compressive loads and medium axial tensile loads, this load scenario was considered. In order to increase especially the compressive load-bearing capacity, joint configurations featuring direct support of the tube end via a step or a shoulder of the joining partner were designed and investigated. The axial support can increase the transferable compressive load, while the tensile load remains largely unaffected. Attention must be paid to the gap between tube end and axial support, which cannot be fully avoided due to axial material flow during the electromagnetic joining process. Bending the tube end into a groove providing axial support of the tube end enables compressive load-bearing capacities, which can approximate the strength of the tube material. Here, increasing bending angles improve the load-bearing capacity under tensile force, but reduce the transferable compressive load. Multiple groove configurations can provide acceptable load bearing capacity considering tensile and compressive load. Numerical simulation can predict the general behavior of components joined by electromagnetic forming, help to understand the damage mechanisms of the joint and allow identifying trends for joint design.","PeriodicalId":515987,"journal":{"name":"Materials Research Proceedings","volume":"89 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140973181","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

The continuous fibre injection process (CFIP): A novel approach to lightweight design of multi-material structural components 连续纤维注射工艺（CFIP）：多材料结构部件轻量化设计的新方法

Materials Research Proceedings Pub Date : 2024-05-15 DOI: 10.21741/9781644903131-181

Marc Crescenti

{"title":"The continuous fibre injection process (CFIP): A novel approach to lightweight design of multi-material structural components","authors":"Marc Crescenti","doi":"10.21741/9781644903131-181","DOIUrl":"https://doi.org/10.21741/9781644903131-181","url":null,"abstract":"Abstract. The combination of different materials enables to achieve highly efficient structures in terms of lightweight and mechanical performance, as well as in terms of manufacturing costs. However, the weakest points of these structures use to be the joints. For this reason, in the last years, many studies have dealt with joining technologies for dissimilar materials. The Reinforce3D’s Continuous Fibre Injection Process (CFIP) technology delivers a unique method to join dissimilar materials. CFIP is based on injecting continuous fibers, such as carbon fibers, simultaneously with liquid resin into tubular cavities within the part. Then the resin is cured and the final composite part is obtained. This work focuses on the characterization of the mechanical properties of CFIP-made specimens and describes the potential lightweight benefits of the technology. Mechanical tests were performed under tensile and bending conditions following standardized methods. The lightweight potential is addressed by developing a representative case study by implementing finite element and topology optimization methods. The results of this case study were finally compared with a monomaterial equivalent component (aluminium) demonstrating the improvement that CFIP provides in terms of lightweight while keeping the strength.","PeriodicalId":515987,"journal":{"name":"Materials Research Proceedings","volume":"72 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140973715","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

Experimental characterisation for compression moulding of hybrid architecture composites using reclaimed prepreg manufacturing waste 利用回收的预浸料生产废料对混合结构复合材料进行压缩成型的实验表征

Materials Research Proceedings Pub Date : 2024-05-15 DOI: 10.21741/9781644903131-70

Connie Qian

引用次数: 0

Influence of the sheet thickness variability on the deep drawing of a cylindrical cup 板材厚度变化对圆柱形杯深冲的影响

Materials Research Proceedings Pub Date : 2024-05-15 DOI: 10.21741/9781644903131-202

A.F.G. Pereira

引用次数: 0

Simulation and monitoring of the infusion of thick composites with thermoplastic acrylic resin 模拟和监测热塑性丙烯酸树脂厚复合材料的灌注过程

Materials Research Proceedings Pub Date : 2024-05-15 DOI: 10.21741/9781644903131-64

N. Siddig

{"title":"Simulation and monitoring of the infusion of thick composites with thermoplastic acrylic resin","authors":"N. Siddig","doi":"10.21741/9781644903131-64","DOIUrl":"https://doi.org/10.21741/9781644903131-64","url":null,"abstract":"Abstract. The ZEBRA project aims to advance the circular economy by creating wind turbine blades that can be completely recycled. Currently, Wind turbine blades are fabricated through Vacuum-Assisted Resin Infusion (VARI) using thermoset resins. In this endeavor, the recyclable thermoplastic resin Elium® from Arkema is utilized as a sustainable alternative to traditional thermoset resins. The production of thick and sizable components using reactive resins presents various intertwined physical aspects and difficulties, notably concerning potential overheating during the Elium® radical polymerization process. The optimization of this process necessitates the use of simulation to save the expensive time and effort caused by the experiments. However, to be reliable, these numerical methods must be validated to allow accurate predictions for potential defects with thick and complex parts. The challenge lies in flow front detection in the through-thickness direction. In this work, infusion tests were conducted for thick parts in a testing bench instrumented with a robust monitoring system. QRS sensors are placed through the part thickness to detect the front arrival instantaneously. The simulations are compared and validated to the signals of the QRS sensors for validation. Then the model was used to predict the flow behavior for more complex parts. A 3D flow is observed by the differences in permeability between the flow medium and the fabric, which induces a high difference in resin arrival times to the sensors depending on the position of sensors through the part thickness. The flow simulations showed a good approximation of the experimental results. However, deviations are observed in the flow front position, caused by the disturbance induced by the presence of the sensors.","PeriodicalId":515987,"journal":{"name":"Materials Research Proceedings","volume":"36 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140972672","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

Influence of cold rolled surface structures with undercuts for interlocking joints on bending processes 用于联锁接头的带暗槽冷轧表面结构对弯曲工艺的影响

Materials Research Proceedings Pub Date : 2024-05-15 DOI: 10.21741/9781644903131-186

A. Ringel

{"title":"Influence of cold rolled surface structures with undercuts for interlocking joints on bending processes","authors":"A. Ringel","doi":"10.21741/9781644903131-186","DOIUrl":"https://doi.org/10.21741/9781644903131-186","url":null,"abstract":"Abstract. Lightweight design is one of the methods to reduce CO2 emissions and optimize energy efficiency in the transportation sector. The main motivation of this study arise from weight reduction through multi-material design with the materials commonly used in the automotive industry, steel and aluminum. Metallurgical bonding of steel and aluminum carries the risk of forming brittle intermetallic phases. Hence, new joining techniques such as joining by forming or casting are promising for these multi-material components. Previously, a hybrid component method was presented using channel-like surface structures with undercuts on a steel sheet created in a modified cold rolling process. In a subsequent high-pressure die casting, the channels were filled with aluminum melt, forming an interlocking connection as it solidified. As automotive components demand increased complexity, the bending of the structured sheet before casting was investigated. This study aims to analyze how the surface structure affects the bending process. Numerical simulations and experiments were used to investigate the effect on the maximum bending force, the resulting bending angle and springback. Therefore, the parameters bending angle, bending radius, and the lateral or longitudinal orientations of the channel structure on either sides of the bend were taken into account. The results showed a strong influence of the lateral and longitudinal orientation on the maximum bending force. Furthermore, a minor effect of the bending radius on the force and springback was found.","PeriodicalId":515987,"journal":{"name":"Materials Research Proceedings","volume":"38 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140975867","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

Microstructure refinement by a novel friction-based processing on Mg-Zn-Ca alloy 通过新型摩擦加工细化镁锌钴合金的微观结构

Materials Research Proceedings Pub Date : 2024-05-15 DOI: 10.21741/9781644903131-224

Ting Chen

引用次数: 0