Analytical and experimental investigation on elastic modulus of reinforced additive manufactured structure
Analytical and experimental investigation on elastic modulus of reinforced additive manufactured structure
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DOI：
10.1016/j.matdes.2014.10.029
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发表时间：
2015-02
影响因子：
8.4
通讯作者：
M. Sugavaneswaran;G. Arumaikkannu
中科院分区：
文献类型：
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作者：
M. Sugavaneswaran;G. Arumaikkannu
增材制造（AM）技术由于具有大规模定制制造的优良特性，已被广泛应用于各种工程应用中。聚喷3d打印（3DP）是众多增材制造技术中的一种，以制造多种材料的零件而闻名。同时，多喷3d打印零件的强度和刚度一般较低，难以用于工程应用。为了最大限度地提高多喷3D打印部件的刚度，本研究探索了在增材制造多材料（AM MM）结构中加入高强度材料作为增强材料的新方法。通过对增材增材结构进行单轴拉伸试验和断口分析，研究了增材增材及其取向对加载方向的影响。实验结果表明，加筋显著提高了弹性模量，且在加筋方向上，弹性模量的提高幅度在6.79% ~ 21.03%之间。在此基础上，提出了基于混合规则（RoM）方程的简单分析方法来预测增强AM结构的弹性模量。分析结果与实验结果的比较表明，两者吻合较好。本文所提出的方法对于预测增材结构的强度具有重要的工程应用价值。
Additive Manufacturing (AM) technique has been utilized in a variety of engineering applications because of its desirable characteristic of mass customized manufacturing. Polyjet 3 Dimensional Printing (3DP) is one among the various AM techniques which is well known for fabrication of part with multiple materials. Meanwhile, strength and stiffness of polyjet 3DP part is typically less and hence it is difficult to use it for engineering applications. To maximize polyjet 3D printed part stiffness, this study explores the novel methodology by incorporating high strength material among the multi materials as reinforcement in Additive Manufactured Multi Material (AM MM) structure. Uni-axial tensile test and fracture surface analysis over reinforced AM structure was carried out to investigate the influence of reinforcement and its orientation with respect to loading direction. The experimental result shows that addition of reinforcement enhanced the elastic modulus significantly as well as improvement in elastic modulus varies between 6.79% and 21.03% with respect to reinforcement orientation. Along with this, we have proposed simpler analytical method based upon Rule of Mixture (RoM) equation to predict the elastic modulus of reinforced AM structure. Comparison of the analytical method results with the experimental results implies that there is a good agreement between them. Methodology proposed in this work could be very useful in the cases of predicting strength of reinforced AM structure for engineering application.