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首页> 外文期刊>Rapid prototyping journal >Deposition direction-dependent failure criteria for fused deposition modeling polycarbonate
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Deposition direction-dependent failure criteria for fused deposition modeling polycarbonate

机译：熔融沉积建模聚碳酸酯的与沉积方向有关的破坏准则

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摘要

Purpose - The purpose of this study is to explore the dependence of material properties and failure criteria for fused deposition modeling (FDM) polycarbonate on raster orientation. Design/methodology/approach - Tension, hardness and density measurements were conducted on a range of specimens at raster angles between 0 and 90° at 15° intervals. Specimens were manufactured so the raster angle was constant throughout each specimen (no rotation between adjacent layers). The yield strength, tensile strength, per cent elongation, elastic modulus, hardness and density of the material were measured as a function of raster angle. The orientation dependence of the properties was then analyzed and used to motivate a failure mechanism map for the material. Findings - The properties of the material were found to be highly orientation-dependent. The variations in mechanical properties were explained to first order using a failure mechanism map similar to those generated for fiber-reinforced composites. Originality/value - In addition to providing valuable experimental data for FDM polycarbonate, the study proposes micro-mechanisms of failure that appear to explain and capture the angular variation of strength with raster orientation. The fact that analysis methods which have been used for composites appear to apply to FDM materials suggests rich areas for future exploration.
机译：目的-这项研究的目的是探索熔融沉积建模（FDM）聚碳酸酯的材料特性和破坏准则对光栅方向的依赖性。设计/方法/方法-在一系列样品上以15°的间隔在0到90°的光栅角下进行拉伸，硬度和密度测量。制作样品时，每个样品的光栅角都是恒定的（相邻层之间没有旋转）。测量材料的屈服强度，抗张强度，伸长率，弹性模量，硬度和密度与光栅角的关系。然后分析属性的方向依赖性，并将其用于激发材料的失效机理图。发现-发现材料的特性高度依赖于方向。使用与纤维增强复合材料相似的破坏机理图，将力学性能的变化解释为一级。原创性/价值-除了为FDM聚碳酸酯提供有价值的实验数据外，该研究还提出了破坏的微观机制，这些机制似乎可以解释并捕获光栅取向强度的角度变化。用于复合材料的分析方法似乎适用于FDM材料这一事实表明，未来的勘探领域十分广阔。

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