Experimental investigation of effects of build parameters on flexural properties in fused deposition modelling parts
Experimental investigation of effects of build parameters on flexural properties in fused deposition modelling parts
复制标题
DOI：
10.1080/17452759.2017.1314117
复制
发表时间：
2017-01-01
影响因子：
10.6
通讯作者：
Matlack, Mike
中科院分区：
文献类型：
--
作者：
Motaparti, Krishna P.;Taylor, Gregory;Matlack, Mike
增材制造是一组用于通过以逐层方式沉积材料来构建组件的制造技术。熔融沉积成型（FDM）是增材制造技术之一，广泛用于热塑性部件的原型制作和生产应用。在承载应用中，弯曲力和压缩力通常共存。为了避免在这些载荷下失效，有必要研究FDM部件的力学性能。本研究的主要重点是研究FDM组件的弯曲性能，并了解它们对各种构建参数的依赖性。从一系列弯曲测试中已经观察到，FDM部件具有各向异性特性，并且这种各向异性不是由于所使用的材料，而是由于制造过程本身。在这项研究中，Ultem 9085被用作制造试样的材料，其构建参数包括构建方向、光栅角度和负气隙。采用全因子实验设计研究这些构建参数对试样弯曲性能的单独和组合影响。在试样制造中使用了实心和稀疏构造样式。研究的弯曲性能包括弯曲屈服强度、弯曲模量、弯曲强度/质量比和弯曲模量/质量比。定性观察和推理是用来理解弯曲性能是如何影响的构建参数。
Additive manufacturing is a group of fabrication techniques that is used to build components by depositing material in a layer-by-layer manner. Fused deposition modelling (FDM) is one of the additive manufacturing techniques which is widely used for prototyping and production applications of thermoplastic components. In load-bearing applications, flexural and compression forces often coexist. In order to avoid failure under these loads, it is essential to study the mechanical properties of FDM components. The main focus of this research is to study the flexural properties of FDM components and to comprehend their dependence on various build parameters. It has been observed from a series of flexural tests that FDM parts have anisotropic properties and this anisotropy was not due to the material in use, but due to the fabrication process itself. In this study Ultem 9085 is used as the material to fabricate coupons with variations in build parameters including build direction, raster angle and negative air gap. A fullfactorial experimental design was used to study the individual and combined effects of these build parameters on the flexural properties of the coupons. Solid and sparse-build styles were used in the coupon fabrication. Flexural properties investigated include flexural yield strength, flexural modulus, flexural strength/mass ratio and flexural modulus/mass ratio. Qualitative observation and reasoning is used to comprehend how the flexural properties are affected by the build parameters.