Flexural strength of fused filament fabricated (FFF) PLA parts on an open-source 3D printer

doi:10.1007/s40436-018-0237-6

Advances in Manufacturing ›› 2018, Vol. 6 ›› Issue (4): 430-441.doi: 10.1007/s40436-018-0237-6

Flexural strength of fused filament fabricated (FFF) PLA parts on an open-source 3D printer

Shilpesh R. Rajpurohit, Harshit K. Dave

Department of Mechanical Engineering, S V National Institute of Technology, Surat, Gujarat 395 007, India

收稿日期:2018-07-03 修回日期:2018-10-22 出版日期:2018-12-25 发布日期:2018-12-08
通讯作者: Harshit K.Dave,harshitkumar@yahoo.com E-mail:harshitkumar@yahoo.com

Flexural strength of fused filament fabricated (FFF) PLA parts on an open-source 3D printer

Shilpesh R. Rajpurohit, Harshit K. Dave

Department of Mechanical Engineering, S V National Institute of Technology, Surat, Gujarat 395 007, India

Received:2018-07-03 Revised:2018-10-22 Online:2018-12-25 Published:2018-12-08
Contact: Harshit K.Dave,harshitkumar@yahoo.com E-mail:harshitkumar@yahoo.com
Supported by:
Michael Löser would like to thank the German Research Foundation (DFG) for their financial support of the presented research project (Grant No. GR 1458/53-1). Andreas Otto acknowledges financial support from the German Research Foundation (DFG) (Grant No. 321138034).

摘要/Abstract

摘要： Fused filament fabrication (FFF) has been widely used to develop prototypes as well as functional parts owing to its capability for creating parts with complex geometries in a short time without the specific requirement of tooling. The mechanical properties of parts produced by FFF exhibit 70%-80% of the mechanical properties of parts produced by injection molding. The mechanical properties of FFF-produced parts are primarily dependent on the selection of various process variables. The mechanical properties of the part can be enhanced through the proper selection of process variables. In the present experimental investigation, the effects of the process variables, viz. raster angle, layer height, and raster width on the flexural properties of FFF-printed polylactic acid (PLA) is studied. The result shows that flexural strength is primarily influenced by layer height followed by raster angle. The sample printed with 100-μm layer height and 0° raster angle exhibits a higher tensile strength. Further, the microscopic examination of the deformed specimen is performed to understand the mode of failure. Specimens printed at different raster angles show different modes of failure.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-018-0237-6

关键词: Fused filament fabrication (FFF), Polylactic acid (PLA), Raster angle, Layer height, Raster width, Flexural strength

Abstract: Fused filament fabrication (FFF) has been widely used to develop prototypes as well as functional parts owing to its capability for creating parts with complex geometries in a short time without the specific requirement of tooling. The mechanical properties of parts produced by FFF exhibit 70%-80% of the mechanical properties of parts produced by injection molding. The mechanical properties of FFF-produced parts are primarily dependent on the selection of various process variables. The mechanical properties of the part can be enhanced through the proper selection of process variables. In the present experimental investigation, the effects of the process variables, viz. raster angle, layer height, and raster width on the flexural properties of FFF-printed polylactic acid (PLA) is studied. The result shows that flexural strength is primarily influenced by layer height followed by raster angle. The sample printed with 100-μm layer height and 0° raster angle exhibits a higher tensile strength. Further, the microscopic examination of the deformed specimen is performed to understand the mode of failure. Specimens printed at different raster angles show different modes of failure.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-018-0237-6

Key words: Fused filament fabrication (FFF), Polylactic acid (PLA), Raster angle, Layer height, Raster width, Flexural strength

Shilpesh R. Rajpurohit, Harshit K. Dave. Flexural strength of fused filament fabricated (FFF) PLA parts on an open-source 3D printer[J]. Advances in Manufacturing, 2018, 6(4): 430-441.

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Flexural strength of fused filament fabricated (FFF) PLA parts on an open-source 3D printer

Flexural strength of fused filament fabricated (FFF) PLA parts on an open-source 3D printer

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