Effect of print orientation using DMLS method on strength of materials

The paper reported the results of a study concerned with the principle of operation of the 3D printing technology using the method of selective sintering of metallic powders, and taking into account their advantages and drawbacks. The principle of the operation of 3D printing technology applying the DMLS (Direct Metal Laser Sintering) method is presented. On the basis of the performed tests, the anisotropy of the printed materials is demonstrated. The reasons responsible for this phenomenon are identified. The paper presents the results of the strength tests which indicate that the crack during the test occur in the building direction of the layers during printing. The results were compiled for two different types of specimens and two different testing machines.

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APPLICATION OF 3D PRINTING TECHNOLOGY FOR RAPID TOOLING IN SHEET METAL FORMING

Fundamental and Applied Problems of Engineering and Technology ◽

10.33979/2073-7408-2020-341-3-20-30 ◽

2020 ◽

Vol 3 ◽

pp. 20-30

Author(s):

M.A. SEREZHKIN ◽

D.O. KLIMYUK ◽

A.I. PLOKHIKH

Keyword(s):

3D Printing ◽

Sheet Metal ◽

Sheet Metal Forming ◽

Metal Forming ◽

Rapid Tooling ◽

Printing Technology ◽

3D Printing Technology ◽

3D Printed ◽

Printed Materials ◽

Printing Parameters

The article presents the study of the application of 3D printing technology for rapid tooling in sheet metal forming for custom or small–lot manufacturing. The main issue of the usage of 3D printing technology for die tooling was discovered. It is proposed to use the method of mathematical modelling to investigate how the printing parameters affect the compressive strength of FDM 3D–printed parts. Using expert research methods, the printing parameters most strongly affecting the strength of products were identified for further experiments. A method for testing the strength of 3D–printed materials has been developed and tested.

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Evaluation of Micro Laser Sintering Metal 3D-Printing Technology for the Development of Waveguide Passive Devices up to 325 GHz

2020 IEEE/MTT-S International Microwave Symposium (IMS) ◽

10.1109/ims30576.2020.9224102 ◽

2020 ◽

Author(s):

V. Fiorese ◽

C. Belem Goncalves ◽

C. del Rio Bocio ◽

D. Titz ◽

F. Gianesello ◽

...

Keyword(s):

3D Printing ◽

Laser Sintering ◽

Printing Technology ◽

3D Printing Technology ◽

Passive Devices ◽

Metal 3D Printing

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Facile preparation of high loading filled PVDF/BaTiO3 piezoelectric composites for selective laser sintering 3D printing

RSC Advances ◽

10.1039/d1ra06915b ◽

2021 ◽

Vol 11 (60) ◽

pp. 37923-37931

Author(s):

Shiping Song ◽

Yijun Li ◽

Qi Wang ◽

Chuhong Zhang

Keyword(s):

3D Printing ◽

Piezoelectric Properties ◽

Selective Laser Sintering ◽

Laser Sintering ◽

High Loading ◽

Piezoelectric Composites ◽

Printing Technology ◽

3D Printing Technology ◽

Facile Preparation

A novel PVDF/BaTiO3 cymbal part with excellent piezoelectric properties and responsiveness is designed and manufactured by selective laser sintering 3D printing technology.

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Flexible Patterns for Soft 3D Printed Fabrications

Symmetry ◽

10.3390/sym11111398 ◽

2019 ◽

Vol 11 (11) ◽

pp. 1398

Author(s):

Kanygul Chynybekova ◽

Soo-Mi Choi

Keyword(s):

3D Printing ◽

Physical Properties ◽

Specific Design ◽

Printing Technology ◽

3D Printing Technology ◽

Different Types ◽

3D Printed ◽

Object Area ◽

Application Requirements

Rapid improvements in 3D printing technology bring about new possibilities to print with different types of printing materials. New studies have investigated and presented various printing methodologies. However, the majority of these studies are targeted at experimenting with rigid 3D printed objects rather than soft 3D printed fabrications. The presented research considers soft 3D printing, particularly focusing on the development of flexible patterns based on non-homogenous hybrid honeycombs for the interior of 3D printed objects to improve their flexibility and additional stretchability including the lightweight interior. After decomposing the area of an object into regions, our method creates a specific design where patterns are positioned at each partitioned region of the object area by connecting opposite sides of the boundary. The number of regions is determined according to application requirements or by user demands. The current study provides the results of conducted experiments. The aim of this research is to create flexible, stretchable, and lightweight soft 3D printed objects by exploring their deformation responses under tension, compression and flexure tests. This method generates soft 3D printed fabrications with physical properties that meet user demands.

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