OPTIMAL DESIGN AND ADDITIVE MANUFACTURING OF NOVEL REINFORCING ELEMENTS FOR COMPOSITE MATERIALS

Author(s):  
Francesco Fabbrocino ◽  
Ilenia Farina ◽  
Ada Amendola ◽  
Luciano Feo ◽  
Fernando Fraternali
2021 ◽  
Vol 14 ◽  
Author(s):  
Aniket Yadav ◽  
Piyush Chohan ◽  
Ranvijay Kumar ◽  
Jasgurpreet Singh Chohan ◽  
Raman Kumar

Background: Additive manufacturing is the most famous technology which requires materials or composites to be fabricated with layer by layer deposition strategy. Due to its lower cost, higher accuracy and less material wastage; this technology is used in almost every sector. But in many applications there is a need to alter the properties of a product in a certain direction with the help of some reinforcements. With the use of reinforcements, composite layers can be fabricated using additive manufacturing technique which will enhance the directional properties. A novel apparatus is designed to spray the reinforcement material into the printed structures in a very neat and precise manner. This spray nozzle is fully automated, which works according to tool-paths generated by slicing software. The alternate deposition of layers of reinforcement and build materials helped to fabricate customized composite products. Objective: The objective of present study is to design and analyze the working principle of novel technique which has been developed to fabricate composite materials using additive manufacturing. The apparatus is numerically controlled by computer according to CAD data which facilitates the deposition of alternate layers of reinforcement and matrix material. The major challenges during the design process and function of each component has been explored. Methods: The design process is initiated after comprehensive literature review performed to study previous composite manufacturing processes. The recent patents published by different patent offices of the world are studied in detail and analysis has been used to design a low cost composite fabrication apparatus. A liquid dispensing device comprises a storage tank attached with a pump and microprocessor. The microprocessor receives the signal from the computer as per tool paths generated by slicing software which decides the spray of reinforcements on polymer layers. The spraying apparatus moves in coordination with the primary nozzle of the Fused Filament Fabrication process. Results: The hybridization of Fused Filament Fabrication [process with metal spray process has been successfully performed. The apparatus facilitates the fabrication of low cost composite materials along with flexibility of complete customization of composite manufacturing process. The anisotropic behaviour of products can be easily controlled and managed during fabrication which can be used for different applications.


Author(s):  
Mastura Mohammad Taha ◽  
Ridhwan Jumaidin ◽  
Nadlene M. Razali ◽  
Syahibudil Ikhwan Abdul Kudus

Fused filament fabrication (FFF) has been developed in additive manufacturing technology as a fast and simple manufacturing process in product design. Advantage of the process such as flexibility in terms of the materials employment has attracted many researchers to develop new materials for the feed stock filament in the heat extrusion process of FFF. Green materials or bio-composites materials have been found in FFF and successfully commercialized in the market. However, a deep research should have been performed prior the application because of the unique characteristics of the material itself. The challenge for the researchers to develop bio-composite materials as the filament in FFF technology is to determine the right composition of the composites with the right thermal, mechanical, and rheological properties. Therefore, in this study, a review has been conducted to highlight the important requirements of the process and materials. Green materials such as bio-composites have a great potential in the FFF technology and could improve the sustainability impact.


2020 ◽  
Vol 47 ◽  
pp. 243-252 ◽  
Author(s):  
Kalaimani Markandan ◽  
Ruijing Lim ◽  
Pawan Kumar Kanaujia ◽  
Ian Seetoh ◽  
Muhammad Raziq bin Mohd Rosdi ◽  
...  

JOM ◽  
2020 ◽  
Vol 72 (3) ◽  
pp. 1092-1104 ◽  
Author(s):  
S. Amir H. Motaman ◽  
Fabian Kies ◽  
Patrick Köhnen ◽  
Maike Létang ◽  
Mingxuan Lin ◽  
...  

2012 ◽  
Vol 155 (3) ◽  
pp. 962-985 ◽  
Author(s):  
Marina Prechtel ◽  
Günter Leugering ◽  
Paul Steinmann ◽  
Michael Stingl

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