scholarly journals 3D Printed Sand Tools for Thermoforming Applications of Carbon Fiber Reinforced Composites—A Perspective

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4639
Author(s):  
Daniel Günther ◽  
Patricia Erhard ◽  
Simon Schwab ◽  
Iman Taha
Keyword(s):  
Shell Structures ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Small Series ◽  
Innovative Idea ◽  
Carbon Fiber Reinforced Composites ◽  
3D Printed ◽  
Conventional Machining ◽  
Binder Jetting ◽  
Reduced Time

Tooling, especially for prototyping or small series, may prove to be very costly. Further, prototyping of fiber reinforced thermoplastic shell structures may rely on time-consuming manual efforts. This perspective paper discusses the idea of fabricating tools at reduced time and cost compared to conventional machining-based methods. The targeted tools are manufactured out of sand using the Binder Jetting process. These molds should fulfill the demands regarding flexural and compressive behavior while allowing for vacuum thermoforming of fiber reinforced thermoplastic sheets. The paper discusses the requirements and the challenges and presents a perspective study addressing this innovative idea. The authors present the idea for discussion in the additive manufacturing and FRP producing communities.

scholarly journals Effects of Heat-Treatment on Tensile Behavior and Dimension Stability of 3D Printed Carbon Fiber Reinforced Composites

Polymers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 4305
Author(s):  
Amal Nassar ◽  
Mona Younis ◽  
Mohamed Elzareef ◽  
Eman Nassar
Keyword(s):  
Heat Treatment ◽  
Carbon Fiber ◽  
Treatment Temperature ◽  
Tensile Behavior ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced Composites ◽  
3D Printed ◽  
Carbon Fiber Reinforced

This work investigated the effects of heat treatment on the tensile behavior of 3D-printed high modules carbon fiber-reinforced composites. The manufacturing of samples with different material combinations using polylactic acid (PLA) reinforced with 9% carbon fiber (PLACF), acrylonitrile butadiene styrene (ABS) reinforced with 9% carbon fiber (ABSCF) were made. This paper addresses the tensile behavior of different structured arrangements at different% of densities between two kinds of filaments. The comparison of the tensile behavior between heat treated and untreated samples. The results showed that heat treatment improves the tensile properties of samples by enhancing the bonding of filament layers and by reducing the porosity content. At all structure specifications, the rectilinear pattern gives higher strength of up to 33% compared with the Archimedean chords pattern. Moreover, there is a limited improvement in the tensile strength and modulus of elasticity values for the samples treated at low heat-treatment temperature. The suggested methodology to evaluate the tensile behavior of the pairs of materials selected is innovative and could be used to examine sandwich designs as an alternative to producing multi-material components using inexpensive materials.

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