Journal ArticleDOI
The impact of print orientation and raster pattern on fracture toughness in additively manufactured ABS
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TLDR
In this article, the fracture toughness of acrylonitrile butadiene styrene (ABS) was analyzed in three orthogonal orientations to analyze how fracture toughness varied with mesostructure.Abstract:
Fused deposition modeling (FDM) has been gaining industrial interest due to its potential to simplify and lower the cost of complex manufacturing. To better understand the mechanical response of these materials—due to potential integration of FDM parts into structural components—compact tension samples of acrylonitrile butadiene styrene (ABS) were printed in three orthogonal orientations to analyze how the fracture toughness varied with mesostructure. Furthermore, in each of these orientations the raster pattern was either an alternating +45/−45° or a 0/90° pattern. When the alignment of extruded filament layers changed from parallel to perpendicular with respect to the crack plane, a 54% increase in fracture toughness was observed. However, the raster pattern only had a significant effect in one of the print orientations; the fracture toughness decreased by 11% when a 0/90° pattern was used in place of a +45/−45° pattern in layers oriented perpendicularly to the crack plane. The orientation of individual tracks of deposited material with respect to the crack tip appeared to have the most pronounced role in altering the fracture toughness of FDM ABS. This research provides useful information and insight to future designers determining how processing affects the crack stability of these new materials used for space hardwareread more
Citations
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Journal ArticleDOI
Polylactide (PLA) Filaments a Biobased Solution for Additive Manufacturing: Correlating Rheology and Thermomechanical Properties with Printing Quality
Gianluca Cicala,Davide Giordano,Claudio Tosto,Giovanni Filippone,Antonino Recca,Ignazio Blanco +5 more
TL;DR: Three commercial filaments for Fused Deposition Modeling (FDM) were selected to study the influence of polymer formulation on the printing quality and mechanical properties of FDM specimens, and the filled PLA was the best-performing filament both in terms of printingquality and thermomechanical performance.
Journal ArticleDOI
Cork–PLA composite filaments for fused deposition modelling
TL;DR: In this article, the authors report the design and development of cork-poly(lactic acid) (PLA) biodegradable filaments for fused deposition modeling (FDM), which is an additive manufacturing technique.
Journal ArticleDOI
Fracture toughness of additively manufactured carbon fiber reinforced composites
Easir Arafat Papon,Anwarul Haque +1 more
TL;DR: In this paper, the fracture properties of additively manufactured (AM) polylactic acid (PLA) and its short carbon fiber (CF) reinforced composites have been studied and the effects of CF reinforcement, nozzle geometry and bead lay-up orientations in fracture properties, void contents, and interfacial bonding were investigated.
Journal ArticleDOI
3D printing to enable multifunctionality in polymer-based composites: A review
TL;DR: A review of the main functionalities that have been incorporated, homogeneously or locally, to polymer based composite materials via 3D printing is presented in this article, where a strong emphasis is laid on the two main pillars enabling functionalisation: additives and printing methods.
Journal ArticleDOI
Fused Filament Fabrication of PEEK: A Review of Process-Structure-Property Relationships
TL;DR: The aim of the current review is to provide comprehensive information in relation to the process-structure-property relationships in FFF 3D-printing of PEEK to provide a clear baseline to the research community and assesses its potential for space applications, including out-of-earth manufacturing.
References
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Book
Deformation and Fracture Mechanics of Engineering Materials
TL;DR: In this article, the authors present an overview of fracture mechanics of engineering materials and examine the role of the transition temperature approach to fracture control in the engineering failure process, as well as various aspects of fracture toughness.
MonographDOI
Mechanical Behavior of Materials
TL;DR: A balanced mechanics-materials approach and coverage of the latest developments in biomaterials and electronic materials, the new edition of this popular text is the most thorough and modern book available for upper-level undergraduate courses on the mechanical behavior of materials as discussed by the authors.
Journal ArticleDOI
Anisotropic material properties of fused deposition modeling ABS
TL;DR: In this article, the properties of FDM parts fabricated by the FDM 1650 were analyzed using a Design of Experiment (DOE) approach, such as raster orientation, air gap, bead width, color and model temperature.
Book
Mechanical Behavior of Materials
TL;DR: In this paper, an overview of mechanical behavior is presented, including Elastic Behavior, Dislocations, Plastic Deformation in Single and Polycrystalline Materials, Strengthening of Crystalline materials, Composite Materials, Fracture Mechanics, Toughening Mechanisms and the Physics of Fracture.
Journal ArticleDOI
On the fracture toughness of advanced materials
TL;DR: In this article, the authors show that the ability of a microstructure to develop toughening mechanisms acting either ahead or behind the crack tip can result in resistance-curve behavior where the fracture resistance actually increases with crack extension; the implication here is that toughness is often developed primarily during crack growth and not for crack initiation.