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- Title
A Review on Microstructural Formations of Discontinuous Fiber-Reinforced Polymer Composites Prepared via Material Extrusion Additive Manufacturing: Fiber Orientation, Fiber Attrition, and Micro-Voids Distribution.
- Authors
Wang, Zhaogui; Fang, Zhenyu; Xie, Zhongqi; Smith, Douglas E.
- Abstract
A discontinuous fiber-reinforced polymer composite (DFRPC) provides superior mechanical performances in material extrusion additive manufacturing (MEAM) parts, and thus promotes their implementations in engineering applications. However, the process-induced structural defects of DFRPCs increase the probability of pre-mature failures as the manufactured parts experience complicated external loads. In light of this, the meso-structures of the MEAM parts have been discussed previously, while systematic analyses reviewing the studies of the micro-structural formations of the composites are limited. This paper summarizes the current state-of-the-art in exploring the correlations between the MEAM processes and the associated micro-structures of the produced composites. Experimental studies and numerical analyses including fiber orientation, fiber attrition, and micro-voids are collected and discussed. Based on the review and parametric study results, it is considered that the theories and numerical characterizations on fiber length attrition and micro-porosities within the MEAM-produced composites are in high demand, which is a potential topic for further explorations.
- Subjects
FIBER orientation; FIBER-reinforced plastics; FIBROUS composites; MECHANICAL abrasion; FIBERS; MICROPOROSITY; NUMERICAL analysis; SYNTHETIC fibers; POLYMERIC composites
- Publication
Polymers (20734360), 2022, Vol 14, Issue 22, p4941
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym14224941