Identification of Representative Equivalent Volumes on the Microstructure of 3D-Printed Fiber-Reinforced Thermoplastics Based on Statistical Characterization
Artikel i vetenskaplig tidskrift, 2022

The present work describes a methodology to compute equivalent volumes representing the microstructure of 3D-printed continuous fiber-reinforced thermoplastics, based on a statistical characterization of the fiber distribution. In contrast to recent work, the methodology herein presented determines the statistically equivalent fiber distribution directly from cross-section micrographs, instead of generating random fiber arrangements. For this purpose, several regions, with different sizes and from different locations, are cropped from main cross-section micrographs and different spatial descriptor functions are adopted to characterize the microstructures in terms of agglomeration and periodicity of the fibers. Detailed information about the adopted spatial descriptors and the algorithm implemented to identify the fiber distribution, as well as to define the location of cropped regions, are given. From the obtained statistical characterization results, the minimum size of the equivalent volume required to be representative of the fiber distribution, which is found in the cross-section micrographs of 3D-printed composite materials, is presented. To support the findings, as well as to demonstrate the effectiveness of the proposed methodology, the homogenized properties are also computed using representative equivalent volumes obtained in the statistical characterization and the results are compared to those experimentally measured, which are available in the literature.

mechanical properties

representative volume element (RVE)

computational mechanics

polymer–matrix composites (PMCs)

3D printing


Thiago Dutra

Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial (INEGI)

Rafael Thiago Luiz Ferreira


Hugo Borelli Resende


Luís Miguel Oliveira

Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial (INEGI)

Brina Blinzler

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Leif Asp

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik


2073-4360 (eISSN)

Vol. 14 5 972


Hållbar utveckling


Annan fysik

Sannolikhetsteori och statistik

Kompositmaterial och -teknik





Mer information

Senast uppdaterat