Characterization of Pultruded Glass-Fiber Reinforced Polymers with Two-Step Homogenization

Characterization of Pultruded Glass-Fiber Reinforced Polymers with Two-Step Homogenization

The aim of this work is to determine effective elastic properties of pultruded Glass Fiber Reinforced Polymer using micro-CT in conjunction with a two-step numerical homogenization technique. The two-step homogenization involves the segmentation of the material's layers, which was made here by...

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Bibliographic Details
Published in:Materials research (São Carlos, São Paulo, Brazil) Vol. 26; p. 1
Main Authors: Vianna, Rafael da S., Pereira, André M.B., Leiderman, Ricardo, Vieira, Janine D.
Format: Journal Article
Language:English
Published: Sao Carlos Universidade Federal do Sao Carlos, Departamento de Engenharia de Materiais 01-01-2023
ABM, ABC, ABPol
Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
Subjects:
Elastic properties
ENGINEERING, CHEMICAL
Fiber reinforced polymers
Finite Element Method
Fractions
Glass fiber reinforced plastics
Glass Fiber Reinforced Polymer
Homogenization
Image resolution
Image Segmentation
Laboratories
Laboratory tests
Machine learning
MATERIALS SCIENCE, MULTIDISCIPLINARY
METALLURGY & METALLURGICAL ENGINEERING
Micro-CT
Modulus of elasticity
Non-destructive testing
Numerical analysis
Numerical Homogenization
Numerical Homogenization
Micro-CT
Glass Fiber Reinforced Polymer
Non-destructive testing
Finite Element Method
Image Segmentation
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Description
Summary:The aim of this work is to determine effective elastic properties of pultruded Glass Fiber Reinforced Polymer using micro-CT in conjunction with a two-step numerical homogenization technique. The two-step homogenization involves the segmentation of the material's layers, which was made here by means of a machine learning approach. The segmentation was validated through the comparison between the phase's volume fractions of samples obtained from the segmented images and laboratory tests. Further, a standard accuracy analysis in a 10-fold cross validation was performed. The samples' effective axial Young's modulus obtained by our numerical homogenization were compared to results obtained from experimental tests. For both the experimental tests and the image-based numerical analysis we considered samples extracted from the same profile. The two-step methodology allowed the homogenization of large volumes of the composite corresponding to the whole thickness of the profile, imaged with a high resolution. In addition to the axial effective Young's modulus, our methodology was also able to successfully provide all the other elastic properties along the three orthogonal directions, even the ones that are arduous to be obtained in laboratory setups.
ISSN:1516-1439
1980-5373
1980-5373
DOI:10.1590/1980-5373-mr-2022-0252