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Fracture resistance analysis of 3D-printed polymers

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Version 3 2024-06-18, 19:27
Version 2 2024-06-04, 11:38
Version 1 2020-02-24, 15:50
journal contribution
posted on 2024-06-18, 19:27 authored by Ali ZolfagharianAli Zolfagharian, MR Khosravani, Akif KaynakAkif Kaynak
Three-dimensional (3D)-printed parts are an essential subcategory of additive manufacturing with the recent proliferation of research in this area. However, 3D-printed parts fabricated by different techniques differ in terms of microstructure and material properties. Catastrophic failures often occur due to unstable crack propagations and therefore a study of fracture behavior of 3D-printed components is a vital component of engineering design. In this paper, experimental tests and numerical studies of fracture modes are presented. A series of experiments were performed on 3D-printed nylon samples made by fused deposition modeling (FDM) and multi-jet fusion (MJF) to determine the load-carrying capacity of U-notched plates fabricated by two different 3D printing techniques. The equivalent material concept (EMC) was used in conjunction with the J-integral failure criterion to investigate the failure of the notched samples. Numerical simulations indicated that when EMC was combined with the J-integral criterion the experimental results could be predicted successfully for the 3D-printed polymer samples.

History

Journal

Polymers

Volume

12

Article number

ARTN 302

Pagination

1 - 18

Location

Switzerland

Open access

  • Yes

ISSN

2073-4360

eISSN

2073-4360

Language

English

Publication classification

C Journal article, C1 Refereed article in a scholarly journal

Issue

2

Publisher

MDPI