Fracture characterization of ductile polymer cellular model structures manufactured by FDM

IF 4.7 2区工程技术 Q1 MECHANICS

Engineering Fracture Mechanics Pub Date : 2025-03-24 DOI:10.1016/j.engfracmech.2025.111011

Jacopo Agnelli , Claudia Pagano , Irene Fassi , Luca D’Andrea , Pasquale Vena , Laura Treccani , Fabio Bignotti , Francesco Baldi

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引用次数: 0

Abstract

This work addresses specific fundamental and methodological issues regarding the applicability of Fracture Mechanics (FM) testing schemes to polymer open-celled cellular solids with controlled architecture, exhibiting an elastic–plastic response and with pronounced structural heterogeneity at the cell-scale. Acrylonitrile-Butadiene-Styrene (ABS) model structures were manufactured by Fused Deposition Modeling (FDM), and their mode-I fracture response investigated. Structures with different porosity degrees (from

\approx 20 %

\approx 70 %

) were examined, and initiation fracture toughness (J-integral) data determined. Different modes of mechanical macro-confinement experienced by the circular cross-section beam-like structural element were noticed, able to drive a transition from true cellular to solid containing isolated pores.

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来源期刊

Engineering Fracture Mechanics 物理-力学

CiteScore

8.70

自引率

13.00%

发文量

606

审稿时长

74 days

期刊介绍： EFM covers a broad range of topics in fracture mechanics to be of interest and use to both researchers and practitioners. Contributions are welcome which address the fracture behavior of conventional engineering material systems as well as newly emerging material systems. Contributions on developments in the areas of mechanics and materials science strongly related to fracture mechanics are also welcome. Papers on fatigue are welcome if they treat the fatigue process using the methods of fracture mechanics.