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3D打印聚合物的抗断裂性分析

Fracture Resistance Analysis of 3D-Printed Polymers.

作者信息

Zolfagharian Ali, Khosravani Mohammad Reza, Kaynak Akif

机构信息

School of Engineering, Deakin University, Geelong, Victoria 3216, Australia.

Chair of Solid Mechanics, University of Siegen, Paul-Bonatz-Str. 9-11, 57068 Siegen, Germany.

出版信息

Polymers (Basel). 2020 Feb 2;12(2):302. doi: 10.3390/polym12020302.

DOI:10.3390/polym12020302
PMID:32024315
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7077438/
Abstract

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.

摘要

随着该领域研究的迅速增多，三维（3D）打印部件是增材制造的一个重要子类别。然而，通过不同技术制造的3D打印部件在微观结构和材料性能方面存在差异。由于裂纹扩展不稳定，常常会发生灾难性故障，因此对3D打印部件的断裂行为进行研究是工程设计的重要组成部分。本文介绍了断裂模式的实验测试和数值研究。对通过熔融沉积建模（FDM）和多射流熔融（MJF）制造的3D打印尼龙样品进行了一系列实验，以确定通过两种不同3D打印技术制造的U型缺口板的承载能力。等效材料概念（EMC）与J积分失效准则结合使用，以研究缺口样品的失效情况。数值模拟表明，当EMC与J积分准则结合时，可以成功预测3D打印聚合物样品的实验结果。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/a4bfbc1c7d14/polymers-12-00302-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/c23d37097f4e/polymers-12-00302-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/2adc747378ef/polymers-12-00302-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/36d6e557c091/polymers-12-00302-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/9c11a9e41284/polymers-12-00302-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/4e61c7643e5c/polymers-12-00302-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/cf8b62a518a9/polymers-12-00302-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/0b3199bc1888/polymers-12-00302-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/6c8894b2897a/polymers-12-00302-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/f9fa7b1bfe65/polymers-12-00302-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/a4bfbc1c7d14/polymers-12-00302-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/c23d37097f4e/polymers-12-00302-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/2adc747378ef/polymers-12-00302-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/36d6e557c091/polymers-12-00302-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/9c11a9e41284/polymers-12-00302-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/4e61c7643e5c/polymers-12-00302-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/cf8b62a518a9/polymers-12-00302-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/0b3199bc1888/polymers-12-00302-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/6c8894b2897a/polymers-12-00302-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/f9fa7b1bfe65/polymers-12-00302-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba5f/7077438/a4bfbc1c7d14/polymers-12-00302-g010.jpg

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