Microstructural defects induced by stereolithography and related compressive behaviour of polymers

被引：33

作者：

Liu, Tao ^{[1
]}

Guessasma, Sofiane ^{[2
]}

Zhu, Jihong ^{[1
]}

Zhang, Weihong ^{[1
]}

Nouri, Hedi ^{[3
,4
]}

Belhabib, Sofiane ^{[5
]}

机构：

[1] Northwestern Polytech Univ, State IJR Ctr Aerosp Design & Addit Mfg, Xian 710072, Shaanxi, Peoples R China

[2] INRA, Biopolymeres Interact Assemblages UR1268, F-44300 Nantes, France

[3] LGCgE GCE, IMT Lille Douai, F-59508 Douai, France

[4] Ecole Natl Ingenieurs Sfax, Lab Syst Electromecan, Route Soukra Km 3,BPW 3038, Sfax, Tunisia

[5] LUNAM Univ Nantes Angers Le Mans, CNRS, GEPEA, IUT Nantes,UMR 6144, 2 Ave Prof Jean Rouxel, F-44475 Carquefou, France

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2018年 / 251卷

基金：

中国国家自然科学基金;

关键词：

Stereolithography; X-ray micro-tomography; Compression testing; Microstructure; MECHANICAL-PROPERTIES; OPTIMIZATION; TOMOGRAPHY;

D O I：

10.1016/j.jmatprotec.2017.08.014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The goal of this work is to discover the defects induced by 3D printing of porous, polymeric blocks using stereolithography and any related compressive behaviour. Processing of polymeric blocks containing varied porosity contents in the range 0-60% is performed. X-ray micro-tomography is used to assess the microstructural details of the polymeric blocks. Compression testing is realized up to densification on all orthogonal faces. Mechanical characterization of the blocks shows the typical behaviour of a cellular material and limited anisotropy effect related to building direction. Defects such as trapped resin, altered support structure and unbuilt porosities are quantified. This study concludes that the design of airy structures needs to exclude any form of closed porosity to enable processing using stereolithography.

引用

页码：37 / 46

页数：10

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