Effect of Layer Thickness on the Physical and Mechanical Properties of Sand Powder 3D Printing Specimens

The application of sand powder three-dimensional (3D) printing technology in the field of rock mechanics and mining engineering has tremendous potential, but it is still in the preliminary exploration stage. This study investigated the effect of printing layer thickness on the physical and mechanica...

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Autores principales:	Qing Xu, Lishuai Jiang, Changqing Ma, Qingjia Niu, Xinzhe Wang
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	sand powder 3D printing rock-like material uniaxial compression test physical and mechanical properties digital image correlation acoustic emission Science Q
Acceso en línea:	https://doaj.org/article/832ad08da23643a0b4860257f87f9e26
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id	oai:doaj.org-article:832ad08da23643a0b4860257f87f9e26
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spelling	oai:doaj.org-article:832ad08da23643a0b4860257f87f9e262021-11-19T07:45:51ZEffect of Layer Thickness on the Physical and Mechanical Properties of Sand Powder 3D Printing Specimens2296-646310.3389/feart.2021.763202https://doaj.org/article/832ad08da23643a0b4860257f87f9e262021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/feart.2021.763202/fullhttps://doaj.org/toc/2296-6463The application of sand powder three-dimensional (3D) printing technology in the field of rock mechanics and mining engineering has tremendous potential, but it is still in the preliminary exploration stage. This study investigated the effect of printing layer thickness on the physical and mechanical properties of rock-like specimens with sand powder 3D printing. Quartz sand powder was used as the printing material, and the specimens were prepared with three different layer thicknesses of 0.2, 0.3, and 0.4 mm. Uniaxial compression tests with a combination of digital image correlation (DIC), acoustic emission (AE) and 3D microscope observations were performed to analyze the mechanical properties and failure patterns of the specimens during loading. Experimental findings showed that increasing the layer thickness from 0.2 to 0.4 mm would result in a decrease in the weight, density, uniaxial compression strength, and elastic modulus of the specimens. The stress-strain curve, deformation and failure patterns, crack growth process, and AE characteristics of the specimens with a layer thickness of 0.2 mm are similar to the AE characteristics of rock-like material, whereas the specimens with layer thicknesses of 0.3 and 0.4 mm deform like a ductile material, which is not appropriate for simulation of coal or rock mass. In future studies, rock-like specimens should be prepared with a small layer thickness.Qing XuLishuai JiangChangqing MaQingjia NiuXinzhe WangFrontiers Media S.A.articlesand powder 3D printingrock-like materialuniaxial compression testphysical and mechanical propertiesdigital image correlationacoustic emissionScienceQENFrontiers in Earth Science, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sand powder 3D printing rock-like material uniaxial compression test physical and mechanical properties digital image correlation acoustic emission Science Q
spellingShingle	sand powder 3D printing rock-like material uniaxial compression test physical and mechanical properties digital image correlation acoustic emission Science Q Qing Xu Lishuai Jiang Changqing Ma Qingjia Niu Xinzhe Wang Effect of Layer Thickness on the Physical and Mechanical Properties of Sand Powder 3D Printing Specimens
description	The application of sand powder three-dimensional (3D) printing technology in the field of rock mechanics and mining engineering has tremendous potential, but it is still in the preliminary exploration stage. This study investigated the effect of printing layer thickness on the physical and mechanical properties of rock-like specimens with sand powder 3D printing. Quartz sand powder was used as the printing material, and the specimens were prepared with three different layer thicknesses of 0.2, 0.3, and 0.4 mm. Uniaxial compression tests with a combination of digital image correlation (DIC), acoustic emission (AE) and 3D microscope observations were performed to analyze the mechanical properties and failure patterns of the specimens during loading. Experimental findings showed that increasing the layer thickness from 0.2 to 0.4 mm would result in a decrease in the weight, density, uniaxial compression strength, and elastic modulus of the specimens. The stress-strain curve, deformation and failure patterns, crack growth process, and AE characteristics of the specimens with a layer thickness of 0.2 mm are similar to the AE characteristics of rock-like material, whereas the specimens with layer thicknesses of 0.3 and 0.4 mm deform like a ductile material, which is not appropriate for simulation of coal or rock mass. In future studies, rock-like specimens should be prepared with a small layer thickness.
format	article
author	Qing Xu Lishuai Jiang Changqing Ma Qingjia Niu Xinzhe Wang
author_facet	Qing Xu Lishuai Jiang Changqing Ma Qingjia Niu Xinzhe Wang
author_sort	Qing Xu
title	Effect of Layer Thickness on the Physical and Mechanical Properties of Sand Powder 3D Printing Specimens
title_short	Effect of Layer Thickness on the Physical and Mechanical Properties of Sand Powder 3D Printing Specimens
title_full	Effect of Layer Thickness on the Physical and Mechanical Properties of Sand Powder 3D Printing Specimens
title_fullStr	Effect of Layer Thickness on the Physical and Mechanical Properties of Sand Powder 3D Printing Specimens
title_full_unstemmed	Effect of Layer Thickness on the Physical and Mechanical Properties of Sand Powder 3D Printing Specimens
title_sort	effect of layer thickness on the physical and mechanical properties of sand powder 3d printing specimens
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/832ad08da23643a0b4860257f87f9e26
work_keys_str_mv	AT qingxu effectoflayerthicknessonthephysicalandmechanicalpropertiesofsandpowder3dprintingspecimens AT lishuaijiang effectoflayerthicknessonthephysicalandmechanicalpropertiesofsandpowder3dprintingspecimens AT changqingma effectoflayerthicknessonthephysicalandmechanicalpropertiesofsandpowder3dprintingspecimens AT qingjianiu effectoflayerthicknessonthephysicalandmechanicalpropertiesofsandpowder3dprintingspecimens AT xinzhewang effectoflayerthicknessonthephysicalandmechanicalpropertiesofsandpowder3dprintingspecimens
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Effect of Layer Thickness on the Physical and Mechanical Properties of Sand Powder 3D Printing Specimens

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