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Conference Paper: Direct droplet writing - A novel droplet-punching capillary-splitting 3D printing method for highly viscous materials

TitleDirect droplet writing - A novel droplet-punching capillary-splitting 3D printing method for highly viscous materials
Authors
KeywordsAdditive manufacturing
Drop-on-demand
Droplet writing
Multi-material
Viscous material
Issue Date2021
Citation
Procedia Manufacturing, 2021, v. 53, p. 472-483 How to Cite?
AbstractThe drop-on-demand (DOD) based three-dimensional (3D) printing methods can fabricate an object with a high level of accuracy and shape complexity using multiple materials. However, a key limitation of the DOD approaches such as ink jetting is only the inks with low viscosity can be used. Such low-viscosity restriction severely limits the material options for the DOD-based 3D printing methods. To address the viscosity issue, we have developed a novel drop-on-demand 3D printing method called direct droplet writing (DDW) for highly viscous material. One main idea of the DDW process is to use direct droplet-punching to enable the printing of materials that may have a viscosity over 190,000 mPa·s; and another main idea of the DDW process is to use capillary-splitting to avoid common issues of various ink-jetting approaches, including splashing, droplet deflection, and satellite droplets. The DDW process can reliably fabricate 3D structures using a wide range of materials that are challenging for the jetting-based and extrusion-based methods. Analytical models to characterize the DDW process are presented. A set of test cases have been conducted using the in-house developed prototype system to characterize the relationship between droplet size and process parameters such as droplet punching speed and dispensing gap. Various materials, including high-loading photocurable tricalcium phosphate (TCP) ink and polyurethane (PU) leather ink, were successfully used in the DDW process. In addition to a much broader range of 3D printable materials, the DDW process is robust, without ink clogging or leaking, and can achieve consistent printing results using digitally controlled droplets.
Persistent Identifierhttp://hdl.handle.net/10722/341506
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorXu, Yang-
dc.contributor.authorQi, Fangjie-
dc.contributor.authorGao, Xiangyun-
dc.contributor.authorShan, Yujie-
dc.contributor.authorZhou, Yun-
dc.contributor.authorChen, Yong-
dc.date.accessioned2024-03-13T08:43:19Z-
dc.date.available2024-03-13T08:43:19Z-
dc.date.issued2021-
dc.identifier.citationProcedia Manufacturing, 2021, v. 53, p. 472-483-
dc.identifier.urihttp://hdl.handle.net/10722/341506-
dc.description.abstractThe drop-on-demand (DOD) based three-dimensional (3D) printing methods can fabricate an object with a high level of accuracy and shape complexity using multiple materials. However, a key limitation of the DOD approaches such as ink jetting is only the inks with low viscosity can be used. Such low-viscosity restriction severely limits the material options for the DOD-based 3D printing methods. To address the viscosity issue, we have developed a novel drop-on-demand 3D printing method called direct droplet writing (DDW) for highly viscous material. One main idea of the DDW process is to use direct droplet-punching to enable the printing of materials that may have a viscosity over 190,000 mPa·s; and another main idea of the DDW process is to use capillary-splitting to avoid common issues of various ink-jetting approaches, including splashing, droplet deflection, and satellite droplets. The DDW process can reliably fabricate 3D structures using a wide range of materials that are challenging for the jetting-based and extrusion-based methods. Analytical models to characterize the DDW process are presented. A set of test cases have been conducted using the in-house developed prototype system to characterize the relationship between droplet size and process parameters such as droplet punching speed and dispensing gap. Various materials, including high-loading photocurable tricalcium phosphate (TCP) ink and polyurethane (PU) leather ink, were successfully used in the DDW process. In addition to a much broader range of 3D printable materials, the DDW process is robust, without ink clogging or leaking, and can achieve consistent printing results using digitally controlled droplets.-
dc.languageeng-
dc.relation.ispartofProcedia Manufacturing-
dc.subjectAdditive manufacturing-
dc.subjectDrop-on-demand-
dc.subjectDroplet writing-
dc.subjectMulti-material-
dc.subjectViscous material-
dc.titleDirect droplet writing - A novel droplet-punching capillary-splitting 3D printing method for highly viscous materials-
dc.typeConference_Paper-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.promfg.2021.06.050-
dc.identifier.scopuseid_2-s2.0-85117941101-
dc.identifier.volume53-
dc.identifier.spage472-
dc.identifier.epage483-
dc.identifier.eissn2351-9789-
dc.identifier.isiWOS:000863624800055-

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