2026-09-20T07:39:39Zhttps://dspace.mit.edu/server/oai/request

oai:dspace.mit.edu:1721.1/1056932025-10-27T13:35:26Zcom_1721.1_7582com_1721.1_7581col_1721.1_131024

Anastasios John Hart. Malinowski, Maxwell X. (Maxwell Xavier) Massachusetts Institute of Technology. Department of Mechanical Engineering. Massachusetts Institute of Technology. Department of Mechanical Engineering 2016-12-05T19:58:19Z 2016-12-05T19:58:19Z 2016 2016 http://hdl.handle.net/1721.1/105693 964521947 Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016. Cataloged from PDF version of thesis. Includes bibliographical references (page 33). Extrusion-based additive manufacturing, commonly known as fused deposition modeling (FDM) or fused filament fabrication (FFF) is incredibly useful in industry for a variety of reasons, including rapid prototyping and the ability to create complex geometries easily. However, its further adoption is limited by relatively slow part manufacturing rates when compared to conventional manufacturing methods. Previous work has identified three modules within the FDM process which are rate limiting: speed of gantry positioning, polymer heating, and extrusion pressure. Advancements in any one module will allow for higher volumetric output, which will in turn allow for higher rates of production using FDM. This work focuses on polymer heating, and demonstrates a new concept for rapid heating of filament by introducing conductive nanoparticles into the polymer resin and resistively heating sections in flow. This technique can improve the volumetric output of FDM printers by at least 20%. First, the resistive properties of the composite filament are characterized. Second, the concept is experimentally validated by demonstrating a decrease in extrusion force required to maintain a given feed rate when using resistive heating. by Maxwell Malinowski. S.B. 33 pages eng Massachusetts Institute of Technology M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 Mechanical Engineering. High-throughput extrusion additive manufacturing using electrically resistive preheating Thesis application/pdf Publication unknown unknown <Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="e49d96ea-2548-4cb1-a661-ad410fdfe3e7"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>eng</Language> <Title>High-throughput extrusion additive manufacturing using electrically resistive preheating</Title> <PublishedIn> <Publication> </Publication> </PublishedIn> <PublicationDate>2016</PublicationDate> <Authors> <Author> <DisplayName>Malinowski, Maxwell X. (Maxwell Xavier)</DisplayName> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <DisplayName>Massachusetts Institute of Technology</DisplayName> <OrgUnit /> </Publisher> </Publishers> <License>http://dspace.mit.edu/handle/1721.1/7582</License> <Keyword>Mechanical Engineering.</Keyword> <Abstract>Extrusion-based additive manufacturing, commonly known as fused deposition modeling (FDM) or fused filament fabrication (FFF) is incredibly useful in industry for a variety of reasons, including rapid prototyping and the ability to create complex geometries easily. However, its further adoption is limited by relatively slow part manufacturing rates when compared to conventional manufacturing methods. Previous work has identified three modules within the FDM process which are rate limiting: speed of gantry positioning, polymer heating, and extrusion pressure. Advancements in any one module will allow for higher volumetric output, which will in turn allow for higher rates of production using FDM. This work focuses on polymer heating, and demonstrates a new concept for rapid heating of filament by introducing conductive nanoparticles into the polymer resin and resistively heating sections in flow. This technique can improve the volumetric output of FDM printers by at least 20%. First, the resistive properties of the composite filament are characterized. Second, the concept is experimentally validated by demonstrating a decrease in extrusion force required to maintain a given feed rate when using resistive heating.</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication>