{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,28]],"date-time":"2025-11-28T17:27:17Z","timestamp":1764350837209,"version":"3.41.2"},"reference-count":41,"publisher":"Emerald","issue":"8","license":[{"start":{"date-parts":[[2023,5,12]],"date-time":"2023-05-12T00:00:00Z","timestamp":1683849600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.emerald.com\/insight\/site-policies"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["RPJ"],"published-print":{"date-parts":[[2023,8,10]]},"abstract":"<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Purpose<\/jats:title>\n<jats:p>This paper aims to address the development and implementation of \u201cAltPrint,\u201d a slicing algorithm based on a new filling process planning from a variation in the deposited material geometry. AltPrint enables changes in the extruded material flow toward local variations in stiffness. The technical feasibility evaluation was conducted experimentally by fused filament fabrication (FFF) process of snap-fit subjected to a mechanical cyclical test.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Design\/methodology\/approach<\/jats:title>\n<jats:p>The methodology is based on the estimation of the parameter <jats:italic>E<\/jats:italic> from the mathematical relationships among the variation of the material in the material flow, nozzle geometry and extrusion parameters. Calibration, validation and analysis of the printed specimens were divided into two moments, of which the first refers to the material responses (flexural and dynamic mechanical analysis) and the second involves the analysis of the printed components with localized flow properties (for estimating the response to cyclic loading). Finite element analysis assisted in the comparison of two snap-fit geometries, one traditional and one generated by AltPrint. Finally, three examples of compliant mechanisms were developed to demonstrate the potential of the algorithm in the generation of functional prototypes.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Findings<\/jats:title>\n<jats:p>The contribution of AltPrint is the variable fill width integrated with the slicing software that varies the print parameters in different regions of the object. The alternative extrusion method based on material rate variation was conceived as an \u201copen software\u201d available in GitHub platform, hence, open manufacturing with initial focus on desktop 3D printer based on FFF. The slicing method provides deposited variable-width segments in an organized and replicable filling strategy, resulting in mechanical properties variations in specific regions of a part. It was implemented and evaluated experimentally and indicated potential applications in parts manufactured by the additive process based on extrusion, which requires local flexibilities.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Originality\/value<\/jats:title>\n<jats:p>This paper presents a new alternative method for application in an open additive manufacturing context, specifically for additive extrusion techniques that enable local variations in the material flow. Its potential for manufacturing functional parts, which require flexibility due to cyclic loading, was demonstrated by fabrication and experimental evaluations of parts made in acrylonitrile butadiene styrene filament. The changes proposed by AltPrint enable geometric modifications in the response of the printed parts. The proposed slicing and filling control of parameters is inserted in a context of design for additive manufacturing and shows great potential in the area of product design.<\/jats:p>\n<\/jats:sec>","DOI":"10.1108\/rpj-06-2022-0208","type":"journal-article","created":{"date-parts":[[2023,5,11]],"date-time":"2023-05-11T08:48:50Z","timestamp":1683794930000},"page":"1702-1714","source":"Crossref","is-referenced-by-count":2,"title":["AltPrint: new filling and slicing process planning based on deposited material with geometry variation"],"prefix":"10.1108","volume":"29","author":[{"given":"Henrique Takashi","family":"Idogava","sequence":"first","affiliation":[]},{"given":"Daniel Marcos Souza do","family":"Couto","sequence":"additional","affiliation":[]},{"given":"Leonardo","family":"Santana","sequence":"additional","affiliation":[]},{"given":"Jorge Lino","family":"Alves","sequence":"additional","affiliation":[]},{"given":"Zilda Castro","family":"Silveira","sequence":"additional","affiliation":[]}],"member":"140","published-online":{"date-parts":[[2023,5,12]]},"reference":[{"key":"key2023080911394433000_ref001","doi-asserted-by":"publisher","first-page":"29","DOI":"10.1016\/j.addma.2017.11.002","article-title":"Process-structure-property effects on ABS bond strength in fused filament fabrication","volume":"19","year":"2018","journal-title":"Additive Manufacturing"},{"issue":"7","key":"key2023080911394433000_ref002","doi-asserted-by":"publisher","DOI":"10.1108\/RPJ-12-2019-0321","article-title":"Mechanical, thermal, melt-flow and morphological characterizations of bentonite-filled ABS copolymer","volume":"26","year":"2020","journal-title":"Rapid Prototyping Journal"},{"key":"key2023080911394433000_ref003","doi-asserted-by":"publisher","first-page":"106107","DOI":"10.1016\/j.ast.2020.106107","article-title":"Out-of-plane and in-plane compression of additively manufactured auxetic structures","volume":"106","year":"2020","journal-title":"Aerospace Science and Technology"},{"key":"key2023080911394433000_ref004","doi-asserted-by":"publisher","first-page":"101562","DOI":"10.1016\/j.addma.2020.101562","article-title":"Additive manufacturing of metamaterials: a review","volume":"36","year":"2020","journal-title":"Additive Manufacturing"},{"key":"key2023080911394433000_ref005","unstructured":"ASTM52915 (2020), \u201cSpecification for additive manufacturing file format (AMF) Version 1.2\u201d, Technical Report ASTM International, West Conshohocken, PA."},{"key":"key2023080911394433000_ref006","unstructured":"ASTMD790 (2017), \u201cStandard test methods for flexural properties of unreinforced and reinforced plastics and electrical insulating materials\u201d, Technical Report ASTM International, West Conshohocken, PA."},{"key":"key2023080911394433000_ref007","doi-asserted-by":"publisher","first-page":"112","DOI":"10.1016\/j.addma.2018.10.012","article-title":"Influence of printing parameters on the stability of deposited beads in fused filament fabrication of poly(lactic) acid","volume":"25","year":"2019","journal-title":"Additive Manufacturing"},{"key":"key2023080911394433000_ref008","doi-asserted-by":"publisher","DOI":"10.1016\/j.addma.2020.101299","article-title":"Thermomechanical characterization of short carbon fiber and short glass fiber-reinforced ABS used in large format additive manufacturing","volume":"35","year":"2020","journal-title":"Additive Manufacturing"},{"key":"key2023080911394433000_ref009","first-page":"1","article-title":"The first snap-fit handbook","volume-title":"The First Snap-Fit Handbook","year":"2016","edition":"3rd ed.,"},{"key":"key2023080911394433000_ref010","doi-asserted-by":"publisher","DOI":"10.1016\/j.addma.2019.100924","article-title":"Processing parameter correlations in material extrusion additive manufacturing","volume":"31","year":"2020","journal-title":"Additive Manufacturing"},{"key":"key2023080911394433000_ref011","doi-asserted-by":"publisher","first-page":"101960","DOI":"10.1016\/j.rcim.2020.101960","article-title":"Layer-by-layer generation of optimized joint trajectory for multi-axis robotized additive manufacturing of parts of revolution","volume":"65","year":"2020","journal-title":"Robotics and Computer-Integrated Manufacturing"},{"key":"key2023080911394433000_ref012","doi-asserted-by":"publisher","first-page":"516","DOI":"10.4028\/www.scientific.net\/KEM.443.516","article-title":"Major factors in rapid prototyping of mechanisms","volume-title":"Advances in Materials Processing IX","year":"2010"},{"issue":"3","key":"key2023080911394433000_ref013","doi-asserted-by":"publisher","first-page":"602","DOI":"10.1108\/RPJ-08-2020-0194","article-title":"Volumetric adaptive slicing of manifold mesh for rapid prototyping based on relative volume error","volume":"28","year":"2022","journal-title":"Rapid Prototyping Journal"},{"key":"key2023080911394433000_ref014","unstructured":"do Couto, D.M.S. and Idogava, H.T. 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