{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,1]],"date-time":"2025-10-01T15:26:16Z","timestamp":1759332376708,"version":"3.38.0"},"reference-count":45,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2020,12,8]],"date-time":"2020-12-08T00:00:00Z","timestamp":1607385600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications"],"published-print":{"date-parts":[[2021,6]]},"abstract":"<jats:p> Three-dimensional printers, particularly the extrusion-based ones, are driving a global academic, industrial, and social revolution. The accessibility of the technology has allowed a number of enthusiasts and scientists to dedicate efforts to improve the technical properties of the parts produced. However, there is little literature on the measurement of the coefficient of friction, especially the static one, between a pair of printed parts. In this sense, an investigation was carried out in two stages, in which at first the static coefficient of friction was measured, through a simple apparatus based on the concept of the inclined plane, varying the angle of the filaments laid up on the surfaces of the two parts in contact. The parameter was analyzed at three levels\u20140\u00b0, 45\u00b0, and 90\u00b0\u2014in components manufactured in poly(lactic acid) and poly(ethylene glycol terephthalate). In the second part of the research, a case study was carried out to test and validate the effects of the best and worst friction conditions on the behavior of the insertion force of snap-fit connections. The results obtained show a significant influence of the filament angle in the interaction between two printed parts. Combinations of contact with different angles decrease the static coefficient of friction, while faces with equal angles tend to increase the magnitude of the response, especially if the arrangement of the filaments allows a fit of the surfaces opposite to sliding. The static coefficient of friction of poly(lactic acid) varied from 0.12 to 0.38, while the static coefficient of friction of poly(ethylene glycol terephthalate) varied from 0.13 to 0.21. The responses of the inclined plane test allowed to predict the behavior of the insertion force and plan the design of quick fittings. <\/jats:p>","DOI":"10.1177\/1464420720978997","type":"journal-article","created":{"date-parts":[[2020,12,10]],"date-time":"2020-12-10T18:23:10Z","timestamp":1607624590000},"page":"1351-1367","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":2,"title":["Effect of the angle of the laid-up filaments on the surfaces on the coefficient of static friction between parts manufactured by extrusion-based 3D printing"],"prefix":"10.1177","volume":"235","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0361-940X","authenticated-orcid":false,"given":"Leonardo","family":"Santana","sequence":"first","affiliation":[{"name":"Faculty of Engineering of the University of Porto (FEUP)), Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9327-9092","authenticated-orcid":false,"given":"Jorge Lino","family":"Alves","sequence":"additional","affiliation":[{"name":"Faculty of Engineering of the University of Porto (FEUP)), Porto, Portugal"},{"name":"INEGI, Porto, Portugal"}]},{"given":"Aur\u00e9lio da Costa Sabino","family":"Netto","sequence":"additional","affiliation":[{"name":"Federal Institute of Santa Catarina (IFSC), Florian\u00f3polis, Brazil"}]}],"member":"179","published-online":{"date-parts":[[2020,12,8]]},"reference":[{"key":"bibr1-1464420720978997","doi-asserted-by":"publisher","DOI":"10.1016\/j.procir.2019.02.018"},{"key":"bibr2-1464420720978997","doi-asserted-by":"publisher","DOI":"10.3390\/ma12101664"},{"key":"bibr3-1464420720978997","unstructured":"Fiel MV. Prosumer e impresi\u00f3n 3D: la democratizaci\u00f3n del proceso creativo. 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