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dc.rights.licenseAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.contributor.authorrodriguez, Iñigo
dc.contributor.authorARRAZOLA, PEDRO JOSE
dc.contributor.authorCUESTA ZABALAJAUREGUI, MIKEL
dc.contributor.otherSterle, Luka
dc.contributor.otherPusavec, Franci
dc.date.accessioned2023-01-16T11:32:54Z
dc.date.available2023-01-16T11:32:54Z
dc.date.issued2022
dc.identifier.issn2588-9230en
dc.identifier.otherhttps://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=171248en
dc.identifier.urihttps://hdl.handle.net/20.500.11984/5958
dc.description.abstractIn the quest for decreasing fuel consumption and resulting gas emissions in the aeronautic sector, lightweight materials such as Carbon Fiber Reinforced Polymers (CFRPs) and Ti-6Al-4V alloys are being used. These materials, with excellent weight-to-strength ratios, are widely used for structural applications in aircraft manufacturing. To date, several studies have been published showing that the use of metalworking fluids (MWFs), special tool geometries, or advanced machining techniques is required to ensure a surface quality that meets aerospace component standards. Conventional MWFs pose a number of environmental and worker health hazards and also degrade the mechanical properties of CFRPs due to water absorption in the composite. Therefore, a transition to more environmentally friendly cooling/lubrication techniques that prevent moisture problems in the composite is needed. This research shows that lubricated LCO2 is a viable option to improve the quality of drilled CFRP and titanium aerospace components compared to dry machining, while maintaining clean work areas. The results show that the best combination of tool geometry and cooling conditions for machining both materials is drilling with Brad point drills and lubricated LCO2. Drilling under these conditions resulted in a 90 % improvement in fiber pull-out volume compared to dry machined CFRP holes. In addition, a 33 % reduction in burr height and a 15 % improvement in surface roughness were observed compared to dry drilling of titanium.en
dc.language.isoengen
dc.publisherElsevieren
dc.rights© 2022 Chinese Society of Aeronautics and Astronauticsen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectCarbon fibersen
dc.subjectCryogenicsen
dc.subjectGreen manufacturingen
dc.subjectMachiningen
dc.subjectSolid lubricantsen
dc.subjectSurface morphologyen
dc.subjectTitanium alloysen
dc.titleImproving surface integrity when drilling CFRPs and Ti-6Al-4V using sustainable lubricated liquid carbon dioxideen
dc.typeinfo:eu-repo/semantics/articleen
dcterms.accessRightsinfo:eu-repo/semantics/openAccessen
dcterms.sourceChinese Journal of Aeronauticsen
dc.description.versioninfo:eu-repo/semantics/publishedVersionen
local.contributor.groupMecanizado de alto rendimientoes
local.description.peerreviewedtrueen
local.identifier.doihttps://doi.org/10.1016/j.cja.2022.09.004en
local.contributor.otherinstitutionhttps://ror.org/05njb9z20es
local.source.detailsSeptember, 2022en
oaire.format.mimetypeapplication/pdf
oaire.file$DSPACE\assetstore


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