000136442 001__ 136442
000136442 005__ 20240826132401.0
000136442 0247_ $$2doi$$a10.1016/j.cirpj.2024.08.003
000136442 0248_ $$2sideral$$a139373
000136442 037__ $$aART-2024-139373
000136442 041__ $$aeng
000136442 100__ $$0(orcid)0000-0001-9317-9991$$aGallardo, Daniel$$uUniversidad de Zaragoza
000136442 245__ $$aOn the effect of material density in dimensional evaluations by X-ray computed tomography of metal-polymer multi-material parts
000136442 260__ $$c2024
000136442 5060_ $$aAccess copy available to the general public$$fUnrestricted
000136442 5203_ $$aAn important aspect to consider in the evaluation of parts and assemblies by X-ray computed tomography (XCT) is the attenuation coefficient of the different materials involved, which are directly related to their density; depending on this coefficient, the X-ray penetration varies and, therefore, varies the contrast between different materials and with the background. This becomes more critical in those assemblies in which materials are characterized by a high difference in density, where the lighter material could be difficult to be characterised. In this paper, the effect of the presence of metals in the dimensional evaluation of polymeric geometries (having lower density than the metal parts) is studied, to evaluate the errors caused in dimensional measurements of different geometries and surface texture characterization. Based on a common geometry, four scenarios have been experimentally tested with variations of metal amount, in which macro geometries (precision spheres made by different polymers) and micro geometries (inclined ramps manufactured by fused deposition modelling (FDM)) have been characterised. Results show errors in the surface determination of the polymeric features directly related to the presence of metal: a high amount of steel makes significantly difficult to accurately determine the interface between background and material due to the noise and artifacts created, while aluminium has less influence on the irregularities of the features extracted. This effect is more evident for polymers with lower density due to the higher difference. Numerically, most affected parameters are those sensible to variations in surface determination, such as spheres’ form error and ramps’ maximum surface texture (Sz), while more solid features as spheres’ diameters, distances and ramps’ average surface texture (Sa and Sq) remain more stable. In conclusion and to sum up, it has been found that the quantity of metal present in assemblies made of polymeric and metallic materials is correlated with distortions in the dimensional evaluation of polymeric features by XCT.
000136442 536__ $$9info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2021-127134O-B-I00$$9info:eu-repo/grantAgreement/ES/MICINN/PRE2019-089465$$9info:eu-repo/grantAgreement/ES/MICINN/RTI2018-097191-B-I00
000136442 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000136442 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000136442 700__ $$0(orcid)0000-0003-3823-7903$$aDíaz, Lucía-Candela$$uUniversidad de Zaragoza
000136442 700__ $$aZanini, Filippo
000136442 700__ $$0(orcid)0000-0003-4839-0610$$aAlbajez, José Antonio$$uUniversidad de Zaragoza
000136442 700__ $$aCarmignato, Simone
000136442 700__ $$0(orcid)0000-0001-7152-4117$$aYagüe-Fabra, José A.$$uUniversidad de Zaragoza
000136442 7102_ $$15002$$2515$$aUniversidad de Zaragoza$$bDpto. Ingeniería Diseño Fabri.$$cÁrea Ing. Procesos Fabricación
000136442 773__ $$g54 (2024), 1-13$$pCIRP j. manuf. sci. technol.$$tCIRP Journal of manufacturing science and technology$$x1755-5817
000136442 8564_ $$s9657931$$uhttps://zaguan.unizar.es/record/136442/files/texto_completo.pdf$$yVersión publicada
000136442 8564_ $$s2500451$$uhttps://zaguan.unizar.es/record/136442/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000136442 909CO $$ooai:zaguan.unizar.es:136442$$particulos$$pdriver
000136442 951__ $$a2024-08-22-13:18:08
000136442 980__ $$aARTICLE