Predicción mediante redes neuronales de los parámetros de diseño y de proceso para la fabricación por estereolitografía enmascarada (MSLA) de scaffolds sometidos a cargas de compresión
dc.contributor.advisor | Narváez Tovar, Carlos Alberto | spa |
dc.contributor.author | Najar Gomez, Brayan Sebastian | spa |
dc.contributor.researchgroup | Innovación en Procesos de Manufactura E Ingeniería de Materiales (Ipmim) | spa |
dc.date.accessioned | 2025-04-01T19:15:58Z | |
dc.date.available | 2025-04-01T19:15:58Z | |
dc.date.issued | 2024-10-22 | |
dc.description | ilustraciones, diagramas, fotografías | spa |
dc.description.abstract | En el presente trabajo se tiene por objetivo predecir mediante redes neuronales los parámetros de diseño y de proceso para la fabricación por estereolitografía enmascarada de scaffolds sometidos a cargas de compresión. Para ello se trabajó sobre una base de datos construida a partir de un diseño experimental Taguchi L9. Los parámetros por predecir corresponden a la compensación de la superficie media (O), el tamaño de la celda unitaria (CS) y el espesor de capa (LT). Las variables de entrada corresponden al esfuerzo de fluencia al 0.1% (Sy), así como el módulo elástico (E). Se planteo un modelo de regresión para los parámetros de O y CS, y un modelo de clasificación para LT. Para la definición de las arquitecturas de redes neuronales se recurrió a tres algoritmos de ajuste de hiperparámetros, los cuales corresponden a: GridSearch, RandomSearch y CoarseToFineSearch. El modelo de regresión seleccionado presenta tres (3) capas ocultas, con 8, 18 y 14 neuronas respectivamente, logrando un error medio absoluto (MAE) de 0.011 para el parámetro O, y de 0.144 para CS. En cuanto al modelo de clasificación la arquitectura consta de tres (3) capas ocultas, con 20, 20 y 16 neuronas respectivamente. La exactitud del modelo es de 77.8 %, sin embargo, hay presencia de sobreajuste. Durante la validación, se observó que el modelo mantiene la relación lineal entre E y Sy, con errores absolutos entre 0.176 MPa y 2.393 MPa para Sy y 5.07 MPa y 44.081 MPa para E. (Texto tomado de la fuente). | spa |
dc.description.abstract | This work aims to predict, through neural networks, the design and process parameters for the fabrication of scaffolds subjected to compression loads using masked stereolithography. A database was built based on a Taguchi L9 experimental design. The parameters to be predicted are the mean surface compensation (O), unit cell size (CS), and layer thickness (LT). The input variables are the 0.1% yield strength (Sy) and the elastic modulus (E). A regression model was developed for the O and CS parameters, and a classification model was developed for LT. Three hyperparameter tuning algorithms were used to define the neural network architectures: GridSearch, RandomSearch, and CoarseToFineSearch. The selected regression model consists of three hidden layers with 8, 18, and 14 neurons, achieving a mean absolute error (MAE) of 0.011 for the O parameter and 0.144 for CS. The classification model's architecture consists of three hidden layers with 20, 20, and 16 neurons, respectively, achieving an accuracy of 77.8%, although overfitting was present. During validation, it was observed that the model maintains the linear relationship between E and Sy, with absolute errors ranging from 0.176 MPa to 2.393 MPa for Sy and from 5.07 MPa to 44.081 MPa for E. | eng |
dc.description.degreelevel | Maestría | spa |
dc.description.degreename | Magíster en Ingeniería Mecánica | spa |
dc.description.researcharea | Ingeniería de materiales y procesos de manufactura | spa |
dc.format.extent | xvi, 95 páginas | spa |
dc.format.mimetype | application/pdf | spa |
dc.identifier.instname | Universidad Nacional de Colombia | spa |
dc.identifier.reponame | Repositorio Institucional Universidad Nacional de Colombia | spa |
dc.identifier.repourl | https://repositorio.unal.edu.co/ | spa |
dc.identifier.uri | https://repositorio.unal.edu.co/handle/unal/87804 | |
dc.language.iso | spa | spa |
dc.publisher | Universidad Nacional de Colombia | spa |
dc.publisher.branch | Universidad Nacional de Colombia - Sede Bogotá | spa |
dc.publisher.department | Departamento de Ingeniería Mecánica y Mecatrónica | spa |
dc.publisher.faculty | Facultad de Ingeniería | spa |
dc.publisher.place | Bogotá, Colombia | spa |
dc.publisher.program | Bogotá - Ingeniería - Maestría en Ingeniería - Ingeniería Mecánica | spa |
dc.relation.indexed | Bireme | spa |
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dc.rights.accessrights | info:eu-repo/semantics/openAccess | spa |
dc.rights.license | Atribución-NoComercial-CompartirIgual 4.0 Internacional | spa |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | spa |
dc.subject.ddc | 620 - Ingeniería y operaciones afines::629 - Otras ramas de la ingeniería | spa |
dc.subject.ddc | 600 - Tecnología (Ciencias aplicadas)::607 - Educación, investigación, temas relacionados | spa |
dc.subject.decs | Andamios del Tejido | spa |
dc.subject.decs | Tissue Scaffolds | eng |
dc.subject.decs | Redes Neuronales Celulares Computacionales | spa |
dc.subject.decs | Cellular Neural Networks, Computer | eng |
dc.subject.proposal | Manufactura aditiva | spa |
dc.subject.proposal | Estereolitografía enmascarada | spa |
dc.subject.proposal | Redes neuronales artificiales | spa |
dc.subject.proposal | Scaffold | eng |
dc.subject.proposal | Propiedades mecánicas | spa |
dc.subject.proposal | Resistencia a compresión | spa |
dc.subject.proposal | Additive manufacturing | eng |
dc.subject.proposal | Masked stereolithography | eng |
dc.subject.proposal | Artificial neural networks | eng |
dc.subject.proposal | Mechanical properties | eng |
dc.subject.proposal | Compression strength | eng |
dc.subject.wikidata | estereolitografía | spa |
dc.subject.wikidata | stereolithography | eng |
dc.title | Predicción mediante redes neuronales de los parámetros de diseño y de proceso para la fabricación por estereolitografía enmascarada (MSLA) de scaffolds sometidos a cargas de compresión | spa |
dc.title.translated | Design and manufacturing parameters prediction by neural networks for the fabrication by MSLA of scaffolds subjected to compression load | eng |
dc.type | Trabajo de grado - Maestría | spa |
dc.type.coar | http://purl.org/coar/resource_type/c_bdcc | spa |
dc.type.coarversion | http://purl.org/coar/version/c_ab4af688f83e57aa | spa |
dc.type.content | Text | spa |
dc.type.driver | info:eu-repo/semantics/masterThesis | spa |
dc.type.redcol | http://purl.org/redcol/resource_type/TM | spa |
dc.type.version | info:eu-repo/semantics/acceptedVersion | spa |
dcterms.audience.professionaldevelopment | Estudiantes | spa |
dcterms.audience.professionaldevelopment | Investigadores | spa |
dcterms.audience.professionaldevelopment | Maestros | spa |
oaire.accessrights | http://purl.org/coar/access_right/c_abf2 | spa |
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