{"ok":true,"nota":{"id":"b6f25ed790d37d5d","slug":"revision-sobre-como-lograr-piezas-de-plastico-impresas-con-distinta-du-b6f25e","titulo":"Revisión sobre cómo lograr piezas de plástico impresas con distinta dureza según la zona","resumen":"Revisión de trabajos técnicos sobre impresión 3D con resina por fotopolimerización, en la que se controla la cantidad de luz que recibe cada zona para variar la conversión del material. Se plantea que una imagen digital no garantiza por sí sola las propiedades finales de la pieza.","fuente":"zenodo","fuenteNombre":"Zenodo · Investigación abierta","color":"#1682d4","autor":"Segurola, Juan","url":"https://doi.org/10.5281/zenodo.22873650","imagen":"/hoy/portada/b6f25ed790d37d5d","tema":"ciencia","subtemas":["impresión 3d","fotopolimerización","materiales","ingeniería de materiales"],"entidades":["Zenodo"],"formato":"dato","entretenimiento":false,"pubTs":"2026-10-22T16:26:28.000Z","indexTs":"2026-10-24T23:54:05.324Z","hash":"e98cd4390a50680f2f66fc52226717f18e1be2f0d4da9a8d194e06212caae08c","tsa":{"time":"Oct 24 23:54:28 2026 GMT","provider":"freetsa.org","sobre":"sello"},"stats":{"views":0,"likes":0,"clicks":0,"dwell":0},"tipo":"normal","registro":"hallazgo","porQueImporta":"La impresión 3D con resina ya está en talleres y laboratorios de la región, y este trabajo advierte que una pieza no siempre resulta como indica el archivo digital. Un diseño pensado para ser más resistente en una zona puede salir más frágil de lo previsto. Para quien compra o encarga piezas impresas, conviene desconfiar de las promesas de resistencia que no vienen acompañadas de ensayos.","quienFirma":"Zenodo (autores no identificados en el extracto)","confianza":"preprint","consulta":null},"sello":{"hash":"e98cd4390a50680f2f66fc52226717f18e1be2f0d4da9a8d194e06212caae08c","sello":"baa3deba1a9240a7ecb0a31199a4be8c868fc8cad85f0feca8e054306452c4d1","beacon":{"drand":{"cadena":"8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce","ronda":6581834,"aleatorio":"95704d1a92d8a01a92739e5b6adca4f229e434c0cbe8d21bc2defbe32f109d19","tiempo":"2026-10-24T23:54:00.000Z"},"nist":{"cadena":2,"pulso":1998110,"salida":"52B7E64B46E9F87A6AE47DF6C209276A598EA34A1CFE812B8C6F5F877B8CC0B14E7F265149628DD86DB8E20C3B0E07BC4E60A04AD073C8F0022501F4FE05F6AF","tiempo":"2026-10-24T23:53:00.000Z"},"noAntes":"2026-10-24T23:54:00.000Z"},"verificacion":{"drand":true,"nist":true},"tsa":{"time":"Oct 24 23:54:28 2026 GMT","provider":"freetsa.org","sobre":"sello"},"original":{"titulo":"Grayscale and Spatial Dose Modulation in Vat Photopolymerisation: Local Conversion, Surface Shape and Property Gradients","descripcion":"<p>Grayscale vat photopolymerisation uses spatially varied exposure to produce an intended field of conversion, surface height or material response. The digital image is only the first link in a chain. Grayscale code, irradiance, exposure dose, local reaction history, conversion, network state and mechanical property are not interchangeable. Projector nonlinearity, oxygen inhibition, absorption, scattering, diffusion, heat, accumulated layer exposure, shrinkage and post-treatment can make the response nonlocal, nonlinear and history dependent. Equal nominal dose delivered through different intensity-time pairs may not be equivalent, and a conversion gradient does not uniquely establish a modulus, toughness or residual-monomer gradient. This review establishes a qualification framework for intentional spatial dose modulation in vat photopolymerisation. It requires code-to-irradiance calib","pubDate":"2026-10-22T16:26:28Z","url":"https://doi.org/10.5281/zenodo.22873650"},"indexado":"2026-10-24T23:54:05.324Z"}}