CORRELACIÓN EXPERIMENTAL SOBRE LA INFLUENCIA DE LA COMPOSICIÓN Y LA TEMPERATURA EN LAS PROPIEDADES TERMOFÍSICAS DE LOS ACEROS PARA APLICACIONES DE INGENIERÍA
Publicado 2023-12-13
Palavras-chave
- Propiedades Termofísicas,
- Método de Ajuste Progresivo,
- Generalización de Datos Experimentales,
- Error Medio Absoluto
Como Citar
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Este trabalho está licenciado sob uma licença Creative Commons Attribution 4.0 International License.
Resumo
En este trabajo es presentado un método predictivo para la estimar la variación de tres propiedades termofísicas (difusividad térmica, calor especifico y conductividad térmica) de 32 AISI-SAE clases comerciales de aceros laminados y recocidos, a una temperatura de trabajo desde 0 a 800oC y con una composición (C, Mn, S, P, Ni, Si, Mo, Cr, V). El método de ajuste de funciones es utilizado para el tratamiento y generalización de los datos experimentales disponibles, obteniéndose una ecuación que proporciona ajustes satisfactorios para extender su uso a la ingeniería térmica. Los modelos propuestos fueron verificados por comparación con datos experimentales disponibles. Para la difusividad térmica, calor especifico y conductividad térmica, los modelos obtenidos correlacionan con una desviación de , ±17.6 % y ±8.2 %, ±16.6 % respectivamente. El peor ajuste de correlación se corresponde a la difusividad térmica del acero AISI-SAE 316, con un error máximo de 17.6 % y un error medio absoluto (EMA) del 8.2 % en el 80.6% de los datos experimentales disponibles. El mejor ajuste lo proporciona el calor específico del acero AISI-SAE 1078, con un error máximo de 1.9 % y un EMA del 1.1% en el 68.3 % de las muestras experimentales disponibles. En todos los casos, el acuerdo del modelo propuesto con los datos experimentales disponibles es lo suficientemente bueno como para ser considerado satisfactorio para diseño práctico.
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