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Boletín de la Sociedad Española de Cerámica y Vidrio
Article . 2012 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
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Article . 2012
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Simulación numérica de ensayos de compresión diametral para la evaluación de discos cerámicos porosos

Authors: Sandoval, María Laura; Tomba Martinez, Analia Gladys; Camerucci, Maria Andrea;

Simulación numérica de ensayos de compresión diametral para la evaluación de discos cerámicos porosos

Abstract

Se estudió el comportamiento mecánico de materiales porosos de cordierita mediante ensayos en compresión diametral. La solución analítica que permite la medición indirecta de la resistencia mecánica a tracción en compresión diametral se formula bajo ciertas condiciones que no suelen satisfacerse en la práctica. Con el objetivo de analizar desviaciones de las condiciones ideales se simuló el ensayo con técnicas computacionales. Los discos porosos de cordierita se obtuvieron por calcinación (650 °C, 2h) y reacción-sinterización (1330 °C, 4h) de cuerpos en verde preparados por consolidación térmica (85 °C, 4h) de suspensiones acuosas de una mezcla precursora de cordierita (caolín, talco y alúmina) con almidón nativo de papa. Los ensayos mecánicos se realizaron en una máquina servohidráulica en control por desplazamiento (0,2 mm/min). A partir de la relación aparente tensión-deformación se determinaron los parámetros mecánicos: módulo de Young aparente, resistencia mecánica y límite elástico. Sobre los discos ensayados se analizaron las características de la fractura. La influencia de las desviaciones geométricas más frecuentes identificadas en la práctica (desviación de la circularidad y no paralelismo entre las caras del disco) sobre la distribución de tensiones se estudió mediante la simulación por elementos finitos, tomando como referencia la ecuación de Hertz para problemas de contacto.

Peer reviewed

Countries
Spain, Argentina
Keywords

Cordierita, Porous ceramics, Clay industries. Ceramics. Glass, Numerical simulation, Cerámicos porosos, DIAMETRAL COMPRESSION, Cordierite, CERAMICOS POROSOS, Compresión diametral, POROUS CERAMICS, TP785-869, Simulación numérica, CORDIERITE, https://purl.org/becyt/ford/2.5, https://purl.org/becyt/ford/2.3, CORDIERITA, NUMERICAL SIMULATION, SIMULACION NUMERICA, https://purl.org/becyt/ford/2, COMPRESION DIAMETRAL, Diametral compression

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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