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Boletín de la Sociedad Española de Cerámica y Vidrio
Article . 2001 . Peer-reviewed
License: Elsevier TDM
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Article . 2001
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Revisión de la técnica de doble torsión y del método experimental en materiales cerámicos

A review of double torsion testing in ceramic materials
Authors: de Aza Moya, Antonio; Chevalier, Jérôme;

Revisión de la técnica de doble torsión y del método experimental en materiales cerámicos

Abstract

[ES] La técnica de doble torsión tiene numerosas ventajas a la hora de evaluar el crecimiento subcritico de grieta en un material cerámico. Estas ventajas, entre otras, son: independencia del factor de intensidad de tensiones, KI, con respecto a la longitud de grieta, configuración de carga en cuatro puntos y facilidad de prefisuracion. Sin embargo, aun hoy en día, algunas preguntas sobre esta técnica quedan sin respuesta. En el presente trabajo se hace referencia a estas cuestiones, se revisan las expresiones analíticas de la flexibilidad y el factor de intensidad de tensiones, KI, propuestas en la literatura científica para la configuración particular de la doble torsión, y se examina el método de trabajo experimental, ensayo de relajación de carga, tratando de definir las condiciones en las cuales los datos obtenidos son validos.

[EN] The double torsion test configuration has many advantages for the evaluation of subcritical crack growth parameters and fracture toughness. These advantages are: crack-length independence, four-point loading, simple specimen geometry and ease of precraking. However , a number of unresolved questions need to be answered about the double torsion specimen and experimental techniques involved in its use before this testing can be adopted as a standard. In this paper these questions are addressed, the analyses of the compliance and KI for the double torsion configuration are revised, and the load relaxation test in double torsion is examined in order to define the conditions under which de data are valid.

A.H. De Aza desea agradecer al Ministerio de Educación y Cultura Español la concesión de una beca en el extranjero (PF 98 05271356).

Peer reviewed

Keywords

Flexibilidad, Slow crack-growth, Ensayo de relajación, ensayo de relajación, Load relaxation test, Clay industries. Ceramics. Glass, compliance analysis, flexibilidad, [SPI.MECA.MEMA] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph], load relaxation test, crecimiento subcrítico de grieta, Compliance analysis, TP785-869, Double-torsion testing, doble torsión, Doble torsión, Corrección al valor de KI en DT, KI correction factor, Crecimiento subcrítico de grieta, slow crack-growth, corrección al valor de KI en DT

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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).
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impulse
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