Ultrasonic measurement of anisotropy and temperature dependence of elastic parameters by a dry coupling method applied to a 6061-T6 alloy.
Ultrasonics
; 46(1): 34-41, 2007 Mar.
Article
en En
| MEDLINE
| ID: mdl-17166539
A pulse-echo ultrasonic method is presented to measure elastic parameter variations during thermal loading with high accuracy. Using a dry coupling configuration dedicated to high temperature investigation, this technique has been applied on 6061-T6 aluminium samples up to 220 degrees C. Experimental settings are described to assess the measurement reproducibility estimated at a value of 0.2%. Consequently, the anisotropy of this aluminium between the rolling direction and two orthogonal axes has been clearly detected and also measured versus temperature. As regards the temperature dependence of these elastic parameters, these results are compared with the estimations of the Young's modulus obtained during mechanical tests in conditions of low cycle fatigue (LCF). The same linear variation versus temperature is found but with a shift of 7GPa. This difference has been classically attributed to systematic experimental error sources and to the distinction existing between dynamic and static elastic modulus.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Ultrasonido
/
Ensayo de Materiales
/
Aleaciones
Tipo de estudio:
Evaluation_studies
Idioma:
En
Revista:
Ultrasonics
Año:
2007
Tipo del documento:
Article
Pais de publicación:
Países Bajos