Prueba de impacto: ensayo Charpy
Y. Ortega
Departamento de Física de Materiales, Facultad de Ciencias Físicas Universidad Complutense de Madrid, 28040, Madrid, España.
Recibido el 11 de mayo de 2005; ]]> Aceptado el 27 de junio de 2005.
Resumen
En este trabajo se presentan algunos resultados interesantes de pruebas de impacto Charpy. A través del comportamiento a la fractura de diversos metales y polímeros, han sido analizados, de una forma didáctica, diversos factores, tales como: el incremento de la velocidad de impacto, la presencia de entallas y la transición dúctil-frágil con el decrecimiento de la temperatura.
Descriptores: Prueba de impacto Charpy; pruebas mecánicas; efecto de los tratamientos en los materiales.
Abstract
In this paper some interesting results of Charpy impact tests are presented. The increase in the impact velocity, the present of a sharp notch and the ductile-to-brittle transition with decreasing temperature have been treated in a didactic way, by analyzing the fracture behaviour of several metals and polymers.
Keywords: Impact test; mechanical testing; materials treatment effects.
]]> PACS: 81.05.-t; 81.70.B; 81.40
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