On the loading-rate dependence of the Al 7017-T73 fracture-initiation toughness

Pérez Martín, Maria Jesus; Erice Echávarri, Borja y Galvez Diaz-Rubio, Francisco (2014). On the loading-rate dependence of the Al 7017-T73 fracture-initiation toughness. "Procedia Materials Science", v. 3 ; pp. 1026-1031. ISSN 2211-8128.

Descripción

Título: On the loading-rate dependence of the Al 7017-T73 fracture-initiation toughness
Autor/es:
  • Pérez Martín, Maria Jesus
  • Erice Echávarri, Borja
  • Galvez Diaz-Rubio, Francisco
Tipo de Documento: Artículo
Título de Revista/Publicación: Procedia Materials Science
Fecha: 2014
Volumen: 3
Materias:
Palabras Clave Informales: Fracture-initiation toughness; loading-rate; free-drop tower; Split Hopkinson Pressure Bar; impulsive loading
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

While static fracture toughness is a widely studied and standardised parameter, its dynamic counterpart has not been exhaustively examined. Therefore, in this research a series of quasi-static and different loading-rate dynamic tests were carried out to determine the evolution of fracture toughness with the velocity of the application of the load on aluminium 7017-T73 alloy. Three-point bending tests of pre-fatigued standard specimens (ASTM E399) at four loading-rates were carried out. The experiments were conducted by employing the subsequent apparatus ordered from lowest to highest load application velocity: a servo-hydraulic universal testing machine, a free-drop tower, a modified Split Hopkinson Pressure Bar and an explosive load testing device. In order to perform the dynamic fracture toughness tests, it was necessary to design and develop some experimental devices. The fracture-initiation toughness of the aluminium 7017-T73 alloy did not exhibit a significant variation for the studied cases. As a conclusion, the research showed that fracture-initiation toughness remained constant regardless of the velocity at which the load was applied.

Más información

ID de Registro: 35128
Identificador DC: http://oa.upm.es/35128/
Identificador OAI: oai:oa.upm.es:35128
Depositado por: Memoria Investigacion
Depositado el: 11 May 2015 15:44
Ultima Modificación: 18 May 2015 15:43
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