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

Pérez Martín, Maria Jesus and Erice Echávarri, Borja and Gálvez Díaz-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. https://doi.org/10.1016/j.mspro.2014.06.167.

Description

Title: On the loading-rate dependence of the Al 7017-T73 fracture-initiation toughness
Author/s:
  • Pérez Martín, Maria Jesus
  • Erice Echávarri, Borja
  • Gálvez Díaz-Rubio, Francisco
Item Type: Article
Título de Revista/Publicación: Procedia Materials Science
Date: 2014
ISSN: 2211-8128
Volume: 3
Subjects:
Freetext Keywords: Fracture-initiation toughness; loading-rate; free-drop tower; Split Hopkinson Pressure Bar; impulsive loading
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainBIA2011-24445UnspecifiedUnspecifiedUnspecified

More information

Item ID: 35128
DC Identifier: http://oa.upm.es/35128/
OAI Identifier: oai:oa.upm.es:35128
DOI: 10.1016/j.mspro.2014.06.167
Official URL: http://www.sciencedirect.com/science/article/pii/S2211812814001680
Deposited by: Memoria Investigacion
Deposited on: 11 May 2015 15:44
Last Modified: 06 May 2019 10:44
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