Fracture toughness characterization through notched small punch test specimens

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Title: Fracture toughness characterization through notched small punch test specimens
Authors: Martinez-Paneda, E
Garcia, TE
Rodriguez, C
Item Type: Journal Article
Abstract: In this work a novel methodology for fracture toughness characterization by means of the small punch test (SPT) is presented. Notched specimens are employed and fracture resistance is assessed through a critical value of the notch mouth displacement . Finite element simulations and interrupted experiments are used to track the evolution of as a function of the punch displacement. The onset of crack propagation is identified by means of a ductile damage model and the outcome is compared to the crack tip opening displacement estimated from conventional tests at crack initiation. The proposed numerical–experimental scheme is examined with two different grades of CrMoV steel and the differences in material toughness captured. Limitations and uncertainties arising from the different damage phenomena observed in the lowest toughness material examined are thoroughly discussed.
Issue Date: 7-Mar-2016
Date of Acceptance: 25-Jan-2016
URI: http://hdl.handle.net/10044/1/73435
DOI: https://doi.org/10.1016/j.msea.2016.01.077
ISSN: 0921-5093
Publisher: Elsevier
Start Page: 422
End Page: 430
Journal / Book Title: Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume: 657
Copyright Statement: © 2016 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/.
Keywords: Science & Technology
Technology
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Science & Technology - Other Topics
Materials Science
Small punch test
Fracture toughness
Damage
Finite elements
ODD
DUCTILE FRACTURE
DAMAGE
PARAMETERS
STEELS
METHODOLOGY
TENSILE
GROWTH
MODELS
VOIDS
CRACK
Science & Technology
Technology
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Science & Technology - Other Topics
Materials Science
Small punch test
Fracture toughness
Damage
Finite elements
ODD
DUCTILE FRACTURE
DAMAGE
PARAMETERS
STEELS
METHODOLOGY
TENSILE
GROWTH
MODELS
VOIDS
CRACK
cond-mat.mtrl-sci
cond-mat.mtrl-sci
0912 Materials Engineering
0913 Mechanical Engineering
Materials
Publication Status: Published
Online Publication Date: 2016-01-29
Appears in Collections:Civil and Environmental Engineering



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