Damage modeling in Small Punch Test specimens
File(s)1711.06850v1.pdf (5.03 MB)
Accepted version
Author(s)
Martinez-Paneda, E
Cuesta, II
Penuelas, I
Diaz, A
Alegre, JM
Type
Journal Article
Abstract
Ductile damage modeling within the Small Punch Test (SPT) is extensively investigated. The capabilities of the SPT to reliably estimate fracture and damage properties are thoroughly discussed and emphasis is placed on the use of notched specimens. First, different notch profiles are analyzed and constraint conditions quantified. The role of the notch shape is comprehensively examined from both triaxiality and notch fabrication perspectives. Afterwards, a methodology is presented to extract the micromechanical-based ductile damage parameters from the load-displacement curve of notched SPT samples. Furthermore, Gurson-Tvergaard-Needleman model predictions from a top-down approach are employed to gain insight into the mechanisms governing crack initiation and subsequent propagation in small punch experiments. An accurate assessment of micromechanical toughness parameters from the SPT is of tremendous relevance when little material is available.
Date Issued
2016-12-01
Date Acceptance
2016-09-04
Citation
Theoretical and Applied Fracture Mechanics, 2016, 86 (Part A), pp.51-60
ISSN
0167-8442
Publisher
Elsevier
Start Page
51
End Page
60
Journal / Book Title
Theoretical and Applied Fracture Mechanics
Volume
86
Issue
Part A
Copyright Statement
© 2019 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/.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000389111500009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Technology
Engineering, Mechanical
Mechanics
Engineering
Small Punch Test
Fracture toughness
Ductile damage
Finite element method
FRACTURE-TOUGHNESS
DUCTILE FRACTURE
PARAMETERS
STEELS
VOIDS
Publication Status
Published
Coverage Spatial
San Sebastian, SPAIN
Date Publish Online
2016-09-07