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Comprehensive modelling of the hysteresis loops and strain-energy density for low-cycle fatigue-life predictions of the AZ31 magnesium alloy
ID
Klemenc, Jernej
(
Author
),
ID
Šeruga, Domen
(
Author
),
ID
Nagode, Aleš
(
Author
),
ID
Nagode, Marko
(
Author
)
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MD5: 457418A86D017DE2E8A5DBF55C15F728
URL - Source URL, Visit
https://www.mdpi.com/1996-1944/12/22/3692
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Abstract
Magnesium is one of the lightest metals for structural components. It has been used for producing various lightweight cast components, but the application of magnesium sheet plates is less widespread. There are two reasons for this: (i) its poor formability at ambient temperatures; and (ii) insufficient data on its durability, especially for dynamic loading. In this article, an innovative approach to predicting the fatigue life of the AZ31 magnesium alloy is presented. It is based on an energy approach that links the strain-energy density with the fatigue life. The core of the presented methodology is a comprehensive new model for tensile and compressive loading paths, which makes it possible to calculate the strain-energy density of closed hysteresis loops. The model is universal for arbitrary strain amplitudes. The material parameters are determined from several low-cycle fatigue tests. The presented approach was validated with examples of variable strain histories.
Language:
English
Keywords:
magnesium AZ31
,
variable loading history
,
low-cycle fatigue
,
hysteresis-loop model
,
energy approach
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FS - Faculty of Mechanical Engineering
NTF - Faculty of Natural Sciences and Engineering
Publication status:
Published
Publication version:
Version of Record
Year:
2019
Number of pages:
24 str.
Numbering:
Vol. 12, iss. 22, art. 3692
PID:
20.500.12556/RUL-112752
UDC:
620.178.3(045)
ISSN on article:
1996-1944
DOI:
10.3390/ma12223692
COBISS.SI-ID:
16894235
Publication date in RUL:
11.11.2019
Views:
1232
Downloads:
556
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Record is a part of a journal
Title:
Materials
Shortened title:
Materials
Publisher:
Molecular Diversity Preservation International
ISSN:
1996-1944
COBISS.SI-ID:
33588485
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:
08.11.2019
Secondary language
Language:
Slovenian
Keywords:
magnezij
,
utrujanje
,
histerezna zanka
,
energijska metoda
,
naključna obremenitev
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P2-0182
Name:
Razvojna vrednotenja
Funder:
Other - Other funder or multiple funders
Funding programme:
Ministry of Education, Science and Sport
Project number:
C3330-16-529001
Acronym:
EVA4green
Funder:
Other - Other funder or multiple funders
Funding programme:
Ministry of Education, Science and Sport
Project number:
OP20.00362
Acronym:
EVA4green
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