中文版 | English
Title

Fatigue of octet-truss lattices manufactured by Laser Powder Bed Fusion

Author
Corresponding AuthorLi, Yifan
Publication Years
2023-05-01
DOI
Source Title
ISSN
0142-1123
EISSN
1879-3452
Volume170
Abstract
The octet-truss lattice is a three-dimensional lattice with high strength and low density. Practical use of these lattices requires a knowledge of their resistance to fatigue crack growth. Lattice specimens manufactured by laser powder bed fusion technique were prepared with different orientations to explore the orientation effects on lattice fatigue behaviour. X-ray tomography was used to measure the surface roughness of the lattice struts, and also used to validate the accuracy of the crack length measurement by compliance method. The experimental results show that the fatigue crack growth rate and crack growth path depend on the orientation of the lattice. A finite element prediction of the fatigue life of the lattice was carried out, based on measurements of the fatigue life of single struts cut from the lattice. The finite element predictions were in good agreement with the experimental results. A procedure for predicting the crack growth path was proposed. These findings can help designers optimize the orientation of lattice structures in structural applications.
Keywords
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
Corresponding
WOS Research Area
Engineering ; Materials Science
WOS Subject
Engineering, Mechanical ; Materials Science, Multidisciplinary
WOS Accession No
WOS:000922452800001
Publisher
ESI Research Field
MATERIALS SCIENCE
Scopus EID
2-s2.0-85149784429
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:1
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/475088
DepartmentDepartment of Mechanics and Aerospace Engineering
Affiliation
1.Univ Bristol, Dept Mech Engn, Queens Bldg,Univ Walk, Bristol BS8 1TR, England
2.Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, England
3.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Guangdong, Peoples R China
First Author AffilicationDepartment of Mechanics and Aerospace Engineering
Corresponding Author AffilicationDepartment of Mechanics and Aerospace Engineering
Recommended Citation
GB/T 7714
Li, Yifan,Attallah, Moataz M.,Coules, Harry,et al. Fatigue of octet-truss lattices manufactured by Laser Powder Bed Fusion[J]. INTERNATIONAL JOURNAL OF FATIGUE,2023,170.
APA
Li, Yifan,Attallah, Moataz M.,Coules, Harry,Martinez, Rafael,&Pavier, Martyn.(2023).Fatigue of octet-truss lattices manufactured by Laser Powder Bed Fusion.INTERNATIONAL JOURNAL OF FATIGUE,170.
MLA
Li, Yifan,et al."Fatigue of octet-truss lattices manufactured by Laser Powder Bed Fusion".INTERNATIONAL JOURNAL OF FATIGUE 170(2023).
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