Your browser does not allow JavaScript!
JavaScript is necessary for the proper functioning of this website. Please enable JavaScript or use a modern browser.
Open Science Slovenia
Open Science
DiKUL
slv
|
eng
Search
Browse
New in RUL
About RUL
In numbers
Help
Sign in
Frequency-dependent fatigue properties of additively manufactured PLA
ID
Česnik, Martin
(
Author
),
ID
Slavič, Janko
(
Author
)
URL - Source URL, Visit
https://www.mdpi.com/2073-4360/16/15/2147
Image galllery
Abstract
Vibration-fatigue failure occurs when a structure is dynamically excited within its natural frequency range. Unlike metals, which have constant fatigue parameters, polymers can exhibit frequency-dependent fatigue parameters, significantly affecting the vibration resilience of 3D-printed polymer structures. This manuscript presents a study utilizing a novel vibration-fatigue testing methodology to characterize the frequency dependence of polymer material fatigue parameters under constant temperature conditions. In this investigation, 3D-printed PLA samples with frequency-tunable geometry were experimentally tested on an electro-dynamical shaker with a random vibration profile. Using the validated numerical models, the estimation of vibration-fatigue life was obtained and compared to the experimental results. Performing the numerical minimization of estimated and actual fatigue lives, the frequency-dependent fatigue parameters were assessed. In particular, the results indicate that the tested samples exhibit varying fatigue parameters within the loading frequency range of 250–750 Hz. Specifically, as the loading frequency increases, the fatigue exponent increases and fatigue strength decreases. These findings confirm the frequency dependence of fatigue parameters for 3D-printed polymer structures, underscoring the necessity of experimental characterization to reliably estimate the vibration-fatigue life of 3D-printed polymer structures. The utilization of the introduced approach therefore enhances the vibration resilience of the 3D-printed polymer mechanical component.
Language:
English
Keywords:
fatigue properties
,
frequency dependence
,
vibration-fatigue test
,
high-frequency dynamic responses
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FS - Faculty of Mechanical Engineering
Publication status:
Published
Year:
2024
Number of pages:
13 str.
Numbering:
Vol. 16, no. 15, art. 2147
PID:
20.500.12556/RUL-159913
UDC:
620.178.3
ISSN on article:
2073-4360
DOI:
10.3390/polym16152147
COBISS.SI-ID:
203108099
Publication date in RUL:
30.07.2024
Views:
112
Downloads:
11
Metadata:
Cite this work
Plain text
BibTeX
EndNote XML
EndNote/Refer
RIS
ABNT
ACM Ref
AMA
APA
Chicago 17th Author-Date
Harvard
IEEE
ISO 690
MLA
Vancouver
:
Copy citation
Share:
Record is a part of a journal
Title:
Polymers
Shortened title:
Polymers
Publisher:
Molecular Diversity Preservation International
ISSN:
2073-4360
COBISS.SI-ID:
517951257
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.
Secondary language
Language:
Slovenian
Keywords:
lastnosti utrujenosti
,
frekvenčna odvisnost
,
preskus vibracij
,
preskus utrujenosti
,
visokofrekvenčni dinamični odzivi
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P2-0263
Name:
Mehanika v tehniki
Similar documents
Similar works from RUL:
Similar works from other Slovenian collections:
Back