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Fatigue of Ti6Al4V structural health monitoring systems produced by selective laser melting

M Strantza, Reza Vafadari UGent, D de Baere, B Vrancken, Wim Van Paepegem UGent, I Vandendael, H Terryn, P Guillaume and D van Hemelrijck (2016) MATERIALS. 9(2).
abstract
Selective laser melting (SLM) is an additive manufacturing (AM) process which is used for producing metallic components. Currently, the integrity of components produced by SLM is in need of improvement due to residual stresses and unknown fracture behavior. Titanium alloys produced by AM are capable candidates for applications in aerospace and industrial fields due to their fracture resistance, fatigue behavior and corrosion resistance. On the other hand, structural health monitoring (SHM) system technologies are promising and requested from the industry. SHM systems can monitor the integrity of a structure and during the last decades the research has primarily been influenced by bionic engineering. In that aspect a new philosophy for SHM has been developed: the so-called effective structural health monitoring (eSHM) system. The current system uses the design freedom provided by AM. The working principle of the system is based on crack detection by means of a network of capillaries that are integrated in a structure. The main objective of this research is to evaluate the functionality of Ti6Al4V produced by the SLM process in the novel SHM system and to confirm that the eSHM system can successfully detect cracks in SLM components. In this study four-point bending fatigue tests on Ti6Al4V SLM specimens with an integrated SHM system were conducted. Fractographic analysis was performed after the final failure, while finite element simulations were used in order to determine the stress distribution in the capillary region and on the component. It was proven that the SHM system does not influence the crack initiation behavior during fatigue. The results highlight the effectiveness of the eSHM on SLM components, which can potentially be used by industrial and aerospace applications.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
RESIDUAL-STRESSES, CONTOUR METHOD, HIGH-CYCLE FATIGUE, BEHAVIOR, MICROSTRUCTURE, TI-6AL-4V, SPECIMENS, POWDER, selective laser melting, titanium alloy, structural health monitoring, fatigue, fractography
journal title
MATERIALS
Materials
volume
9
issue
2
article number
106
pages
15 pages
publisher
MDPI AG
place of publication
BASEL
Web of Science type
Article
Web of Science id
000371828100029
JCR category
MATERIALS SCIENCE, MULTIDISCIPLINARY
JCR impact factor
2.654 (2016)
JCR rank
82/275 (2016)
JCR quartile
2 (2016)
ISSN
1996-1944
DOI
10.3390/ma9020106
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
8037758
handle
http://hdl.handle.net/1854/LU-8037758
date created
2016-07-14 22:34:21
date last changed
2017-03-09 12:54:16
@article{8037758,
  abstract     = {Selective laser melting (SLM) is an additive manufacturing (AM) process which is used for producing metallic components. Currently, the integrity of components produced by SLM is in need of improvement due to residual stresses and unknown fracture behavior. Titanium alloys produced by AM are capable candidates for applications in aerospace and industrial fields due to their fracture resistance, fatigue behavior and corrosion resistance. On the other hand, structural health monitoring (SHM) system technologies are promising and requested from the industry. SHM systems can monitor the integrity of a structure and during the last decades the research has primarily been influenced by bionic engineering. In that aspect a new philosophy for SHM has been developed: the so-called effective structural health monitoring (eSHM) system. The current system uses the design freedom provided by AM. The working principle of the system is based on crack detection by means of a network of capillaries that are integrated in a structure. The main objective of this research is to evaluate the functionality of Ti6Al4V produced by the SLM process in the novel SHM system and to confirm that the eSHM system can successfully detect cracks in SLM components. In this study four-point bending fatigue tests on Ti6Al4V SLM specimens with an integrated SHM system were conducted. Fractographic analysis was performed after the final failure, while finite element simulations were used in order to determine the stress distribution in the capillary region and on the component. It was proven that the SHM system does not influence the crack initiation behavior during fatigue. The results highlight the effectiveness of the eSHM on SLM components, which can potentially be used by industrial and aerospace applications.},
  articleno    = {106},
  author       = {Strantza, M and Vafadari, Reza and de Baere, D and Vrancken, B and Van Paepegem, Wim and Vandendael, I and Terryn, H and Guillaume, P and van Hemelrijck, D},
  issn         = {1996-1944},
  journal      = {MATERIALS},
  keyword      = {RESIDUAL-STRESSES,CONTOUR METHOD,HIGH-CYCLE FATIGUE,BEHAVIOR,MICROSTRUCTURE,TI-6AL-4V,SPECIMENS,POWDER,selective laser melting,titanium alloy,structural health monitoring,fatigue,fractography},
  language     = {eng},
  number       = {2},
  pages        = {15},
  publisher    = {MDPI AG},
  title        = {Fatigue of Ti6Al4V structural health monitoring systems produced by selective laser melting},
  url          = {http://dx.doi.org/10.3390/ma9020106},
  volume       = {9},
  year         = {2016},
}

Chicago
Strantza, M, Reza Vafadari, D de Baere, B Vrancken, Wim Van Paepegem, I Vandendael, H Terryn, P Guillaume, and D van Hemelrijck. 2016. “Fatigue of Ti6Al4V Structural Health Monitoring Systems Produced by Selective Laser Melting.” Materials 9 (2).
APA
Strantza, M., Vafadari, R., de Baere, D., Vrancken, B., Van Paepegem, W., Vandendael, I., Terryn, H., et al. (2016). Fatigue of Ti6Al4V structural health monitoring systems produced by selective laser melting. MATERIALS, 9(2).
Vancouver
1.
Strantza M, Vafadari R, de Baere D, Vrancken B, Van Paepegem W, Vandendael I, et al. Fatigue of Ti6Al4V structural health monitoring systems produced by selective laser melting. MATERIALS. BASEL: MDPI AG; 2016;9(2).
MLA
Strantza, M, Reza Vafadari, D de Baere, et al. “Fatigue of Ti6Al4V Structural Health Monitoring Systems Produced by Selective Laser Melting.” MATERIALS 9.2 (2016): n. pag. Print.