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Experimental and numerical investigation of crack closure measurements with electrical potential drop technique

Andersson, Michael LU ; Persson, Christer LU and Melin, Solveig LU (2006) In International Journal of Fatigue 28(9). p.1059-1068
Abstract
Crack closure measurements during fatigue crack propagation using the electrical potential drop (PD) technique is evaluated using a combination of experiments and simulations. From finite element simulations it is shown that variations in the potential drop value over a fatigue cycle can be explained by crack closure and strain induced conductivity changes. It is also demonstrated that closure measurements made with PD are consistent with closure observations made from in situ SEM observations of crack closure. Finally, it was observed that closure measurements made by a compliance-based measuring technique gave a somewhat lower opening load as compared to the PD-measurement.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
in situ SEM, crack closure, potential drop
in
International Journal of Fatigue
volume
28
issue
9
pages
1059 - 1068
publisher
Elsevier
external identifiers
  • wos:000238922400013
  • scopus:33748892241
ISSN
1879-3452
DOI
10.1016/j.ijfatigue.2005.11.005
language
English
LU publication?
yes
id
04960f10-6752-489c-bf17-95af73ea83d3 (old id 404146)
date added to LUP
2016-04-01 12:34:36
date last changed
2020-03-11 03:01:33
@article{04960f10-6752-489c-bf17-95af73ea83d3,
  abstract     = {Crack closure measurements during fatigue crack propagation using the electrical potential drop (PD) technique is evaluated using a combination of experiments and simulations. From finite element simulations it is shown that variations in the potential drop value over a fatigue cycle can be explained by crack closure and strain induced conductivity changes. It is also demonstrated that closure measurements made with PD are consistent with closure observations made from in situ SEM observations of crack closure. Finally, it was observed that closure measurements made by a compliance-based measuring technique gave a somewhat lower opening load as compared to the PD-measurement.},
  author       = {Andersson, Michael and Persson, Christer and Melin, Solveig},
  issn         = {1879-3452},
  language     = {eng},
  number       = {9},
  pages        = {1059--1068},
  publisher    = {Elsevier},
  series       = {International Journal of Fatigue},
  title        = {Experimental and numerical investigation of crack closure measurements with electrical potential drop technique},
  url          = {http://dx.doi.org/10.1016/j.ijfatigue.2005.11.005},
  doi          = {10.1016/j.ijfatigue.2005.11.005},
  volume       = {28},
  year         = {2006},
}