Fatigue crack propagation in Ti-6Al-4V subjected to high strain amplitudes
(2005) In Fatigue & Fracture of Engineering Materials & Structures 28(3). p.301-308- Abstract
- Fatigue crack propagation in circular Ti-6Al-4V specimens subjected to high strain amplitudes has been investigated. Crack closure was measured with an electrical potential-drop technique. Closure was shown not to depend on strain ratio but to be a function of the applied strain range. At higher strain ranges, the crack was found to be closed for a smaller part of the load cycle than at lower strain ranges due to blunting of the crack tip. Furthermore, the use of a strain-intensity approach to predict crack-propagation rate was investigated, and it was found that for the upper parts of the da/dN curves the effective strain intensity yields good predictions. Also, the effective stress-intensity factor was found to collapse the da/dN curves... (More)
- Fatigue crack propagation in circular Ti-6Al-4V specimens subjected to high strain amplitudes has been investigated. Crack closure was measured with an electrical potential-drop technique. Closure was shown not to depend on strain ratio but to be a function of the applied strain range. At higher strain ranges, the crack was found to be closed for a smaller part of the load cycle than at lower strain ranges due to blunting of the crack tip. Furthermore, the use of a strain-intensity approach to predict crack-propagation rate was investigated, and it was found that for the upper parts of the da/dN curves the effective strain intensity yields good predictions. Also, the effective stress-intensity factor was found to collapse the da/dN curves for different load ratios. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/250556
- author
- Andersson, Michael LU ; Hansson, Tomas ; Persson, Christer LU and Melin, Solveig LU
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- crack propagation, fatigue, crack closure, strain-intensity factor
- in
- Fatigue & Fracture of Engineering Materials & Structures
- volume
- 28
- issue
- 3
- pages
- 301 - 308
- publisher
- Wiley-Blackwell
- external identifiers
-
- wos:000227382900004
- scopus:14544299596
- ISSN
- 1460-2695
- DOI
- 10.1111/j.1460-2695.2004.00858.x
- language
- English
- LU publication?
- yes
- id
- 90b37e5c-f7cb-4c94-8f85-076ca3ec6a12 (old id 250556)
- alternative location
- http://search.ebscohost.com/login.aspx?direct=true&db=a9h&AN=15924441&site=ehost-live
- date added to LUP
- 2016-04-01 12:05:12
- date last changed
- 2022-01-26 22:35:16
@article{90b37e5c-f7cb-4c94-8f85-076ca3ec6a12,
abstract = {{Fatigue crack propagation in circular Ti-6Al-4V specimens subjected to high strain amplitudes has been investigated. Crack closure was measured with an electrical potential-drop technique. Closure was shown not to depend on strain ratio but to be a function of the applied strain range. At higher strain ranges, the crack was found to be closed for a smaller part of the load cycle than at lower strain ranges due to blunting of the crack tip. Furthermore, the use of a strain-intensity approach to predict crack-propagation rate was investigated, and it was found that for the upper parts of the da/dN curves the effective strain intensity yields good predictions. Also, the effective stress-intensity factor was found to collapse the da/dN curves for different load ratios.}},
author = {{Andersson, Michael and Hansson, Tomas and Persson, Christer and Melin, Solveig}},
issn = {{1460-2695}},
keywords = {{crack propagation; fatigue; crack closure; strain-intensity factor}},
language = {{eng}},
number = {{3}},
pages = {{301--308}},
publisher = {{Wiley-Blackwell}},
series = {{Fatigue & Fracture of Engineering Materials & Structures}},
title = {{Fatigue crack propagation in Ti-6Al-4V subjected to high strain amplitudes}},
url = {{http://dx.doi.org/10.1111/j.1460-2695.2004.00858.x}},
doi = {{10.1111/j.1460-2695.2004.00858.x}},
volume = {{28}},
year = {{2005}},
}