Thermo-mechanical fatigue crack propagation experiments in Inconel 718
(2009) In International Journal of Fatigue 31(8-9). p.1318-1326- Abstract
- An experimental test facility was developed to perform thermo-mechanical fatigue crack growth experiments. The thermal cycles were generated using hot and cold air flows distributed by a nozzle onto the test specimen. With the equipment it was possible to obtain TMF cycles with cycle times of 120 s with less than 10 °C temperature variation over the measurement length of the sample, cycling between 200 °C and 550 °C. The equipment allows TMF crack propagation tests up to, at least, 600 °C. The crack length and the crack closure level were determined using the potential drop technique. Thermo-mechanical fatigue crack propagation experiments were performed in-phase and out-of-phase with various R-values on samples of Inconel 718. Cylindrical... (More)
- An experimental test facility was developed to perform thermo-mechanical fatigue crack growth experiments. The thermal cycles were generated using hot and cold air flows distributed by a nozzle onto the test specimen. With the equipment it was possible to obtain TMF cycles with cycle times of 120 s with less than 10 °C temperature variation over the measurement length of the sample, cycling between 200 °C and 550 °C. The equipment allows TMF crack propagation tests up to, at least, 600 °C. The crack length and the crack closure level were determined using the potential drop technique. Thermo-mechanical fatigue crack propagation experiments were performed in-phase and out-of-phase with various R-values on samples of Inconel 718. Cylindrical specimens with a small starter crack were cycled in nominal total strain control. The crack propagation rate was determined and the correlation to the effective J-integral range, ΔJeff, corrected for crack closure presented. The fracture surfaces showed a dominance of trans-granular crack propagation with striations, indicating a low degree of time dependency in the procedure. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1529647
- author
- Jacobsson, Lars LU ; Persson, Christer LU and Melin, Solveig LU
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- in
- International Journal of Fatigue
- volume
- 31
- issue
- 8-9
- pages
- 1318 - 1326
- publisher
- Elsevier
- external identifiers
-
- scopus:67349163729
- wos:000267401900011
- ISSN
- 1879-3452
- DOI
- 10.1016/j.ijfatigue.2009.02.041
- language
- English
- LU publication?
- yes
- id
- 16a10086-5c73-4760-934c-aa21764d8ddd (old id 1529647)
- date added to LUP
- 2016-04-04 08:55:15
- date last changed
- 2022-01-29 07:44:57
@article{16a10086-5c73-4760-934c-aa21764d8ddd, abstract = {{An experimental test facility was developed to perform thermo-mechanical fatigue crack growth experiments. The thermal cycles were generated using hot and cold air flows distributed by a nozzle onto the test specimen. With the equipment it was possible to obtain TMF cycles with cycle times of 120 s with less than 10 °C temperature variation over the measurement length of the sample, cycling between 200 °C and 550 °C. The equipment allows TMF crack propagation tests up to, at least, 600 °C. The crack length and the crack closure level were determined using the potential drop technique. Thermo-mechanical fatigue crack propagation experiments were performed in-phase and out-of-phase with various R-values on samples of Inconel 718. Cylindrical specimens with a small starter crack were cycled in nominal total strain control. The crack propagation rate was determined and the correlation to the effective J-integral range, ΔJeff, corrected for crack closure presented. The fracture surfaces showed a dominance of trans-granular crack propagation with striations, indicating a low degree of time dependency in the procedure.}}, author = {{Jacobsson, Lars and Persson, Christer and Melin, Solveig}}, issn = {{1879-3452}}, language = {{eng}}, number = {{8-9}}, pages = {{1318--1326}}, publisher = {{Elsevier}}, series = {{International Journal of Fatigue}}, title = {{Thermo-mechanical fatigue crack propagation experiments in Inconel 718}}, url = {{http://dx.doi.org/10.1016/j.ijfatigue.2009.02.041}}, doi = {{10.1016/j.ijfatigue.2009.02.041}}, volume = {{31}}, year = {{2009}}, }