Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/4171
Title: Partial crack closure under block loading
Authors: Borrego, L. P. 
Ferreira, J. M. 
Costa, J. M. 
Keywords: Aluminium alloy; Fatigue crack growth; Block loading; Crack closure; Partial crack closure
Issue Date: 2008
Citation: International Journal of Fatigue. 30:10-11 (2008) 1787-1796
Abstract: Fatigue crack propagation tests under high-low and low-high block loading sequences have been performed in aluminium alloy specimens. The tests were carried out at constant [Delta]K conditions. Two stress ratios were analysed: R = 0.05 and R = 0.4. Crack closure was monitored in all tests by the compliance technique using a pin microgauge. The observed transient post load step behaviour is discussed in terms of the load change magnitude, [Delta]K baseline levels and stress ratio. The crack closure level was obtained and compared with the crack growth transients. A good agreement between experimental and predicted crack growth rates is obtained when the partial crack closure effect is properly taken into account. Therefore, plasticity-induced crack closure plays an important role on the load interaction effects observed in aluminium alloys.
URI: http://hdl.handle.net/10316/4171
DOI: 10.1016/j.ijfatigue.2008.02.004
Rights: openAccess
Appears in Collections:FCTUC Eng.Mecânica - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
filee4900801a64f43c49af2f837a78137ea.pdf480.94 kBAdobe PDFView/Open
Show full item record

WEB OF SCIENCETM
Citations

27
checked on Oct 2, 2021

Page view(s) 50

545
checked on Oct 20, 2021

Download(s)

135
checked on Oct 20, 2021

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.