Reduction of mode I fatigue crack growth rate due to occasional mode II loading
2004 (English)In: International Journal of Fatigue, ISSN 0142-1123, E-ISSN 1879-3452, Vol. 26, no 10, 1083-1093 p.Article in journal (Refereed) Published
The effect of mode 11 loading on subsequent mode I crack growth is experimentally investigated on steel AISI 01. The results show that the mode I crack growth rate decreases after a single mode 11 load cycle. This effect remains also after the crack has propagated through the mode 11 plastic zone. The crack growth reduction is shown to be caused by crack closure due to tangential displacement of crack-surface irregularities. The durability of this reduction has a decisive influence on the fatigue life when the mode I R-ratio is not as high as to keep the entire load cycle above the closure level.
Place, publisher, year, edition, pages
2004. Vol. 26, no 10, 1083-1093 p.
crack closure, fatigue crack growth, mode II overloading
IdentifiersURN: urn:nbn:se:kth:diva-8981DOI: 10.1016/j.ijfatigue.2004.03.003ISI: 000223223300006ScopusID: 2-s2.0-3042773344OAI: oai:DiVA.org:kth-8981DiVA: diva2:14503
QC 20101004 QC 201109222006-01-162006-01-162011-09-22Bibliographically approved