A viewpoint on environmental contributions to fatigue crack growth Online publication date: Mon, 09-Apr-2007
by A.K. Vasudevan, K. Sadananda
International Journal of Materials and Product Technology (IJMPT), Vol. 30, No. 1/2/3, 2007
Abstract: Fatigue crack growth behaviour is examined using the Unified Damage Approach developed by the authors since 1994. The approach is based on the understanding that a fatigue damage requires two loading parameters; a requirement manifesting in terms of two fracture mechanics parameters: maximum stress intensity factor Kmax and a stress amplitude ΔK. Kmax governs the breakage of crack tip bonds allowing for crack extension and ΔK controls the extent of cycle damage needed ahead of the crack tip. The overall changes in crack growth depend on several factors like microstructure, deformation mode and its properties and environment. The Unified Damage Approach describes these closely related changes in the damage mechanisms due to synergistic effects of mechanical and environmental driving forces. Crack growth trajectory maps developed using the Unified Damage Approach summarises these changes in mechanisms that occur with increasing crack growth rate or stress intensity.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Materials and Product Technology (IJMPT):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook