These notes were initially written when I taught fracture mechanics in spring 2010. The title of the notes was then "stress intensity factor". In revising the notes for the class in 2014, I have changed the title of the notes to "crack-tip field".
You can access all notes for the course on fracture mechanics.
stress intensity factor
hello sir,
This is kirthan from bangalore. I am getting confused with SIF. How exactly SIF comes handy in analysing crack growth. According to the westergaard equation as θ and r tends to zero stress goes to infinity. And if we substitute any value of stress and crack length with r=0 and θ=0 the value gives infinity.
Books express SIF as the one which charaterises the crack growth in a material. I am not able understand the book meaning for SIF. Can u please help me regarding this.
In reply to stress intensity factor by kirthanlj
Re: stress intensity factor
Your question was answered in the next lecture of the course: toughness.
updated notes on stress intensity factor
I have just updated the notes on stress intensity factor. I find a way to reach the squre-root singularity without solving the boundary-value problem. I invoke two elementary considerations:
The notes assume that you know about the energy release rate taught in previous lectures.
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