# Stress intensity factor

1. Oct 18, 2009

### sara_87

1. The problem statement, all variables and given/known data

The stress intensity factor is defined as:

$$\Delta K_1(m,a(m))=\Delta q(m)\sqrt{\pi*a(m)}$$

My question is: is $$\Delta K_1(m,a(m))$$ the same as $$\Delta K_1(m)$$

Because my book says: ''$$\Delta K_1(m)$$ is the mode 1 stress intensity factor'' is that just the same as: $$\Delta K_1(m,a(m))$$

2. Relevant equations

3. The attempt at a solution

2. Oct 18, 2009

### HallsofIvy

Staff Emeritus
That has to depend upon the conventions used by your particular text.