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1. Adjust Weibull modulus and length of rod using the sliders. 2. Add load until the rod fractures, this will be recorded on the graph. Rectangular cross-section L > 5b,5h b=0.004m h=b L
Weibull modulus, m 3
Length, L 0.4
Number of iterations 
F Run number Fracture load 10 9 8 7 6 5 4 3 2 1
Now press 'Continue' to repeat 7 more times.
Rod survived without fracture!
ln ln(1/s) ln(σmax)
The data from your simulation are shown on the usual Weibull plot:

Drag the boxes at the ends of the line to estimate the gradient, which should be equal to the Weibull modulus.
There are two main sources of error, the location of the fracture is not always at the centre point and force is increased by discrete amounts.

How will this affect the estimate of the strength of the materials?
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