Hidden damage on a carbon fork stem

Here is a prime example of how non-destructive material testing provides an indication of delamination in the fork steerer and is confirmed after exposure. 

The Carbon Bike Check, company Carl Messtechnik, did the evaluation and based on the diagnostic images we were able to locate and reveal the correct place.  First of all, a longitudinal crack was uncovered, discovered, and in the deeper layers an additional local transverse crack was then formed, with a cavity, indicating a clear manufacturing defect.  

We have now sanded out the area, see pictures, and closed it with fresh laminate again, so that the fork can continue to be used without hesitation.

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