In a previous article, "Montblack" said:
I read that composites don't show cracks, instead they have weak 'air
pocket' spots that can't be seen during inspections. These pockets of air
bubles(?) are caused by heat/cold to the composite structures over time.

My father, who was the Chief of Non-Metallic Materials at deHavilland
Canada said that this is bunk. Once the composite is made and given the
initial inspection, there is no way in hell they could delaminate like
that.


--
Paul Tomblin http://xcski.com/blogs/pt/
We're the technical experts. We were hired so that management could
ignore our recommendations and tell us how to do our jobs.
-- Mike Andrews