:::Jerry:::: wrote:
wrote in message
ups.com...
Hi

I have a strut on a pram that has sheared. It's at a 'springy'
point
but isn't particularly load bearing. snip

So why has it fractured ?....

Because its flexed a lot? I can understand that it takes an amount of
force to flex it, but that isn't (to my mind) the same as it being
under a compressive or tensile load. I'm happy to be corrected on this
if I'm misunderstanding the cause of failure.

Cheers
IanC