Flexible Pipe 1

[JT100]

I’m currently completing a data sheet for a 10” flexible spool, one of the mechanical properties it is asking for is “The damaging force in a straight line”, it also asks for this in a “Bent Configuration (Pull Force vs Radius)”. Now I’m guessing that this is something that the flexible supplier will advise on, however I was wondering if anyone could shed some light on what this is?

 

[narenr]

Probably you are reffering to skin damage resistance during pulling. This is required if the seabed is rough (rock outcrops) and in the J-tube bend.

Narendranath R
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[GRoStruc]

If you mean that it is a flexible the damage force in a straight line is probably just the maximum allowable axial capacity (i.e max tension during lay).

The 'Pull force vs radius' would be the crushing resistance, i.e, maximum axial capacity when running over a radius of X m, like a chute during installation.

Bit late, I guess you'll have got it by now.

 

[rodneybennet]

Realize that the ability of bending (during transport and so on) is strongly influenced by temperature. Especially when the material passes the glass transition temperature, elasticity is reduced to a serious extent. But also plasticized epoxy, polyurethane and other thermoset systems may suffer from this phenomenon. I obtained more information via:

http://www.composite-agency.com/materials-forum.htm