Knot Break Strength vs Rope Break Strength

[Pete Mctree]

Another article-

Knot Break Strength vs. Rope Break Strength

[bob]

good link pete thanks

[High Scale]

Nice one Mr Mctree.

[Pete Mctree]

123 views and only 2 comments............

 

I guess predicting the percentage strength loss in a rope, when knotted is superfluous knowledge

[T14EES T14UNK]

Everyones too busy working out the building properties of snow. But I do see your point. Cheers for the read. I've got nothing else to do at the mo.

[Mozza]

I read threw this earlier, Eased my snowed off boredom, Interesting read

[wiley_p]

123 views and only 2 comments............

 

I guess predicting the percentage strength loss in a rope, when knotted is superfluous knowledge

 

I've been chewing on it some Pete. I'm a bit touched by the numbers in that study and how they are vastly different from many quoted stats here in the US. I thought i was playing safe telling folks that a knot can negate 35% of tensile strength.

I would like to see a test like that done with High Modulus fibers. My own experience has been enlightening.

[simonorourke]

nice. Paolo Bavaresco conducted a few tests on climbing hitches a few years ago. he was telling me some of the knots started smoking and welded themselves to the climbing rope before breaking!

http://www.forestry.gov.uk/pdf/FCRR-JD-0402.pdf/$FILE/FCRR-JD-0402.pdf

[educated arborist]

hmmmmmmmm, would be interseting to know a little more about the ropes used, Paolo's recearch is certainly much more relevent to our industry

[Pete Mctree]

hmmmmmmmm, would be interseting to know a little more about the ropes used, Paolo's recearch is certainly much more relevent to our industry

 

It's not a definitive piece of research. However as an indication of generic rope behavior it is relevant