kamilw Mar 6, 2011:

This link might support meirs's answer to another question, gebruiksfactor = loading factor...

Barend van Zadelhoff Mar 6, 2011:

if textile is also nylon this link perhaps adds something:

http://www.nylon-slings.com/HTML/glossary.html

kamilw Mar 6, 2011:

Haha... Michael, I didn't notice you both asked the question and made the 1st discussion entry! :)

Michael Beijer (asker) Mar 6, 2011:

-> I think I like "break test", (in full: "tensile strength break test"), which I have found e.g. in the "Hanes Riggers Handbook", here: http://www.scribd.com/doc/26962914/This-Rigger’s-Handbook-is... E.g., "Capacity: 225 ton maximum pull test and 200 ton maximum BREAK TEST. Now available up to 3 Million pounds." + "BREAK TESTING of slings shall be as above with results documented. Pin size for BREAK TESTING should be a diameter equal to half the sling width, or larger." + "c. Another guide for determining discard time is when the rope has a residual strength of 50% of its original new rope strength. This can be determined through laboratory TENSILE STRENGTH BREAK TESTS. This can be done by Hanes Supply. If utilities wish to perform their own tests, they should contact Hanes Supply to coordinate testing procedure, methods and apparatus. Hanes Supply has instructions on technical procedures for testing braided synthetic ropes." /// "Breaking strength test" is of course also correct, it seems.

Barend van Zadelhoff Mar 6, 2011:

definitions of 'breaking strength' I think Kamil is on the right track
Have a look at the definitons for 'breaking strength':

http://www.google.nl/search?hl=nl&lr=&as_qdr=all&defl=en&q=d...

kamilw Mar 5, 2011:

Or "breaking strength test":
"Split Drum Grips to be used in the Webbing Breaking Strength Tests"
http://www.tc.gc.ca/eng/roadsafety/safevehicles-mvstm_tsd-tm...

"Each sample was tensioned three times to half its breaking strength to remove construction slippage before being tensioned to break."
http://www.chockstone.org/Forum/Forum.asp?Action=DisplayTopi...

"Breaking Strength Test:
Measures fabric's ability to resist tearing or breaking when subjected to tension. "
http://www.scribd.com/doc/35706417/Quality-Standards-Textile...

P.S. Looks like both are commonly used - Michael, you've got priority to give it as an official answer :)

Michael Beijer (asker) Mar 5, 2011:

I think I found it: "break test"" "To provide some detailed analysis of the strength rétention of used slings, and to give the dealers a background on the safety of used slings in the field, we have undertaken this study. The comfort level a dealer may feel after reading this report should not reduce or eliminate the dealer's efforts to have customers return slings for repair évaluation. When indicators (cover, Fiber Optie, Tell-tails) show the sling should be removed from service, the customer must be trained to take appropriate action.

In laboratory conditions, two distinctive test programs have shown that new K-Spec™ high performance fiber used in the construction of Twin-Path® Extra slings shows no détérioration from fiber on fiber abrasion or fatigue.

The first test program was conducted in 1997 at the laboratories of Tension Member Technology in Huntington Beach, CA. This test exposed both Kevlar® and K-Spec™ fiber to a cyclic-tension-testing program consisting of pulling each sling 50,000 times to a 50% overload and then performing a ***break test*** on the designated slings." (see: http://www.slingmax.com/)