Dyneema is extremely tbl091 strong, light, durable, chemically resistant, and highly UV resistant. For long-term static load, so for example a fixed backstay, tbl091 Dyneema is the most suitable material. For a backstay that is taxed and untaxed or alternatingly.
Dyneema is because creep resistance and is therefore less suitable for situations under prolonged static load. Creep is becoming very slowly over the line to eventually tbl091 rupture can occur.
We have just had an example DSM calculate tbl091 for a particular application. A 6mm Dyneema SK 75 line at a temperature of 20 C under a load of 20% of the breaking strength, will eventually after 4.3 years of breaking under the influence of creep. In 14% of the breaking strength is after 10 years. Load at 14% breaking strength 20 C 35 C Dyneema SK75 (6mm) 10 years 2.3 years Dyneema SK78 (6mm) 21 years 4.8 years at 20% tax break strength 20 C 35 C Dyneema SK75 ( 6mm) 4.3 years 0.7 years Dyneema SK78 (6mm) 9.1 years 1.6 years
If you want to use long-term static load, Dyneema for a fixed forestay select at least for Dyneema SK78 because it is more resistant to creep. And so be careful that you should replace your stagnate after a few years, but that is true of all materials including steel wire.
PBO has less creep than Dyneema and is widely used for rigging. Note that PBO not good UV resistant and therefore needs a protective jacket. Also in PBO rigging is recommended to replace them. After 3-5 years
Categories Select Category Deck fittings and hardware (1) Braids (16) Buttons and splitting (8) Materials Science (16) News (21) On Line Specialist (7) Nylon (6) Polyester (6) Polypropylene (2) Vectran (1)
16m2 backstay Alpha Ropes Amsterdam load jib sheet freeze Bootholland cordura deck fittings Delta Lloyd Regatta Design Academy Eindhoven Dutch Design dyneema event organizing tbl091 festivals jib halyard genoa halyard Main halyard shackle Icicle boatbuilders creep Synthetic tbl091 Lamps mooring mooring lines line specialist running rigging mach3 match racing METS motorboat nylon ocean sailing Platu 25 Polyamide Polyester Polypropylene border tbl091 lake Regatta shots sled sloop sloop sloop builders quick release Softshackle banners spinnaker split samples are state building tents tiptolon rope rope rope shop falcon falcons class falling falling steel wire rigging leave vectran tbl091 rejuvenate flag line sports racers racing world X-yachts X41 sailing sailing lines
Cancel
% D bloggers like this:
No comments:
Post a Comment