THE STRONGEST NAME IN ROPE Bending Fatigue Enhancement of Synthetic Fiber Rope SAMSON Danielle Stenvers, Justin Gilmore, Rafael Chou W.L. GORE & Associates, Inc. Robert Sassa, Jeff Leiser, Mike Altman, Gary Harp Presented by Jon Miller Samson Rope Technologies
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THE STRONGEST NAME IN ROPE
Bending Fatigue Enhancement of Synthetic Fiber Rope
SAMSONDanielle Stenvers, Justin Gilmore, Rafael Chou
W.L. GORE & Associates, Inc.Robert Sassa, Jeff Leiser, Mike Altman, Gary Harp
Presented by Jon MillerSamson Rope Technologies
THE STRONGEST NAME IN ROPE
PRESENTATION OVERVIEW
Samson Rope Technologies Specific application where bending fatigue is importantPerformance requirements of ropesBending fatigue resistance – testing – improvement
Other considerationsConclusionsFuture work
THE STRONGEST NAME IN ROPE
Founded in 1878, Samson still holds the oldest active RegisteredTrade Mark in the United States
Headquartered in Ferndale, Washington with manufacturing facilities in Ferndale and Lafayette, Louisiana
Largest manufacturer of high performance synthetic rope in NorthAmerica with a full range of products and services
Over 250 employees serving 1,000 customers in more than 25 countries with 250 products
Privately owned by WIND RIVER HOLDINGS
WHO IS SAMSON?
THE STRONGEST NAME IN ROPE
OUR MISSION STATEMENT
Samson is the leading high performance cordage company. Our competitive advantage is to differentiate ourselves by providinghigh performance cordage solutions to critical customer problems.
The competitive advantage is delivered through a combination of application engineering, critical technical capabilities (fibers, coatings, and constructions) and focused technical sales efforts in targeted growth markets.
Products are marketed under the Samson brand as the symbol for high performance, supported by superior customer service and emphasizing the company’s service and quality programs.
THE STRONGEST NAME IN ROPE
The Most Advanced Research and Development in the Industry
PhD
Engineers:
Chemical
Mechanical
OUR CAPABILITIES
THE STRONGEST NAME IN ROPE
The Most Advanced Rope Testing Machine, Capable of Breaking Rope in Excess of 1.1 Million Lbs.
OUR CAPABILITIES …cont’d
THE STRONGEST NAME IN ROPE
Drop Test Tower12 1/2' Drop Length280 kg max drop weight
OUR CAPABILITIES …cont’d
THE STRONGEST NAME IN ROPE
APPLICATION OVERVIEW
Well head on ocean sea floorBecause of extreme depths, wire is no longer an option because of breaking lengthSwells at surface require motion compensation during installation.
SYNTHETIC ROPE OPPORTUNITY
THE STRONGEST NAME IN ROPE
APPLICATION OVERVIEW …cont’d
Installation of Subsea TreesInstallation vessel
Ahv photo here
THE STRONGEST NAME IN ROPE
DESIRED PROPERTIES
StiffnessTension control Abrasion and cuttingTension-tension fatigueBending fatigue resistance
THE STRONGEST NAME IN ROPE
BENDING FATIGUE RESISTANCE ENHANCEMENT
Literature ReviewLife factor discussion– Definition– Dominant factors
Testing equipment and samplesCoating formulation Fiber selection
THE STRONGEST NAME IN ROPE
LIFE FACTOR IN LITERATURE
References1) Handbook of Oceanographic Winch, Wire and Cable Technology
3rd Edition. Funded by NSF and developed for US Navy. Edited by John F. Bash• Aramid rope shows good properties with large sheave diameters • Wire rope cycles from 10^4 to 10^5 with large sheave diameters
2) Improving Bend-over-Sheave Fatigue in Fiber RopesOceans 2003 F. Sloan, R. Nye, and T. Liggett
• BOB shows 7.3 times improvement over 100% HMPE with Polyurethane coating