Accession Number : ADA194750

Title :   The Dynamic Behavior of Nylon and Polyester Rope under Simulated Towing Conditions.

Descriptive Note : Final rept. Aug 86-May 88,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE

Personal Author(s) : Toomey, Christopher J

PDF Url : ADA194750

Report Date : 06 May 1988

Pagination or Media Count : 104

Abstract : The increasing use of man-made synthetic fiber ropes in the marine environment has generated a need to understand their dynamic mechanical behavior during actual operations. Towing is an operation of primary concern. A method was developed to simulate actual tow conditions with emphasis on constant strain amplitude dynamic loading rather than the more commonly used constant load amplitude dynamic loading. Emphasis was directed towards investigating the change in the dynamic modulus, or stiffness, of the rope when subjected to varying loading conditions, and the change in the hysteresis per cycle of the rope when subjected to varying loading conditions. Finally, measurements were made of the temperature generated during cyclic tensioning and correlations determined between temperature and power input, per cycle. The ropes used were 1/2 inch polyester and nylon rope produced by Samson Ocean Products.

Descriptors :   *DYNAMIC RESPONSE, *NYLON, *POLYESTER PLASTICS, *ROPE, FIBERS, HYSTERESIS, MANMADE, MECHANICAL PROPERTIES, OCEAN ENVIRONMENTS, SIMULATION, STIFFNESS, THESES, TOWING, HIGH STRENGTH

Subject Categories : Plastics
      Textiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE