Accession Number : AD0759931

Title :   Evaluation of GRP Rod and Rope Materials and Associated End Fittings.

Descriptive Note : Final rept.,

Corporate Author : NATIONAL BUREAU OF STANDARDS WASHINGTON D C INST FOR BASIC STANDARDS

Personal Author(s) : Halsey,Nixon ; Mitchell,Richard A. ; Mordfin,Leonard

Report Date : DEC 1972

Pagination or Media Count : 88

Abstract : An extensive and varied test program was carried out on FRP/epoxy and FRP/polyester rod and rope materials to evaluate tensile strengths, moduli of elasticity, flexibility at low temperatures, effects of simulated Aeolian vibration, and stress-rupture properties at moderate elevated temperatures both with and without high humidity. The effects of elevated temperature on long-term storage capabilities were investigated, and diameter-temperature relationships were established for avoiding buckling due to storage in a coiled condition. The performances of five commercially available end fittings on these materials were examined in terms of the breaking loads attained in tensile tests. Using finite- element analyses, an improved end fitting was developed. With this end fitting the strength of the fitting-specimen system approaches the true tensile strength of the specimen for two of the FRP materials. An experimental stress analysis of the improved fitting was performed. (Author-PL)

Descriptors :   (*CORDAGE, STRUCTURAL PROPERTIES), TENSILE PROPERTIES, MODULUS OF ELASTICITY, STRESSES, RUPTURE, GLASS, COMPOSITE MATERIALS, FATIGUE(MECHANICS), BUCKLING, FLEXURAL STRENGTH

Subject Categories : Textiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE