An extensive and varied test program was carried out on four GRP 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 diametertemperature 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 GRP materials. An experimental stress analysis of the improved fitting was performed.

A bank of six JUUUU-ibf-capacity creep testing machines was designed and is being assembled. These machines, which will accommodate 9-ft specimens, are equipped with environmental chambers for stress-rupture tests up to 200°F under saturated humidity conditions.

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Because of the concern for safety in the storage and use of gasoline and other flammable liquids around the home, this study was made to determine if standards can be established to minimize the flammable liquid hazard by controlling or standardizing the containers. Attention was focused on performance standards for stability, leakage, carrying handle strength, and pour spout strength. In general, it was found that the technology involved in existing voluntary standards for safety cans could be applied to flammable liquid containers for home use for all of the above factors except pour spout strength.