Measurements were made of the extension of nylon filaments under conditions of constant load for various lengths of time in air at 65% R.H. and in water. The extent of the recovery which took place after removal of the load was observed, and its dependence upon the magnitude and time of application of load, as well as upon the. immersion medium, was determined. Further recovery which could be effected by treatment with heat or swelling agents was investigated. Limitations in the use of the terms "elastic limit" and "nonrecoverable deformation" when applied to textile fibers are pointed out.
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References
1.
Leaderman, H., "Elastic and Creep Properties of Filamentous Materials and Other High Polymers," Washington, D. C., The Textile Foundation, 1943, chaps. VI and VII.
