Interrupted Stress-Strain Experiments with Nylon 6
Abstract
Samples of nylon 6 were subjected to drawing from a few percent to greater than a hundred percent and allowed to stress relax. This involved elongating the sample to a certain point and then keeping the length constant. When the sample is momentarily held at the peak of the original yield point and then pulled again, a higher-than-original yield peak develops. Subsequent interruptions followed by drawing resulted in the formation of additional yield peaks. In each of these latter cases, the new yield peak is lower than the original. It has been found that any number of yield peaks can be formed as long as any undrawn material still remains and/or as long as the sample is allowed to stress relax. The height of the new yield peak formed is related to the time allowed for stress relaxation. Simple unloading of the sample does not cause the same effect. It is shown that the stress relaxation plays an integral role in the structural rearrangements which lead to the development of additional yield peaks.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1972
- Accession Number
- AD0740650
Entities
People
- Jerome Rubin
Organizations
- Picatinny Arsenal