Method and device for tensile testing of cable bundles
A standard tensile test device is improved to accurately measure the mechanical properties of stranded cables, ropes, and other composite structures wherein a witness is attached to the top and bottom mounting blocks holding the cable under test. The witness is comprised of two parts: a top and a bottom rod of similar diameter with the bottom rod having a smaller diameter stem on its upper end and the top rod having a hollow opening in its lower end into which the stem fits forming a witness joint. A small gap is present between the top rod and the larger diameter portion of the bottom rod. A standard extensometer is attached to the top and bottom rods of the witness spanning this small witness gap. When a force is applied to separate the mounting blocks, the gap in the witness expands the same length that the entire test specimen is stretched.
- Research Organization:
- Sandia National Laboratories (SNL) (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- Assignee:
- The United States of America as represented by the Secretary of the Air Force (Washington, DC)
- Patent Number(s):
- 8,286,498
- Application Number:
- 12/852,562
- OSTI ID:
- 1079467
- Country of Publication:
- United States
- Language:
- English
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