| Abstract: 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. |
| Filed: 8/9/2010 |
| Application Number: 12/852562 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
| Attribution for Derwent World Patents Index Records published on Sandia ® Clarivate. All rights reserved. Republication or redistribution of Clarivate content, including by framing or similar means, is prohibited without the prior written consent of Clarivate. Clarivate and its logo, as well as all other trademarks used herein are trademarks of their respective owners and used under license. |