Investigation of Shielded and Unshielded Cables.
TEXAS RESEARCH INST INC AUSTIN
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The mechanical properties of shielded and unshielded submarine cables MIL-C-9158E were investigated to determine the effect of shielding on cable life, performance and reliability. Ten cables, five shielded and five unshielded, were selected for laboratory evaluation. A mission profile was developed to establish the mechanical stress limits cables must endure in service and a test sequence designed to measure tensile strength, flexural abrasion endurance, crush resistance, creep under static tension and performance in a hull stuffing tube. The results of this program showed the following DSS-2 cable does not have adequate tensile strength and should have a strength member added. DSS-3 and larger cables have adequate tensile strength with and without the shield Unshielded DSS-3 type cables does not perform satisfactorily in hull stuffing tubes Shielding is not required to meet Mission Profile specifications for cable crush or flexural abrasion resistance Construction parameters other than shielding can significantly affect mechanical performance of cable Unshielded cable construction can result in increased reliability since it permits a thicker single jacket construction and Unshielded cable construction can reduce the cost of cable by 8 to 20. Author
- Machinery and Tools