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rope test 042110(2).wmv

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Uploaded by on Sep 8, 2010

Test to failure of a rope shackle

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Uploader Comments (atlantea43660)

  • It was (as I recall) 5/16" spectra twelve strand and the failure load was very close to the breaking strength of the line.

    You can hear individual strands failing starting at about 1:04, long before the big failure.

    This is because the load is not evenly balanced within the splice. The failure is the inner braid where it enters the knot.

    My explanation:

    The knot weakens the line by 50%

    The inner and outer braid do not share the load equally.

    50% of the load is on each side of the loop.

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  • what was the rope and and what was the failure point?

  • cool

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