Method for improving the energy absorption of a high tenacity fa

Details Method for improving the energy absorption of a high tenacity fa Method for improving the energy absorption of a high tenacity fa

1995-05-15

1996-12-31

Ryan, Patrick

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Web or sheet containing structurally defined element or...

28299, 28259, 428408, 428911, 2 25, F41H 102, F41H 104

Patent

active

055892540

ABSTRACT:
A method for increasing the energy absorption of a fabric constructed of high tenacity fiber. This method modifies the ballistic stress-deflection curve of the fabric by effectively toughening the fabric by controlling the peak stresses generated in the fabric layer. These stresses are controlled by perforating the fabric into relatively narrow portions or cutting the fabric into relatively narrow strips, preferably along the bias. This unexpected property is counter-intuitive to known expertise in this area in that the weakening of the fabric by cutting or perforating actually improves the ballistic performance.

REFERENCES:
patent: 2771384 (1956-11-01), Collins
patent: 3409907 (1968-11-01), Barratt
patent: 3563836 (1971-02-01), Dunbar
patent: 3829899 (1974-08-01), Davis
patent: 4443506 (1984-04-01), Schmolmann et al.
patent: 4623574 (1986-11-01), Harpell et al.
patent: 5175040 (1992-12-01), Harpell et al.

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