Energy absorption of a high tenacity fabric during a ballistic e

Details Energy absorption of a high tenacity fabric during a ballistic e Energy absorption of a high tenacity fabric during a ballistic e

1992-05-07

1995-11-14

Ryan, Patrick J.

Stock material or miscellaneous articles

Sheet, web, or layer weakened to permit separation through...

428 98, 428113, 428213, 428232, 428246, 428252, 428260, 428280, 428286, 428289, 428290, 4283142, 4283184, 428302, 428911, B32B 304, B32B 326

Patent

active

054665035

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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