Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1995-06-15
1997-08-05
Zirker, Daniel
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
206 3, 428 369, B32B 100
Patent
active
056540531
ABSTRACT:
A structural enclosure, box-like for many embodiments, which effectively contains an explosion, thereupon remaining virtually intact and minimizing fragmentation. The structural wall has a sandwich-like arrangement of two fiber-reinforced matrix material skins and a foam core situated between the two skins, at least one skin having fiber-reinforced high strain-to-failure viscoelastic matrix material. The core foam material selectively varies in density so as to provide appropriate rigidity or flexibility at different locations of the structural enclosure. The fiber-reinforced high strain-to-failure viscoelastic matrix material can be deformed elastically to large strains, has demonstrably high energy-absorbing characteristics, and is relatively lightweight. Upon explosive impact, the inner skin largely deforms so as to be energy-absorbent of the pressure wave caused by the explosive charge, the foam core crushes so as to also be energy-absorbent, the outer skin largely deforms, and both skins contain debris.
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Coffin Paul A.
Crane Roger M.
Kaiser Howard
The United States of America as represented by the Secretary of
Zirker Daniel
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