Stock material or miscellaneous articles – Structurally defined web or sheet – Superposed movable attached layers or components
Patent
1975-02-19
1977-12-13
Dier, Philip
Stock material or miscellaneous articles
Structurally defined web or sheet
Superposed movable attached layers or components
428221, 293 71R, 138106, 188 1R, 73 95, B32B 706, B60R 1902, F16D 6300, G01N 308
Patent
active
040629945
ABSTRACT:
Energy-absorption for a composite article is achieved by incorporation in the article of a load-bearing tubular element of ductile material which is bonded to another component of the article, the ductility of the element being such that the element deforms plastically at a part intermediate its ends when subjected to axial tensile stress less than the ultimate tensile strength of the element, the ductile material having deformation characteristics which cause the wall of the said part of the element to contract towards its longitudinal axis, thereby absorbing energy. An inner member may be provided to resist inwards continuation of the tubular element and the tubular element may be situated inside an outer sheath member. The said inner member and/or outer sheath member may be formed to elongate or break before the tubular element in response to the axial tensile stress.
REFERENCES:
patent: 3168114 (1965-02-01), Martin
patent: 3373630 (1968-03-01), Heurtebise
patent: 3432200 (1969-03-01), Barton
patent: 3437367 (1969-04-01), Blank
patent: 3604285 (1971-09-01), Olsson
patent: 3663048 (1972-05-01), Zimmerle
patent: 3721433 (1973-03-01), Sobel
Millman Robert Savile
Morley John Godfrey
Dier Philip
National Research Development Corporation
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