FR2573511A1 - Multi-functional multi-cellular wall - Google Patents

Abstract

Complex wall, generally of high mechanical and thermal strength, made with chosen elements, and essentially comprising longitudinal or transverse housings, constituting cells where compressible or non-compressible elements, or even elastic elements, are introduced finally giving extensibility, non-inflammability, rigidity, mechanical and thermal shock resistance properties.

Description

The invention consists in the use as a basic constituting element of the sought-after assembly, of a wall, homogeneous or heterogeneous, comprising alveoli, and to associate with the specific characteristics of said alveolate wall the complementary and associative properties of elements. specialized inserted into the alveoli.

Figure 1 shows a sectional view of such a wall.

Regarding the basic component, all embodiments by making, welding, assembly, gluing, etc. of all textile materials, metals, glass and counterparts, ceramics and others are reserved. Being especially specified that a way original to realize such constitutive walls of a set consists in the implementation of three-dimensional weaving processes. In all cases the cells can be superimposed or offset with respect to each other, their dimensions determined according to the desired characteristics for the final assembly. Drawing NO 1 represents a superposition of cells, obtained by weaving. The warp threads are wavy, the straight weft threads. The cells are therefore perpendicular to the warp direction. A reverse arrangement can be made: : the cells are then parallel to the chain direction. It is not compulsory
that the weaving is homogeneous and carried out with a single type of thread.

Depending on the overall characteristics sought, we can have,
in both warp and weft directions, several types of thread
judiciously distributed, for example two exterior faces
both in warp a single strand polyester yarn, and in weft a yarn
multi-strand polyester, especially as exterior protection
against UVEt even inside the three-dimensional fabric a
certain number of tablecloths in aramid yarn, aramid woven or
other, for example glass yarn. We will have a superposition of
alveoli, united in a single load-bearing assembly produced in a
single weaving. Finally, the device described above does not require that
that the arrangement of the alveoli is identical and constant while
along the system, it is possible to make segments of
component wall or the arrangement of the alveoli is different, all
chain shots being symmetrically concentrated, so that
be able to have only one housing, perpendicular to the chain direction
said housing being intended to receive connecting devices. If the cells are parallel to the chain direction, hollow edges can be produced, likely to be notably used as a connecting device by alternating insertion of axes or cables in said edges hollow.

The characteristics of the constituent element with cells having been defined above, one can examine the properties likely to be obtained in a set comprising, in addition to the actual support, specialized elements, of adequate shape, inserted in the cells. mechanical resistance will not be alluded to, given the multiplicity of materials available. We will only mention as an indication that a three-dimensional structure in aramid wire reaches 200 T and more resistance per linear meter.

Property NO1.Extensibility: compressible, or even compressible and elastic, elements are introduced into the alveoli. Such as foam, expanded rubber, inflated volume or any construction whose volume is liable to vary under the action of a force or d '' an external agent. This results in a possibility of elongation of the wall which allows it in particular to withstand, or even to annihilate, by the effect of vector decomposition of the forces, forces exceeding its own resistance. Depending on the nature of the elements, wall can remain permanently deformed, ie return to its initial position. And even in cases where the elements are very elastic, a rejection effect towards the backward.

Example 1: Single-strand polyester yarn wall, resistance 20 T or more per linear meter, with cells filled with expanded foam: Figure N 2. The elastic extension of the polyester yarn adds to the crushing effect of the foam .We reach 25/28% elongation. Uses: stop barriers, protective walls, fall arresters, shock absorbers, etc. It is possible to reserve, in whole or in part, certain cells to install devices for liaison or maintenance.

Property N02. Flammability: Non-flammable walls are used as indicated on page 1 lines 20 to 27.0n introduced into the alveoli non-combustible5elastic elements if necessary.

such as non-flammable foam, etc. an aramid wire wall example i) to reach 3500. In example 2 we quote a metal wall (Expanded metal) we reach 4500 with possibilities
short spikes beyond. Similarly (example 3) with layers
exterior in carbon / aramid blend holds 6/700.

To go beyond and increase the life of the wall in
extreme cases, we can share each of the compres
in two half cylinders and install between these two half
cylinders a plate of very high heat resistance: carbon 1500 /
25,000, ceramic 35,000 In the event of simultaneously thermal aggression
and dynamic, there will be an extension of the wall, therefore decomposition
of forces and thermal protection.
located on the side of the aggressed face, will be protected by the face
aramid.lls carbon will be quickly destroyed, but will have when
even had time to crush. The elements located towards the other face,
protected by the P plates will last longer and there will remain a
barrier of overlapping plates, held in place by the construction
If this construction was carried out with a
silica, we can consider a protective facade that can hold 15 /
Similarly, the experiment will make it possible to test the duration of a
ceramic wall (Figure 3)
Applications: Protective wall for Laboratories, workshops, packages
suspicious packages, high temperature air braking, bulletproof wall and
anti-splinter, with possible replacement of all or part of the non-inflammable plates
non-flammable by titanium or other plates, with possibility
blocking by thermal shrinkage. Remember that textile debris
have no cynetic energy, against metallic debris.

Particular case of airplane seats.
combustion fusion of plastic components.
aramid carbon blend fabrics which can be dyed., with a textile glass underlay, all in one weaving or by
superimposition of surfaces with cells, the said cells having to receive non-combustible, non-susceptible elements ...

inflate exaggeratedly by the effect of atmospheric decompression. In addition to safety, we can consider a cost saving,
reduced production, possibility of integrating the seat structure by inserting pins in housings.

 Problems of connections, realized by insertion of axes in certain peripheral housings, being specified that it is possible to carry out assemblies in which the distribution of housings is not constant, but modified in number and endimensions according to the various problems jointly Most often two or three rows of cells, superimposed or offset, will suffice. We can go up to six rows with suitable conventional equipment, and beyond with more complex equipment: 10/12 rows.

Property NO 3.Rigidity. Rigidity elements are inserted into the housings, and in particular components that are difficult to assemble as they are (boron rods, silicon carbide, etc.). Plates can also be used, according to FIG. 3. steel, titanium, aramid felt, etc.

An aramid yarn fabric gives a minimum of 30 T per ML, it can reach 200 T and beyond. Such fabric may possibly have an anti-UV outer face.

Applications: the various properties described above can be combined selectively in a single assembly responding to separate conditions.

Applications: High temperature tanks. All wall gasoline tanks, particularly resistant to high compression, anointed, matt, etc.

Claims (5)

R E V E N D I C A T I O N S. 1O Multipurpose volumetric assemblies, the basic element of which consists of a wall, homogeneous or heterogeneous, comprising cells. 20 assemblies according to claim N0i, the characteristics of which  mechanical and thermal can be considerable, depending on the nature  components used: metal, polyester or other, aramids, glass, siiice  ceramic, carbon, used together or alone. 30 assemblies according to claims I & 2, having properties of  extensibility (and elasticity if necessary) by inserting elements  suitable in the alveoli. 40 sets according to claims 1.2. & 3, with properties of  non-flammability and resistance to high temperatures, due to  the choice of components, with in addition insertion into the cells,  between two half cylinders, flexible or rigid plates, with high  thermal properties. 50 Elements according to the above claims having properties  rigidity due to the insertion into the cells of axes, plates,  bundle of rods, etc with possibility of locking by withdrawal  thermal, coating, impregnation, etc. 60 elements, according to the claims above, consisting of  realization, by selective association of the above properties  of all volumes, walls, joints, masts, elements of safes, etc.