WO2019058203A1 - Dispositif de protection contre les impacts - Google Patents

Dispositif de protection contre les impacts Download PDF

Info

Publication number
WO2019058203A1
WO2019058203A1 PCT/IB2018/056845 IB2018056845W WO2019058203A1 WO 2019058203 A1 WO2019058203 A1 WO 2019058203A1 IB 2018056845 W IB2018056845 W IB 2018056845W WO 2019058203 A1 WO2019058203 A1 WO 2019058203A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
pattern
layer
tessellation
fibers
Prior art date
Application number
PCT/IB2018/056845
Other languages
English (en)
Spanish (es)
Inventor
Andres Felipe MONTOYA TOBÓN
Javier Mauricio BETANCUR MUÑOZ
Edgar Alexander OSSA HENAO
Susana María ESTRADA HERNÁNDEZ
Original Assignee
Universidad Eafit
Tecnologías Marte
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universidad Eafit, Tecnologías Marte filed Critical Universidad Eafit
Publication of WO2019058203A1 publication Critical patent/WO2019058203A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer

Definitions

  • the present invention pertains to the field of impact protection devices, such as shielding, industrial or sports protective clothing.
  • WO2015184527A1 relates to methods and systems for increasing the deformability, hardness and impact resistance of different materials.
  • This document discloses two-dimensional surface modifications and three-dimensional arrangements in materials, allowing their deformation, for greater flexibility and impact resistance.
  • the document discloses a biomimetic system consisting of hard protective plates of well defined geometry, of finite sizes and disposed periodically on a soft substrate several orders of magnitude less rigid than the plates. These characteristics increase drilling resistance, bending, tolerance to damage and "multi-hit" (multiple impacts) capabilities.
  • the manufacturing methodology allows the quick and easy implementation of these attributes with a high level of geometric control and repeatability.
  • the document relates only to monolithic materials with a fragile behavior and low fracture toughness (between 0.5 MPa.m 172 and 1.0 MPa.m 172 ) and with a modulus of elasticity between 55GPa and lOOGPa, and does not mention the arrangement of through-cut patterns throughout the material.
  • the document US20110000001A1 refers to a product and a method for implementing a protection system.
  • the invention is a sculpted and interlaced surface, free of tension concentrators comprising: a first part, a second part, a intermediate portion disposed between the first part and the second part, and a base surface.
  • the first part comprises, in turn, a plurality of nodes and a plurality of bas-reliefs.
  • the protective surface is used as armor against incoming ballistic bodies, including ballistic projectiles and ballistic fragments, to provide protection to buildings, equipment and floors, or to become a protective cover for products and objects. This development, however, is not suitable as protective clothing for people, due to its volume and configuration.
  • FIG. l corresponds to a perspective view of an embodiment of the impact protection device, where the external face (6) and the internal face (7) of the sheet (1) are observed; the pattern (3) engraved on the sheet (1) is formed by non-through relief cuts.
  • FIG. 2 corresponds to an exploded view of one embodiment of the protection device, where the sheet (1) is formed by a first layer (4), and a second layer (5). It is observed that the fibers (2) of the first layer (4) are oriented at an angle of 90 ° with respect to the fibers (2) of the second layer (5).
  • FIG. 3 illustrates different types of patterns (3) that the sheet (1) of the impact protection device can have. Said patterns (3) are engraved by means of non-through relief cuts.
  • FIG. 4 illustrates different types of patterns (3) that the blade (1) of the impact protection device can have. Said patterns (3) are recorded by means of discontinuous through cuts.
  • FIG.5 corresponds to a perspective view of an embodiment of the impact protection device where the sheet (1) is observed; the pattern (3) engraved on the sheet (1) is formed by discontinuous through cuts.
  • FIG. 6 corresponds to a perspective view of an embodiment of the impact protection device, where the pattern (3) engraved on the sheet (1) partially covers the surface of the sheet (1).
  • FIG. 7 corresponds to a perspective view of one embodiment of the protection device where two superimposed sheets (1) are observed; where the pattern (3) of engraving of each sheet (1) is different.
  • FIG. 8 corresponds to sectional views of different types of pattern cutting (3) made on a sheet (1).
  • FIG. 9 illustrates multiple types of cut and geometric patterns (3) used in test specimens of the sheet (1) of the impact protection device.
  • FIG. 10 corresponds to a diagram of the three point bending test.
  • FIG. 1 corresponds to a diagram of the dynamic impact test.
  • FIG. 12 corresponds to a diagram where the results obtained in the three-point bending test and the dynamic impact test are summarized in a Cartesian plane.
  • FIG. 13 corresponds to a perspective view of one embodiment of the sheet (1) of the impact protection device.
  • FIG. 14 corresponds to a perspective view of a shoe (12) with a protective jig (13) made with the impact protection device.
  • FIG.15 corresponds to a perspective view of a protective vest (14) made with the impact protection device.
  • FIG.16 corresponds to perspective view of a vehicle door and a piece of vehicle armor made with the impact protection device.
  • the present invention corresponds to an impact protection device comprising a sheet of composite material, with a pattern engraved on one of its faces; said composite material has a modulus of elasticity between 0.8GPa and 250GPa and is formed of fibers arranged in a matrix.
  • the sheet acquires greater flexibility in the engraved areas, providing a flexible shielding that adapts to surfaces with curves and allows the user or the protected element to move easily.
  • the devices of protection against impacts are elements that are used to preserve the physical integrity of multiple devices and users, such as military or civil vehicles, buildings and people, among others, before all types of impacts, from explosions, ballistic impacts, car accidents or beatings received in sports activities.
  • Said impact protection devices have been characterized since ancient times as being rigid pieces, which add weight to the element or protected user, especially if it is intended to repel projectile or landmine impacts, which requires heavy and resistant armoring materials, such as steel.
  • the maneuverability and movement of both vehicles and users is restricted.
  • the present invention corresponds to an impact protection device comprising a sheet (1) of composite material with a modulus of elasticity between 0.8GPa and 250Gpa, which is formed of fibers (2); and a pattern (3) engraved on the sheet (1).
  • the present invention is a device for protection against impacts designed to be used in crash applications, such as ballistic impacts, impacts on sports activities and others.
  • the device of protection against impacts allows to support loads by impacts from low speeds (0 to 2 m / s) to ballistic impacts (of the order of 1500 m / s).
  • the present invention is applicable in protective clothing for the human body, vehicular armoring, aeronautics, among others.
  • the impact protection device comprising a sheet (1) of composite material, the sheet (1) has a pattern (3) engraved on one of its faces; wherein the composite material has a modulus of elasticity between 0.8GPa and 250GPa and is formed of fibers (2) arranged in a matrix.
  • Said engraving forms figures or tessellations covering all or part of one side or both sides of the sheet (1).
  • tiling or tessellation will be understood as a regularity of figures that completely cover a portion or all of a flat surface without spaces remaining or overlapping the figures.
  • Said tiling or tessellation can be regular, semi-irregular or irregular, a regular tiling is formed only of equilateral triangles, squares or regular hexagons.
  • a semiregular tessellation contains two or more regular polygons in its formation and finally an irregular tessellation
  • the sheet (1) comprises two faces, an external face (6) which is the impact face and an internal face (7) that would be facing the surface of the individual or object to be protected.
  • the pattern (3) is on the outer face (6) of the sheet (1), however, the pattern (3) can also be on the inner face (7) or both simultaneously.
  • the figures forming the pattern (3) engraved on the sheet (1) can be any type of geometric figure such as lines, circles, ellipses, polygons and even a combination of different geometric figures.
  • One of the purposes of the pattern (3) is to give the sheet (1) flexibility, allowing it to move or adjust to curved or irregular surfaces, preserving its ability to repel impacts. This is achieved because when recording the pattern (3) the sheet (1) becomes more flexible in the regions where the engraving or cutting was made, while the regions without engraving remain rigid. Therefore, a flexible sheet (1) is obtained, from the combination of rigid regions separated by their flexible perimeter.
  • One of the technical effects produced by the arrangement of geometric figures such as circles, ellipses or polygons to form the pattern (3) in the impact protection device is the distribution of the impact load.
  • the load By exerting a point load or a punctual impact on one of the figures of the external face (6) of the sheet (1), the load is distributed in the total area of the figure, reducing the concentration of stresses in the internal face ( 7) and consequently reducing the possible damage to the object or protected individual.
  • the load or impact exerted on the external face (6) is distributed not only over the area of the impacted figure, but also over the adjacent figures or on the whole of the sheet (1), dissipating over a larger area the energy of the load or of the impact, significantly reducing the damage on the internal face (7) of the sheet (1).
  • the sheet (1) of the impact protection device is formed by a first layer (4) and a second layer (5), which are composed of fibers (2), which can be woven or non-woven.
  • fibers (2) woven when the fibers (2) are interlaced by means of weft and warp and as fibers (2) non-woven when the fibers are in the same or different direction and are united with each other by means of other mechanical, chemical or temperature methods.
  • the first layer (4) and the second layer (5) lying one on the other and the orientation direction of the fibers (2) varies between 0 and 90 ° or between layers.
  • the matrix is a material of continuous character and transmits the efforts to the fibers (2) that are in contact with said matrix.
  • the matrix is polymeric.
  • the sheet (1) can be formed by more than two layers, which preferably have a direction of orientation between the fibers (2) of each layer of 60 °; In this way, an isotropic material is obtained, that is, a material with homogeneous mechanical properties in all directions.
  • a sheet (1) formed by two or more layers with fibers (2) arranged in a different direction between layer and layer will distribute the loads and stresses generated by an impact, in a more homogeneous manner along the area of said layer.
  • sheet (1) which a sheet (1) formed by a single layer.
  • the layers of fibers (2) are agglomerated one on top of the other by means of pressure, temperature, adhesives, equivalent elements that are known to a person of ordinary skill in the art or combinations of the above.
  • the sheet (1) can present between layer and layer depositions of ceramic materials, metal, or any material with a modulus of elasticity different from the material of the sheet (1). These depositions can be made between layer and layer or only on the external face (6) of the outer layer. These depositions achieve a localized increase in the rigidity (modulus of elasticity) of the fibers (2), causing the object that impacts the sheet (1) to deform or fracture, achieving a greater dissipation of energy and finally reducing the impact effect on the inner face (7) of the sheet (1).
  • the pattern (3) of the sheet (1) can be recorded by means of cuts or removal of material.
  • said cut may be through or not, and discontinuous or continuous.
  • said cut will be understood as a non-through cut, that which passes through a section of the sheet (1) without crossing the surface opposite to where the perforation was started; and as a through cut that crosses all the layers of the sheet (1).
  • continuous cutting will be understood when the engraved pattern (3) draws an uninterrupted line on the perimeter of the geometric figure that forms the pattern (3) and as a discontinuous cut when the engraved pattern (3) draws interrupted lines on the perimeter of the pattern. the geometric figure that forms the pattern (3).
  • the sheet (1) of the impact protection device can have different types of patterns (3).
  • Said patterns (3) are engraved by means of non-through relief cuts. These patterns (3) are closed figures that are repeated throughout the piece. These figures can be any type of polygon such as rectangles, squares, rhombuses or triangles; circles or combinations between various geometric figures, as the examples described below: a pattern (3 Al) that forms regular hexagons on the entire outer face (6) of the sheet (1) forming a tessellation.
  • the pattern (3A1) is non-continuous and continuous cutting.
  • the pattern (3A2) is non-continuous and continuous cutting.
  • - a pattern (3A3) that forms horizontal lines on the entire outer face (6) of the sheet (1) forming a tessellation.
  • the pattern (3A3) is non-continuous and continuous cutting.
  • - a pattern (3 A4) that forms squares on the whole of the external face (6) of the sheet (1) forming a tessellation.
  • the pattern (3A4) is non-continuous and continuous cutting.
  • - a pattern (3A5) that forms isosceles triangles on the entire outer face (6) of the sheet (1) forming a tessellation.
  • the pattern (3A5) is non-continuous and continuous cutting.
  • the pattern (3A6) is non-continuous and continuous cutting.
  • the pattern (3A7) is non-continuous and continuous cutting.
  • the pattern (3A8) is non-continuous and continuous.
  • the pattern (3A9) is non-continuous and continuous cutting.
  • the sheet (1) of the impact protection device can have different types of patterns (3). Said patterns (3) are recorded by means of through cuts. These patterns (3) are repeated throughout the piece and follow the perimeter of geometric figures that can be polygons (such as rectangles, squares, rhombuses or triangles); circles or combinations between various geometric figures, such as those described below:
  • - a pattern (3B 1) that forms regular hexagons on the entire outer face (6) of the sheet (1) forming a tessellation.
  • the pattern (3B 1) is through-cut and discontinuous.
  • - a pattern (3B2) that forms irregular hexagons on the entire outer face (6) of the sheet (1) forming a tessellation.
  • the pattern (3B2) is cut and discontinuous.
  • the pattern (3B3) is through-cut and discontinuous.
  • the pattern (3B4) is through-cut and discontinuous.
  • - a pattern (3B5) that forms isosceles triangles on the entire outer face (6) of the sheet (1) forming a tessellation.
  • the pattern (3B5) is through-cut and discontinuous.
  • - a pattern (3B6) that forms intersecting circles on the entire outer face (6) of the sheet (1) forming a tessellation.
  • the pattern (3B6) is through-cut and discontinuous.
  • the pattern (3B7) is through-cut and discontinuous.
  • the pattern (3B8) is through-cut and discontinuous.
  • the pattern (3B9) is through-cut and discontinuous.
  • an engraving pattern (3B 10) forming six-sided polygons, which form a figure similar to an inverted "v" over the entire outer face (6) of the sheet (1) forming a tessellation.
  • the pattern (3B 10) is through-cut and discontinuous.
  • the pattern (3) engraved on the sheet (1) is of a continuous and discontinuous cut. These cuts follow sections or segments of the perimeter of a tessellation, these cuts can be located in the vertices of the geometric figures described by the engraving, on the sides of the geometric figures described by the engraving, without touching the vertices of said figures, or There may be a combination of both.
  • the sheet (1) has a pattern (3) that covers a partiality of the surface of the sheet (1), this pattern can cover between 0.1% and 100% of the surface of the sheet (1). the sheet, can cover 100% of the surface or not cover 100% of the surface.
  • the part not covered by the pattern (3) is more resistant but more rigid and the part covered by the pattern (3) is less resistant but more flexible. Having a combination of sections of sheet (1) with pattern (3) and without pattern (3) allows greater flexibility of the sheet (1) in certain points and greater strength in other areas.
  • the sheet (1) has different compositions of materials in partial sections of the surface area of the sheet, due to coatings.
  • the sheet (1) may have a metallic or ceramic coating to increase the stiffness in the area where the pattern (3) is recorded.
  • the coating increases the rigidity within the figures and simultaneously the cuts increase the overall flexibility of the sheet (1).
  • FIG. 7 there are two sheets (1) engraved superimposed, where the pattern (3) of the first sheet (1) is different from the pattern (3) of the second sheet (1). The technical effect obtained by using more than one sheet (1) is the increase in strength.
  • the immediately adjacent second sheet (1) will help support the impact received by the outer face (6) of the first sheet (1), functioning as a second protective layer against impact.
  • two sheets (1) can have the same pattern (3) with a lag between the patterns (3) of each sheet.
  • Two sheets (1) of the same pattern (3) can also be used with different types of cuts, through and through, continuous and discontinuous; or sheets (1) with different patterns (3) and different types of cut, through and not through and continuous or discontinuous.
  • the design of the sheet (1) prevents that this impact penetrates, be it ballistic or slower.
  • the design of the sheet (1) allows the impact to pass through the device of protection against impacts, in order that the user who is covered by this, can defend himself from inside.
  • the cut by means of which the pattern (3) is engraved can have different profiles through different manufacturing processes such as fiber cutting or displacement, such as laser cutting, water jet cutting. , embossing, stamping or stamping, among others. Additionally said cut may have an engraving channel angle (a) of the pattern (3) with respect to the surface of the sheet (1), which is between I o and 179 °.
  • fiber cutting or displacement such as laser cutting, water jet cutting.
  • embossing, stamping or stamping among others.
  • said cut may have an engraving channel angle (a) of the pattern (3) with respect to the surface of the sheet (1), which is between I o and 179 °.
  • laminates (1) were fabricated for testing, with UHMWPE (Ultra High Molecular Weight Polyethylene) fibers, non-woven and laser-cut, which present a Young's modulus between 0.9GPa to IGPa.
  • UHMWPE Ultra High Molecular Weight Polyethylene
  • the specimens were made in pairs, where each pair has the same pattern (3), but different pattern orientation (3), rotating 90 ° between the pair. Some of these pairs of specimens are described below: In specimen D16V, there is a pattern (3) of irregular hexagons (slender) in the vertical direction of the specimen, whereas in specimen DI 6H the same pattern is observed ( 3) of hexagons but oriented in the horizontal direction.
  • the specimen D16V has greater flexibility in the horizontal axis and the specimen D16H is more flexible in the vertical axis, while in the specimens D17V and D17H, where the pattern (3) presents regular hexagons, the flexibility is similar in both directions.
  • the specimens D19V and D19H present a pattern (3) of regular hexagons engraved with through and discontinuous cuts, where the cuts are only located in the sections of the vertices of the hexagons.
  • the specimens D20V and D20H they have a pattern (3) also formed by irregular hexagons, it is recorded by means of intermittent and discontinuous cuts that are made in the central section of the sides of the hexagons and not in the vertices.
  • the specimens D19V, D19H, D20V and D20H have a flexibility similar to that of test pieces D17V and D17H.
  • the specimens such as D13V, D13H, D21V and D21H have a pattern (3) of parallel lines and grid respectively, which have different flexibilities according to their orientation.
  • the specimens D14V and D14H have a pattern (3) of irregular hexagons engraved with through and discontinuous cuts, where the cuts are only located in the sections of the vertices of the hexagons.
  • the specimens D15V and D15H have a pattern (3) also formed by irregular hexagons, is engraved by means of intermittent and discontinuous cuts that are made in the central section of the sides of the hexagons and not in the vertices.
  • the specimens D14V, D14H, D15V and D15H have a flexibility similar to that of test pieces D16V and D16H in their respective orientation.
  • the specimens D18V and D18H have a pattern (3) that describes equilateral triangles arranged in a tessellation matrix that covers the entire surface, just as group D16V and D16H are oriented in different directions.
  • the test pieces were oriented in different directions since a hypothesis was established where it was established that according to the orientation of the cutting engravings a greater flexibility would be obtained in the vertical axis or in the horizontal axis.
  • the different specimens were subjected to 2 different types of tests: a three-point bending test and a dynamic impact test.
  • the test specimens for the flexural test are rectangular, 120mm long and 50mm wide, and the dynamic impact test specimens are circular specimens of 100 mm diameter. The thickness of all the specimens is approximately 2mm.
  • a three-point bending test was performed, where the rectangular specimens are supported near the ends of their longer side by their internal face (7), and are subjected to a constant load in the center of the specimen on the external face (6).
  • This test allows to know values of load, energy and deflection of the test tube and therefore the stiffness and the Young's modulus can be calculated by knowing the geometry of the specimens. These values can be tabulated or plotted on a Cartesian plane. This information is directly related to the flexibility that each particular specimen has and allows to know within the pairs of specimens which pattern orientation (3) of engraving allows more flexibility. Understanding as greater flexibility a positive attribute for the invention.
  • a dynamic impact test was carried out, where the circular specimens are fixed by their perimeter and are impacted at a speed determined by an impact element on their external face (6).
  • This test allows to know values of load, energy and deflection, being especially important the values of energy that can support each one of the test pieces.
  • the values obtained by the test can be tabulated or plotted on a Cartesian plane.
  • FIG.12. a Cartesian plan was elaborated which summarizes the results obtained in the tests of flexion at three points and dynamic impact. In this Cartesian plane it is described what is the energy absorbed during the impact test and what is the flexibility calculated from the bending test as the inverse of the stiffness from the three point bending test.
  • the control group (8) is composed of the control specimens, these are not illustrated and their dimensions are equal to those of the specimens illustrated and described, however, they have no pattern (3) recorded. According to the results of the tests, the control specimens are those that have less flexibility, but have the greatest amount of energy absorbed.
  • the group of squares and triangles (9) is composed of test pieces D13V, D13H, D18V, D18H, D21V and D21H.
  • the patterns (3) of these specimens increase The flexibility of the specimen is reduced, in some cases to twice the value of the flexibility of the specimens of the control group (8), however, there is a significant decrease in the energy absorbed by the specimens.
  • the group of irregular hexagons (10) is composed of test pieces D14V, D14H, D15V, D15H, D16V and D16H. This group of specimens are superior in flexibility compared to the control group (8) and the group of squares and triangles (9), but there is a significant reduction in the energy absorbed.
  • the group of regular hexagons (11) consists of test pieces D17V, D17H, D19V, D19H, D20V and D20H.
  • the control group (8) there is a decrease of about 10% in the energy absorbed by the test pieces, but there is a 360% increase in flexibility, which is directly related to flexibility. This is the reason why this last group is the most outstanding geometry to be used in the invention.
  • Example 1 Referring to FIG.13, a 30cm by 30cm sheet (1) was made, composed of 12 sheets of composite material, where each sheet was composed of 4 layers of ultra high molecular weight unidirectional polyethylene fibers (UHMWPE) by its abbreviations in English), consolidated among themselves by a matrix of natural rubber through a pressing process (pressure: 2700psi and temperature: 125 ° C). A sheet about 2.4 mm thick was obtained. The angle formed between the fibers was 90 ° between layer and layer.
  • UHMWPE ultra high molecular weight unidirectional polyethylene fibers
  • a pattern (3) was engraved by means of a non-continuous and continuous cut that was made with a laser cutter, achieving a depth cut of approximately one third of the depth of the sheet.
  • the geometry described by the cut was a pattern (3) of regular hexagons parameterized on one side of 2cm and the angle (a) of the cut profile was approximately 90 ° with respect to the external face (6) of the sheet.
  • a jig (13) for protection against detonation of antipersonnel mines was made, which was composed of a sheet (1) shaped in the same way as that described in example 1 with a pattern (3) that describes parallel lines, perpendicular to the greater length of the template, and located in the area under the toes, to improve the flexibility of the sheet (1) in that area.
  • the insole has towards its internal face an extra layer of recovered leather, which was attached to the sheet (1) during the pressing.
  • the template (13) can be used inside a shoe or boot for civilian use, as well as inside a military boot.
  • a protection vest (14) was made against 9mm ammunition impacts, which was composed of two vest sheets (15 and 16) shaped in the same way as that described in example 1, with the difference that each sheet (15 and 16) was composed of eight sheets of unidirectional fibers of UHMWPE, and each sheet was composed of four layers of fibers oriented at 90 ° between layers. Additionally, the pattern (3) of the first sheet of the vest (15) described a geometry of irregular hexagons, oriented in different directions, according to the need of the area to be protected, and the pattern of the second sheet of the vest (16) described segments of circles (not shown), where the pattern (3) did not cover the entire surface of the sheet. In addition to the vest sheets (15 and 16), the vest was additionally composed of three unpressed sheets (17) of a unidirectional UHMWPE composite material, where each sheet was composed of four layers of fibers oriented at 90 ° between layer and layer.
  • the protective vest (14) in its entirety was covered by a fabric composed of polyamide fibers, which constituted the outer cover of the protective vest (14), not illustrated in the figure.
  • a vehicle armor piece was made which was composed of a sheet (1) similar to that described in example 1, with the difference that it was made from 82 sheets of material, which were each formed by four layers of unidirectional fibers of UHMWPE, oriented at 90 ° between layer and layer and consolidated by means of a pressing process in a thermoplastic polyurethane matrix.
  • the armor piece was adapted to the door of a vehicle, and the pattern (3) consisted of parallel lines along the area where the vehicle door has a curvature. In this way the engraved pattern (3) covered only a percentage of the total area of the sheet (1).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un dispositif de protection contre les impacts qui comprend une feuille de matériau composite avec un patron gravé sur une de ses faces ; lequel matériau composite présente un module d'élasticité situé entre 0,8GPa et 250GPa et est formé de fibres placées dans une matrice polymère. Le patron confère à la feuille une plus grande flexibilité dans les zones gravées, offrant ainsi un blindage flexible qui s'adapte à des surfaces présentant des courbes et qui permet à l'utilisateur ou à l'élément protégé de se mouvoir facilement.
PCT/IB2018/056845 2017-09-22 2018-09-07 Dispositif de protection contre les impacts WO2019058203A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CONC2017/0009647 2017-09-22
CONC2017/0009647A CO2017009647A1 (es) 2017-09-22 2017-09-22 Dispositivo de protección contra impactos

Publications (1)

Publication Number Publication Date
WO2019058203A1 true WO2019058203A1 (fr) 2019-03-28

Family

ID=65811176

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2018/056845 WO2019058203A1 (fr) 2017-09-22 2018-09-07 Dispositif de protection contre les impacts

Country Status (2)

Country Link
CO (1) CO2017009647A1 (fr)
WO (1) WO2019058203A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070172677A1 (en) * 2003-04-28 2007-07-26 Biermann Paul J Impact resistant flexible body device
WO2008048301A2 (fr) * 2005-12-06 2008-04-24 Honeywell International Inc. Matériau flexible résistant à la projection d'éclats et aux coups de poignard à effet traumatisant réduit
US20120196108A1 (en) * 2006-09-12 2012-08-02 Honeywell Internation Inc. High performance ballistic composites having improved flexibility and method of making the same
WO2017019144A1 (fr) * 2015-07-27 2017-02-02 Rocky Research Article balistique composite multi-couches

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070172677A1 (en) * 2003-04-28 2007-07-26 Biermann Paul J Impact resistant flexible body device
WO2008048301A2 (fr) * 2005-12-06 2008-04-24 Honeywell International Inc. Matériau flexible résistant à la projection d'éclats et aux coups de poignard à effet traumatisant réduit
US20120196108A1 (en) * 2006-09-12 2012-08-02 Honeywell Internation Inc. High performance ballistic composites having improved flexibility and method of making the same
WO2017019144A1 (fr) * 2015-07-27 2017-02-02 Rocky Research Article balistique composite multi-couches

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
MARTINI, ROBERTO: "Stretch-and-release fabrication, testing and optimization of a flexible ceramic armor inspired from fish scales", BIOINSPIRATION & BIOMIMETICS, vol. 11, no. 6, 13 October 2016 (2016-10-13), pages 1748 - 3190, XP055584471, ISSN: 1748-3190, Retrieved from the Internet <URL:https://barthelat-lab.mcgill.ca/files/papers/BB2016.pdf> [retrieved on 20181113], DOI: 10.1088/1748-3190/11/6/066001 *
MURCIA, SANDRA: "The natural armors of fish: A comparison of the lamination pattern and structure of scales", JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS, vol. 73, no. 2017, 20 September 2016 (2016-09-20), pages 17 - 27, XP085116378, Retrieved from the Internet <URL:https://reader. elsevier .com/ reader/sd/pii/S1751616116303320?token=8FB2B2872F22B 3F18B7COEBF4DF09323A61137C46D33A8 EE 579572AC4F 989 BE 05821F499A8D5784C1468F955825C236B> [retrieved on 20181113], DOI: doi:10.1016/j.jmbbm.2016.09.025 *
RAVI, K. CHINTAPALLI ET AL.: "Fabrication, testing and modeling of a new flexible armor inspired from natural fish scales and osteoderms", BIOINSPIRATION & BIOMIMETICS, vol. 9, no. 3, 11 March 2014 (2014-03-11), pages 1 - 9, XP020270093, Retrieved from the Internet <URL:https://barthelat-lab.mcgill.ca/files/papers/BB2014.pdf> [retrieved on 20181113] *

Also Published As

Publication number Publication date
CO2017009647A1 (es) 2019-04-30

Similar Documents

Publication Publication Date Title
US7698984B2 (en) Ballistic projectile resistant barrier apparatus
EP3456216A1 (fr) Insert de casque
US20150125663A1 (en) Helmet designs utilizing foam structures having graded properties
US5824940A (en) Ceramic bullet-proof fabric
ES2550320T3 (es) Estructura de multicapa mejorada para protección balística
US20080307553A1 (en) Method And Apparatus For Protecting Against Ballistic Projectiles
US9874425B2 (en) Asymmetric body armor
ATE311776T1 (de) Stossaufnehmender körperschutz
US4633528A (en) Bullet affecting/deflecting material
EP2245415B1 (fr) Séparation de protection et procédé de protection
ITUB20151170A1 (it) Struttura di protezione antiproiettile e corrispondente giubbotto antiproiettile
GB2573810A (en) Protective Shield And Shield Wall
ES2660478T3 (es) Protección balística con estructura de capas múltiples que incluye una pluralidad de elementos rígidos
WO2016094285A1 (fr) Blindage, boucliers et casques ayant des matériaux d&#39;interface ayant des propriétés hautement inégales afin de réduire la force et les dommages dynamiques
WO2017081693A1 (fr) Matériaux souples résistant à l&#39;impact, articles les comprenant et leurs utilisations
KR101014407B1 (ko) 비늘형 세라믹 타일을 적용한 하이브리드 개인용 방탄복
US20150377593A1 (en) Armour
US9021612B1 (en) Asymmetric body armor
WO2019058203A1 (fr) Dispositif de protection contre les impacts
GB2232063A (en) Projectile resistant shield for protective garments
AT410142B (de) Einrichtung zum schutz von körperteilen vor eindringenden gegenständen
KR101229550B1 (ko) 방탄복용 직물적층구조
US9228806B2 (en) Protective armor panels
WO2004099705A1 (fr) Armure composite anti-balistique et procede associe
US20080193693A1 (en) Anti-stab and antiballistic foraminous structures

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18858523

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18858523

Country of ref document: EP

Kind code of ref document: A1