US3722355A - Lightweight armor material - Google Patents
Lightweight armor material Download PDFInfo
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- US3722355A US3722355A US3722355DA US3722355A US 3722355 A US3722355 A US 3722355A US 3722355D A US3722355D A US 3722355DA US 3722355 A US3722355 A US 3722355A
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- woven fabric
- glass
- fibers
- nylon fibers
- layers
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- 239000000463 material Substances 0.000 title claims abstract description 51
- 229920001778 nylon Polymers 0.000 claims abstract description 60
- 239000002759 woven fabric Substances 0.000 claims abstract description 56
- 239000003365 glass fiber Substances 0.000 claims abstract description 34
- 239000011521 glass Substances 0.000 claims abstract description 33
- 230000035515 penetration Effects 0.000 claims abstract description 20
- 239000002245 particle Substances 0.000 claims abstract description 16
- 239000011347 resin Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims description 45
- 239000002344 surface layer Substances 0.000 claims description 21
- 239000004744 fabric Substances 0.000 claims description 19
- 230000032798 delamination Effects 0.000 claims description 14
- 239000004677 Nylon Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000002657 fibrous material Substances 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229910052580 B4C Inorganic materials 0.000 claims description 2
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000012260 resinous material Substances 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 4
- 239000012634 fragment Substances 0.000 abstract description 4
- 229910010293 ceramic material Inorganic materials 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- 235000019589 hardness Nutrition 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000013305 flexible fiber Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
Images
Classifications
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- 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
- F41H5/0414—Layered armour containing ceramic material
- F41H5/0428—Ceramic layers in combination with additional layers made of fibres, fabrics or plastics
- F41H5/0435—Ceramic layers in combination with additional layers made of fibres, fabrics or plastics the additional layers being only fibre- or fabric-reinforced layers
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/24—Resistant to mechanical stress, e.g. pierce-proof
- A41D31/245—Resistant to mechanical stress, e.g. pierce-proof using layered materials
-
- 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
- F41H1/00—Personal protection gear
- F41H1/02—Armoured or projectile- or missile-resistant garments; Composite protection fabrics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/911—Penetration resistant layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/30—Woven fabric [i.e., woven strand or strip material]
- Y10T442/3179—Woven fabric is characterized by a particular or differential weave other than fabric in which the strand denier or warp/weft pick count is specified
- Y10T442/322—Warp differs from weft
- Y10T442/3228—Materials differ
- Y10T442/3236—Including inorganic strand material
- Y10T442/3252—Including synthetic polymeric strand material
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Laminated Bodies (AREA)
Abstract
This disclosure concerns a lightweight armor material which includes a woven fabric of glass and nylon fibers, wherein the individual glass fibers are interlaced with individual nylon fibers so as to provide an interwoven relationship between the glass fibers and the nylon fibers. A woven fabric of this character is especially suitable for use in body armor and may be employed in multiple layers arranged in superposed relation, either with or without a binding resin, to provide a structural material affording protection against a high energy particle, such as a projectile or fragments therefrom. The structural material has a high resistance to the penetration of a high energy particle in relation to its weight which is superior to the penetration resistance of a comparable structure of the same weight but including woven fabric layers of either glass fibers or nylon fibers alone. A hard outer surface plate of a ceramic material may be included as a component of the structural material in one embodiment thereof, enabling the structural material to successfully withstand the direct impact of certain types of projectiles thereagainst by preventing the penetration of these projectiles and thereby protecting personnel from injury and/or equipment from damage.
Description
United States Patent [191 King [54] LIGHTWEIGHT ARMOR MATERIAL [75] Inventor: Harry A. King, Covina, Calif.
[73] Assignee: Aerojet-General Corporation, El
Monte, Calif.
[22] Filed: Aug. 3, 1965 [21] Appl. No.: 477,671
[56] References Cited UNITED STATES PATENTS 2,477,407 7/1949 Grant et a1. 161/93 Primary Examiner-Stephen C. Bentley Attorney-Edward O. Ansell, D. Gordon Angus and William E. Hiller I [57] I ABSTRACT This disclosure concerns a lightweight armor material [111 3,722,355 [451 Mar. 27, 1973 which includes a woven fabric of glass and nylon fibers, wherein the individual glass fibers are interlaced with individual nylon fibers so as to provide an interwoven relationship between the glass fibers and the nylon fibers. A woven fabric of this character is especially suitable for use in body armor and may be employed in multiple layers arranged in superposed relation, either with or without a binding resin, to provide a structural material affording protection against a high energy particle, such as a projectile or fragments therefrom. The structural material has a high resistance to the penetration of a high energy particle in relation to its weight which is superior to the penetration resistance of a comparable structure of the same weight but including woven fabric layers of either glass fibers or nylon fibers alone. A hard outer surface plate of a ceramic material may be included as a component of the structural material in one embodiment thereof, enabling the structural material to successfully withstand the direct impact of certain types of projectiles thereagainst by preventing the penetration of these projectiles and thereby protecting personnel from injury and/or equipment from damage.
7 Claims, 5 Drawing Figures PATENTEUHARZYISH 722,355
SHEET 2 [IF 2 F 5 INVENTOR HARRY A. KING BY M@.M
ATTORNEYS LIGHTWEIGHT ARMOR MATERIAL This invention relates to a non-metallic armor material formed to provide exceptional impact resistance, thereby affording an exceptional penetration resistance-to-weight ratio.
The present invention contemplates the provision of armor plate formed of the novel material which, however, may be utilized for other purposes. The following description of the application of the material to the production of armor is given by way of illustration only.
Body armor has previously been formed of reinforced plastic materials, such as low pressure glasspolyester laminates. Such armor, however, is subject to delamination about the area of missile impact with consequent reduction in strength of the armor, and in effectiveness in case of a second impact.
It is therefore anobject of this invention to provide a composite material suitable for use as armor which is more efficient on a weight basis in stopping high velocity fragmentation projectiles or ogive shaped projectiles, than any of the individual materials of which it is composed, or any other material generally accepted for this use.
Another object of this invention is to provide a nonmetallic laminated material suited for use both as body armor and for armor purposes in aircraft, personnel carriers and the like.
Still further objects of the present invention will become more fully apparent as the description proceeds when taken in connection with the accompanying drawings, in which:
FIG. 1 is a greatly-enlarged plan view of a woven fabric comprising a lightweight armor material and in cluding interlaced glass and nylon fibers in accordance with the present invention;
FIG. 2 is a sectional view of a laminated armor member including a plurality of layers of woven fabric of the type illustrated in FIG. 1 impregnated with a resin and bonded together into a composite laminate structure;
FIG. 3 is-a perspective view of body armor made of woven fabric of the type illustrated in FIG. 1;
FIG. 4 is a perspective view, partially broken away, showing a laminated armor member having a hard outer surface plate asa component thereof I in accordance with the present invention; and
FIG. 5 is a sectional view taken along the line 5-5 of FIG. 4.
A great deal of time and effort has been expended on the development and determination of the lightest weight armor for use against fragmentation type projectiles. One of the most widely used and successful to date is Doron or Doron II, a laminate composed of unidirectional glass fabric such as. 143 cloth and a polyester resin in a fairly low concentration. Notably higher weights than for Doron are required to stop the same projectile under the same conditions with nylon fabric, either bonded or unbonded; steel; aluminum; or titanium armor alloy, as will be shown hereinafter.
I have found that by interweaving glass and nylon fibers into one fabric, a substantially more projectileresistant material results which has been found to be better than a fabric woven of either glass fibers or nylon fibers alone. Thus, FIG. 1 shows a woven fabric constructed in accordance with the present invention so as to include individual glass fibers ll interlaced with individual nylon fibers 12 to provide an interwoven relationship between the glass fibers 11 and the nylon fibers 12 comprising the woven fabric 10. In one embodiment, as shown in FIG. 2, a series of woven fabric layers 10 in which glass fibers 11 and tough, flexible fibers 12, such as nylon, are interwoven with the glass fibers 11, is impregnated with resin 13 and bonded into a multi-ply laminate 14. The superior performance of this laminate member 14 as an armor material in com parison to that of comparable laminate members employing resin-impregnated fabric layers woven of only, glass or nylon fibers alone is totally unexpected since it would normally be thought that the test results of the laminate member 14 of FIG. 2 would lie somewhere between the test results obtained from laminate members respective employing woven glass fabric layers and woven nylon fabric layers. While the theoretical aspects of the woven fabric 10 of FIG. 1 and the laminate member 14 of FIG. 2 have not been fully developed, it is believed that there is an interaction between the two types of fibers comprising the woven fabric 10. The glass fiber I1 is thought to serve the function of the strong member and preferably is composed of roving, rather than twisted fibers, while the lighter-weight nylon fiber 12 is believed to function as both a supporting structure and elongating or stretching member. Thus, both high strength and stiffness and high elongation are obtained in one interwoven material. The optimum ratio of glass to nylon has been determined to lie within the range from about 90 parts glass and 10 parts nylon to 10 parts glass and 90 parts nylon, by weight.
The resin binder 13 may be a cured polyester or epoxy resin or preferably a rubber-phenolic resin so that resin elongation, between 10 and 400 percent is obtained, permitting the nylon -glass fabric 10 to move further without delamination. These resins are applied to the woven fabric layers in an uncured state,qafter which the impregnated fabric layers are combined to make the desired configuration and thickness, and then cured in that state. v.
Comparative date demonstrating the notably higher weights required for other armor materials to stop the same projectile under the same conditions is shown in tabular form below.
TABLE I APPROXIMATE EQUIVALENT WEIGHT FOR A" V OF 1600 FT/SEC FOR 0.50 CAL. FRAGMENT SIMULATOR AT 0 OBLIQUITY Material (lbs/sq ft) New nylon-glass, satin weave, about 50/50 volume basis, with resin binder 5.6 Doron II (unidirectional (Style I43) glass with resin binder) 6,1 All nylon fabric, with resin binder 6.3 2024 T-4 Aluminum 7.7 Titanium (6al. 4V) 6.4 Steel, rolled homogenous 7.2
TABLE II Material (lbs/sq ft) Doron II 4.5
New nylon-glass, square weave, about 50/50 volume basis, with resin binder The armor produced by this invention has superior penetration resistance to fragments-per-unit weight of armor, and resists delamination under missile impact. It is especially suitable for use in body armor, although it can find use in the protection of personnel carriers or aircraft such as helicopters, for example, which may be, and commonly are, required to operate at low altitude, bringing them within range of rifle fire from the ground.
However, this combination of fibers, may also be used by itself, i.e., without a binding resin, so that it can follow a moving contour such as a body. Thus, FIG. 3 illustrates body armor 15 made of layers of the woven fabric 10 of FIG. 1. When the binding resin 13 is used with the layers of woven fabric 10, the resulting laminate member 14 of FIG. 2 is rigid and semi-structural. The layers of woven fabric 10 may also be combined with a very hard surface plate 16, such as alumina, a hard ceramic material, as shown in FIGS. 4 and 5. When used without the hard surface plate 16, the laminate member 14 is effective in stopping metal fragments, as from the air burst of an anti-aircraft weapon. With the hard outer surface 16 of alumina, the composite laminate member 14' of FIGS. 4 and is effective in stopping ball and armor piercing bullets, such as .30 cal. and 7.62 mm rifle bullets, even when such projectiles directly import thereagainst. In all three embodiments, this woven fabric has been proven to be more effective as an armor material from a weight standpoint than either an all glass fabric or an all nylon fabric.
While I have designated alumina as the material of the outer surface plate 16 in the embodiment illustrated in FIGS. 4 and 5, any material having a hardness and compressive strength substantially equal to or greater than that for hard steel will also serve. The ideal material for the outer surface plate 16 has compressive strengths above 100,000 psi and hardnesses above Rockwell C-50. Ceramics type materials, such as glass, aluminum oxide (alumina), boron carbide and silicon carbide or the like are ideal.
The described use of the woven fabric 10 for armor material enables a very considerable saving in weight to be obtained in providing protective armor for specific purposes. Preferred embodiments of the invention have been described by way of example, but should not be considered as limiting the invention since various changes in the described embodiments may be made by those skilled in the art without departing from the scope of the invention as defined by the appended claims.
I claim:
I. A lightweight impact and delamination resistant, non-metallic armor member for providing protection against high energy particles, such as projectiles, said armor member comprising:
an outer surface layer of material having a hardness and compressive strength substantially equal to or greater than that of hard steel,
a plurality of layers of fibrous material arranged in stacked superposed relation behind said outer surface layer,
each of said layers of fibrous material comprising a woven fabric of glass and nylon fibers, individual glass fibers in each woven fabric layer being interlaced with individual nylon fibers in the same woven fabric layer so as to provide an interwoven relationship between the glass fibers and the nylon fibers in the same fabric layer, and
each of said plurality of layers of woven fabric being impregnated with resin so as to be bonded together with said outer surface layer to define a laminated composite plate-like structure having a high resistance to the penetration of a high energy particle in relation to its weight which is superior to the penetration resistance of a comparable structure of the same weight but including woven fabric layers of either glass fibers or nylon fibers alone.
2. A lightweight impact and delamination resistant, non-metallic armor member as set forth in claim 1 wherein said glass fibers are roving material.
3. A lightweight impact and delamination resistant, non-metallic armor member as set forth in claim 1 wherein said nylon fibers have lower unit weight than said glass fibers.
4. An armor material for providing protection against high energy particles, such a projectiles, said armor material comprising:
an outer surface layer of material having a hardness and compressive strength substantially equal to or greater than that of hard steel,
a woven fabric of glass and nylon fibers,
individual glass fibers in said woven fabric being interlaced with individual nylon fibers in said woven fabric so as to provide an interwoven relationship between the glass fibers and the nylon fibers in said woven fabric, and
a resinous material coating said glass and nylon fibers and filling the interstices among them so as to form a semistructural fabric material bonded to said outer surface layer and having a high resistance to the penetration of a high energy particle in relation to its weight which is superior to the penetration resistance of a comparable structure of the same weight but including a woven fabric comprising either glass fibers or nylon fibers alone.
5. A lightweight impact and delamination resistant, non-metallic armor member for providing protection against high energy particles, such as projectiles, said armor member comprising:
an outer surface layer of material having a hardness and compressive strength substantially equal to or greater than that of hard steel,
a plurality of layers of fibrous material arranged in stacked superposed relation behind said outer surface layer,
each of said layers of fibrous material comprising a woven fabric of glass and nylon fibers, individual glass fibers in each woven fabric layer being interlaced with individual nylon fibers in the same woven fabric layer so as to provide an interwoven relationship between the glass fibers and the nylon fibers in the same fabric layer, resinuous material coating said glass and nylon fibers of each of said layers of woven fabric and filling the interstices among said fibers so as to bond said plurality of layers of woven fabric together with said outer surface layer,
the relative proportions of glass and nylon fibers in each of said layers of woven fabric lying between 90 parts of glass to parts of nylon and 10 parts of glass to 90 parts of nylon, by weight, and
said outer surface layer and said plurality of layers of woven fabric bonded together therewith defining a laminated composite plate-lik e structure having a high resistance to the penetration of a high energy particle in relation to its weight which is superior to the penetration resistance of a comparable structure of the same weight but including woven fabric layers of either glass fibers or nylon fibers alone.
6. A lightweight impact and delamination resistant, non-metallic armor member as set forth in claim 5 wherein the material of said outer surface layer has a compressive strength substantially equal to or above 100,000 psi and a hardness substantially equal to or above Rockwell C-50.
Claims (7)
1. A lightweight impact and delamination resistant, non-metallic armor member for providing protection against high energy particles, such as projectiles, said armor member comprising: an outer surface layer of material having a hardness and compressive strength substantially equal to or greater than that of hard steel, a plurality of layers of fibrous material arranged in stacked superposed relation behind said outer surface layer, each of said layers of fibrous material comprising a woven fabric of glass and nylon fibers, individual glass fibers in each woven fabric layer being interlaced with individual nylon fibers in the same woven fabric layer so as to provide an interwoven relationship between the glass fibers and the nylon fibers in the same fabric layer, and each of said plurality of layers of woven fabric being impregnated with resin so as to be bonded together with said outer surface layer to define a laminated composite plate-like structure having a high resistance to the penetration of a high energy particle in relation to its weight which is superior to the penetration resistance of a comparable structure of the same weight but including woven fabrIc layers of either glass fibers or nylon fibers alone.
2. A lightweight impact and delamination resistant, non-metallic armor member as set forth in claim 1 wherein said glass fibers are roving material.
3. A lightweight impact and delamination resistant, non-metallic armor member as set forth in claim 1 wherein said nylon fibers have lower unit weight than said glass fibers.
4. An armor material for providing protection against high energy particles, such a projectiles, said armor material comprising: an outer surface layer of material having a hardness and compressive strength substantially equal to or greater than that of hard steel, a woven fabric of glass and nylon fibers, individual glass fibers in said woven fabric being interlaced with individual nylon fibers in said woven fabric so as to provide an interwoven relationship between the glass fibers and the nylon fibers in said woven fabric, and a resinous material coating said glass and nylon fibers and filling the interstices among them so as to form a semistructural fabric material bonded to said outer surface layer and having a high resistance to the penetration of a high energy particle in relation to its weight which is superior to the penetration resistance of a comparable structure of the same weight but including a woven fabric comprising either glass fibers or nylon fibers alone.
5. A lightweight impact and delamination resistant, non-metallic armor member for providing protection against high energy particles, such as projectiles, said armor member comprising: an outer surface layer of material having a hardness and compressive strength substantially equal to or greater than that of hard steel, a plurality of layers of fibrous material arranged in stacked superposed relation behind said outer surface layer, each of said layers of fibrous material comprising a woven fabric of glass and nylon fibers, individual glass fibers in each woven fabric layer being interlaced with individual nylon fibers in the same woven fabric layer so as to provide an interwoven relationship between the glass fibers and the nylon fibers in the same fabric layer, a resinuous material coating said glass and nylon fibers of each of said layers of woven fabric and filling the interstices among said fibers so as to bond said plurality of layers of woven fabric together with said outer surface layer, the relative proportions of glass and nylon fibers in each of said layers of woven fabric lying between 90 parts of glass to 10 parts of nylon and 10 parts of glass to 90 parts of nylon, by weight, and said outer surface layer and said plurality of layers of woven fabric bonded together therewith defining a laminated composite plate-like structure having a high resistance to the penetration of a high energy particle in relation to its weight which is superior to the penetration resistance of a comparable structure of the same weight but including woven fabric layers of either glass fibers or nylon fibers alone.
6. A lightweight impact and delamination resistant, non-metallic armor member as set forth in claim 5 wherein the material of said outer surface layer has a compressive strength substantially equal to or above 100,000 psi and a hardness substantially equal to or above Rockwell C-50.
7. A lightweight impact and delamination resistant, non-metallic armor member as set forth in claim 5, wherein the material of said outer surface layer is selected from the group consisting of glass, alumina, boron carbide, or silicon carbide.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US47767165A | 1965-08-03 | 1965-08-03 |
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US3722355A true US3722355A (en) | 1973-03-27 |
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US3722355D Expired - Lifetime US3722355A (en) | 1965-08-03 | 1965-08-03 | Lightweight armor material |
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Cited By (69)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3873998A (en) * | 1974-03-26 | 1975-04-01 | Us Army | Body armor system |
US3878561A (en) * | 1974-02-19 | 1975-04-22 | Tadeus Carl Winiecki | Armored jacket for motorcycle riders |
US3891880A (en) * | 1972-06-16 | 1975-06-24 | Bbc Brown Boveri & Cie | High voltage winding with protection against glow discharge |
US3924038A (en) * | 1974-06-12 | 1975-12-02 | Us Air Force | Fragment suppression configuration |
US3958276A (en) * | 1975-07-09 | 1976-05-25 | Clausen Carol W | Helmet |
US4115616A (en) * | 1978-02-09 | 1978-09-19 | The United States Of America As Represented By The Secretary Of The Air Force | Self-sealing fuel line assembly |
FR2391446A1 (en) * | 1977-05-18 | 1978-12-15 | Saati Sas Italo Ogliaro C | Bullet-proof vest - with rear and front portions made of overlapping platelets formed from juxtaposed woven polyamide strips impregnated with synthetic resin |
FR2402855A1 (en) * | 1977-09-12 | 1979-04-06 | Bottini Emilio | COMPOSITE BALL BARRIER MATERIAL, WHICH CAN BE IN THE FORM OF FLAT AND CURVED SHEETS OR IN HOLLOW BODIES OF COMPLEX SHAPE |
FR2425046A1 (en) * | 1978-05-03 | 1979-11-30 | Saint Louis Inst | Bullet-proof shields of hard sheet metal backed by resin bonded fibres - to inhibit penetration by soft pointed bullets |
US4181768A (en) * | 1974-10-31 | 1980-01-01 | E. I. Du Pont De Nemours And Company | Body armor laminate |
FR2431674A1 (en) * | 1978-07-18 | 1980-02-15 | Fontauto Spa | Bulletproof vests of metallic sheet backed by high tensile fabrics - to restrict deformation and penetration of the fibres |
EP0016945A1 (en) * | 1979-03-30 | 1980-10-15 | Pier Luigi Nava | Reinforced impact resistant resin structure and its related process of manufacture |
FR2469277A1 (en) * | 1979-11-08 | 1981-05-22 | Poudres & Explosifs Ste Nale | Glass or poly:aramid fabric reinforced explosion resistant material - based on viscoelastic thermosetting or thermoplastic resins, esp. epoxy! resins, esp. as armour plating or vehicle bumpers |
US4292882A (en) * | 1977-06-07 | 1981-10-06 | Clausen Carol W | Armor comprising a plurality of loosely related sheets in association with a frontal sheet comprising metal abrading particles |
US4442780A (en) * | 1980-07-21 | 1984-04-17 | Child Laboratories Inc. | Clipboard and shield |
FR2537502A1 (en) * | 1982-12-13 | 1984-06-15 | Ind Plastique Mecanique | COMPOSITE MATERIAL COMPRISING A STRAPPED SHAPE OF A WOVEN TABLE, IMPREGNATED WITH PLASTIC MATERIAL AND PROVIDED WITH AT LEAST ONE EXTERNAL COATING LAYER |
US4486491A (en) * | 1984-02-13 | 1984-12-04 | Kerekes Peter S | Non-ricocheting armor panel |
GB2144973A (en) * | 1983-08-08 | 1985-03-20 | Figgie Int Inc | Ballistic resistant armour panel and method of constructing the same |
US4513055A (en) * | 1981-11-30 | 1985-04-23 | Trw Inc. | Controlled thermal expansion composite and printed circuit board embodying same |
EP0188747A1 (en) * | 1985-01-23 | 1986-07-30 | TECNO FIBRE S.p.A. | Caps of composite material for personal protection, such as helmets and the like |
EP0197279A2 (en) * | 1985-02-28 | 1986-10-15 | AlliedSignal Inc. | Complex composite article having improved impact resistance |
US4639387A (en) * | 1983-04-25 | 1987-01-27 | Budd Company | Fibrous armor material |
US4679485A (en) * | 1984-12-27 | 1987-07-14 | Sundstrand Corporation | Ballistic tolerant dual load path ballscrew and ballscrew actuator |
US4715262A (en) * | 1984-12-27 | 1987-12-29 | Sundstrand Corporation | Ballistic tolerant dual load path ballscrew and ballscrew actuator |
US4810559A (en) * | 1987-04-09 | 1989-03-07 | Drospo Inc. | Fabric with wear and abrasion resistant platelets |
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US4679485A (en) * | 1984-12-27 | 1987-07-14 | Sundstrand Corporation | Ballistic tolerant dual load path ballscrew and ballscrew actuator |
US4715262A (en) * | 1984-12-27 | 1987-12-29 | Sundstrand Corporation | Ballistic tolerant dual load path ballscrew and ballscrew actuator |
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EP0197279A2 (en) * | 1985-02-28 | 1986-10-15 | AlliedSignal Inc. | Complex composite article having improved impact resistance |
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US4737402A (en) * | 1985-02-28 | 1988-04-12 | Allied Corporation | Complex composite article having improved impact resistance |
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