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GB2191147A - Impact resistant panel - Google Patents

Impact resistant panel Download PDF

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Publication number
GB2191147A
GB2191147A GB08613444A GB8613444A GB2191147A GB 2191147 A GB2191147 A GB 2191147A GB 08613444 A GB08613444 A GB 08613444A GB 8613444 A GB8613444 A GB 8613444A GB 2191147 A GB2191147 A GB 2191147A
Authority
GB
United Kingdom
Prior art keywords
impact resistant
panel
resistant panel
ofthe
buildings
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB08613444A
Other versions
GB2191147B (en
GB8613444D0 (en
Inventor
Robert George Quested Sha Hill
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB8613444A priority Critical patent/GB2191147B/en
Publication of GB8613444D0 publication Critical patent/GB8613444D0/en
Publication of GB2191147A publication Critical patent/GB2191147A/en
Application granted granted Critical
Publication of GB2191147B publication Critical patent/GB2191147B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/10—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • 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
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/10—Next to a fibrous or filamentary layer
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/024—Woven fabric
    • 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
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • F41H5/0442—Layered armour containing metal
    • F41H5/0457—Metal layers in combination with additional layers made of fibres, fabrics or plastics
    • F41H5/0464—Metal layers in combination with additional layers made of fibres, fabrics or plastics the additional layers being only fibre- or fabric-reinforced layers
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/30—Iron, e.g. steel
    • 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
    • B32B2607/00—Walls, panels

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

A high velocity impact resistant panel consists of a composite of multiply wood 1, stainless steel sheets 2 and polyamide-polyester woven textile 3, the layers being adhered together by epoxy type resins. The panel is lightweight enough to be of use in existing buildings but it is also capable of being used as the main construction material for small buildings like site offices and canteens. <IMAGE>

Description

SPECIFICATION High impact resistant panel This invention relates to a high impact resistant panel which can be used either in new construction, or as a protective cladding in existing buildings, in orderto guardthe occupantsfrom the dangers of shrapnel or palled masonry when such buildings are the target of car bombs or ballistic mortars.
In urban situations, where home made weapons and explosives are being used, there exists a situation which is notamendabletostandard treatment by the rules and mechanics which have been evolved in the studyof armoury. Inthefirst instancethe metallurgy of the missile has notbeen designed and it is invariably shaped from commercial sheet, pipe and rod from mild steel and secondly the explosive charge is not organo-nitro in composition and is not shaped.
Bearing all these situations in mind there is required a high impact resistant panel which can be used to construct small area single storey buildings for use as site offices or canteens orto clad existing buildings so as to render them safe from attack by high speed shrapnel from car bombs or high energy impactfromslowspeed high weight ballistic mortars of the home made type.
In the case of cladding it is essential that the load put upon existing buildings be consistentwith the age ofthe building and its load bearing capacity, invariablythe requirement isthatthe load should be as light as possible. This factor produces the need for lightweight armoury and of course this parameter is normally inconsistent with the normal rules of ballistic attenuation which specify high weight reinforced concretes or high tensile steel plate of calculated thickness.
Use can be made ofwood, fibre and steel, as composites, for panel construction in the urban war situation and according to the present invention there is provided a high impact resistent panel in the form of interlocking units, or cladding sections, which serve to hold high speed, lightweight shrapnel on one hand and to retain low speed ballistic mortars on the otherwithout producing masonryspalling afterthe latter has exploded. Being constructed, in the main by volume, of low density components the panels are lightweight when compared with reinforced concrete or steel plate and their attachmenttoexisting buildings, using the ground as foundation, does not in anyway overload the structures.In cases of flat roofed buildings, or under the roof of slated structures,the panels are lightweight enough to be supported wall to wall and give the needed protection to th is most vu nerable aspect ofthe structure.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which Figure lisa cross section of the panel showing the order of the elements in the composite.
Referring to the drawing the high impact resistant panel comprises a composite made up of a number ofthree distinct elements, namely 22mm x 11 ply wood, 2.1 mm panels of stainless steel and double layers of a polyamide/polyesterfabric sold as Stabilenka 400 (TM) all bonded together with twin pack epoxy and other resins and shown in the drawing as 1,2 and 3 respectively. The overall depth ofthickness of the shown embodiment is about 160mm and the following materials were used in its build-up.
(a) Plywood, beech or other grain crossply high tensiletimberas 11 ply.
(b) Stainless steel grade 304 bonded in pairs of plates with an epoxy resin ofthe type Ciba/Geigy 7064.
(c) Stabilanka fabric bonded in pairs of sheets with resin Ciba/Geigy6414AorXB3117.
In practical use, undertestfiring conditions, itis foundthatthefibrousnatureoftheexternal grade plywood allows the missile two penetrate and destort its structure thus absorbing some energy and preventing the ricochetting of shrapnel. During the penetration of the wood the stainless steel plates begin to bulge inwards, ordestort, and asthis happens its resistenceto deformation increases because it has been selected as a good work-hardening grade. As the penetration process continuesthefabric now takes on an energy absorbing role because it has equal strength in both directions, because ofthe weave, and is placed in a position in the composite where the wood and steel have absorbed much of the initial impact energy.The stopping power depends on the energies involved and in practice it is found thatthe 160mm thickness ofthe panel is a good optimisation between stopping power and weight.
1. Ahighvelocity impact resistant panel comprising composite of laminates intheform of multiplywood, work hardening stainless steel sheets and layers of textile fabric formed as a rigid monolith by the overall use of a thermosetting adhesive or resin.
2. A high velocity impact resistant panel substantiallyas in Claim 1 wherein the work hardening stainless steel sheet is used in pairs of sheets which are bonded together, prior to panel construction, by the use of an epoxy type resin.
3. A high velocity impact resistant panel substantially as in Claim 1 wherein the textile fabric is bonded in pairs of sheets, at the time of panel construction, by the use of a less rigid epoxy resin than the type used in Claim 2.
4. A high velocity impact resistant panel substantially as in any ofthe above Claims in which the panel face A, as in the Figure, is the outward face ofthe panel which is used to clad a building or protect a roof.
5. A high velocity impact resistant panel substantially as in Claim 2 wherein the adhesive is an epoxy resin similar to the Ciba/Geigy Type 7064(TM).
6. A high velocity impact resistant panel substantially as in Claim 3 where the adhesive is an epoxy resin similar to the Ciba/Geigy Types 641 4A or
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (8)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION High impact resistant panel This invention relates to a high impact resistant panel which can be used either in new construction, or as a protective cladding in existing buildings, in orderto guardthe occupantsfrom the dangers of shrapnel or palled masonry when such buildings are the target of car bombs or ballistic mortars. In urban situations, where home made weapons and explosives are being used, there exists a situation which is notamendabletostandard treatment by the rules and mechanics which have been evolved in the studyof armoury. Inthefirst instancethe metallurgy of the missile has notbeen designed and it is invariably shaped from commercial sheet, pipe and rod from mild steel and secondly the explosive charge is not organo-nitro in composition and is not shaped. Bearing all these situations in mind there is required a high impact resistant panel which can be used to construct small area single storey buildings for use as site offices or canteens orto clad existing buildings so as to render them safe from attack by high speed shrapnel from car bombs or high energy impactfromslowspeed high weight ballistic mortars of the home made type. In the case of cladding it is essential that the load put upon existing buildings be consistentwith the age ofthe building and its load bearing capacity, invariablythe requirement isthatthe load should be as light as possible. This factor produces the need for lightweight armoury and of course this parameter is normally inconsistent with the normal rules of ballistic attenuation which specify high weight reinforced concretes or high tensile steel plate of calculated thickness. Use can be made ofwood, fibre and steel, as composites, for panel construction in the urban war situation and according to the present invention there is provided a high impact resistent panel in the form of interlocking units, or cladding sections, which serve to hold high speed, lightweight shrapnel on one hand and to retain low speed ballistic mortars on the otherwithout producing masonryspalling afterthe latter has exploded. Being constructed, in the main by volume, of low density components the panels are lightweight when compared with reinforced concrete or steel plate and their attachmenttoexisting buildings, using the ground as foundation, does not in anyway overload the structures.In cases of flat roofed buildings, or under the roof of slated structures,the panels are lightweight enough to be supported wall to wall and give the needed protection to th is most vu nerable aspect ofthe structure. A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which Figure lisa cross section of the panel showing the order of the elements in the composite. Referring to the drawing the high impact resistant panel comprises a composite made up of a number ofthree distinct elements, namely 22mm x 11 ply wood, 2.1 mm panels of stainless steel and double layers of a polyamide/polyesterfabric sold as Stabilenka 400 (TM) all bonded together with twin pack epoxy and other resins and shown in the drawing as 1,2 and 3 respectively. The overall depth ofthickness of the shown embodiment is about 160mm and the following materials were used in its build-up. (a) Plywood, beech or other grain crossply high tensiletimberas 11 ply. (b) Stainless steel grade 304 bonded in pairs of plates with an epoxy resin ofthe type Ciba/Geigy 7064. (c) Stabilanka fabric bonded in pairs of sheets with resin Ciba/Geigy6414AorXB3117. In practical use, undertestfiring conditions, itis foundthatthefibrousnatureoftheexternal grade plywood allows the missile two penetrate and destort its structure thus absorbing some energy and preventing the ricochetting of shrapnel. During the penetration of the wood the stainless steel plates begin to bulge inwards, ordestort, and asthis happens its resistenceto deformation increases because it has been selected as a good work-hardening grade. As the penetration process continuesthefabric now takes on an energy absorbing role because it has equal strength in both directions, because ofthe weave, and is placed in a position in the composite where the wood and steel have absorbed much of the initial impact energy.The stopping power depends on the energies involved and in practice it is found thatthe 160mm thickness ofthe panel is a good optimisation between stopping power and weight. CLAIMS
1. Ahighvelocity impact resistant panel comprising composite of laminates intheform of multiplywood, work hardening stainless steel sheets and layers of textile fabric formed as a rigid monolith by the overall use of a thermosetting adhesive or resin.
2. A high velocity impact resistant panel substantiallyas in Claim 1 wherein the work hardening stainless steel sheet is used in pairs of sheets which are bonded together, prior to panel construction, by the use of an epoxy type resin.
3. A high velocity impact resistant panel substantially as in Claim 1 wherein the textile fabric is bonded in pairs of sheets, at the time of panel construction, by the use of a less rigid epoxy resin than the type used in Claim 2.
4. A high velocity impact resistant panel substantially as in any ofthe above Claims in which the panel face A, as in the Figure, is the outward face ofthe panel which is used to clad a building or protect a roof.
5. A high velocity impact resistant panel substantially as in Claim 2 wherein the adhesive is an epoxy resin similar to the Ciba/Geigy Type 7064(TM).
6. A high velocity impact resistant panel substantially as in Claim 3 where the adhesive is an epoxy resin similar to the Ciba/Geigy Types 641 4A or XB3117(TM's).
7. A high velocity impact resistant panel substantially as in Claim 3 wherein the textile fibre is made from a polyamide + polyester blend which is woven in such a conformation that it has equal strength in both directions of the weft and warp and is embodied in a product known as Stabilenka 400 (TM).
8. A high velocity impact resistant panel substantially as in any ofthe above Claims and as illustrated in the Composite Section of the Figure.
GB8613444A 1986-06-03 1986-06-03 High impact resistant panel Expired - Lifetime GB2191147B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8613444A GB2191147B (en) 1986-06-03 1986-06-03 High impact resistant panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8613444A GB2191147B (en) 1986-06-03 1986-06-03 High impact resistant panel

Publications (3)

Publication Number Publication Date
GB8613444D0 GB8613444D0 (en) 1987-04-15
GB2191147A true GB2191147A (en) 1987-12-09
GB2191147B GB2191147B (en) 1991-01-23

Family

ID=10598855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8613444A Expired - Lifetime GB2191147B (en) 1986-06-03 1986-06-03 High impact resistant panel

Country Status (1)

Country Link
GB (1) GB2191147B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3923471A1 (en) * 1989-07-15 1991-01-24 Martin Trautz Wooden structure with laminated members - has joints formed from metal plates between laminations of wood
WO1996029561A1 (en) * 1995-03-18 1996-09-26 Gerd Kellner Multilayer armour plating material
WO2003033252A1 (en) * 2001-10-15 2003-04-24 E. I. Du Pont De Nemours And Company Fiber reinforced composite sheathing for storm protection
WO2004050346A1 (en) * 2002-12-03 2004-06-17 E.I. Du Pont De Nemours And Company Composite for storm protection
WO2006076356A1 (en) * 2005-01-13 2006-07-20 E.I. Dupont De Nemours And Company Composite for protection against wind and wind blown debris
EP1921415A1 (en) * 2006-11-08 2008-05-14 Plasan Sasa Ltd. Armor
WO2011101546A1 (en) * 2010-02-19 2011-08-25 Metsäliitto Osuuskunta Composite panel and method for manufacturing same
EP2744653B1 (en) 2011-08-19 2017-09-27 Metsäliitto Osuuskunta Insulated panel and method of manufacturing the same

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3923471A1 (en) * 1989-07-15 1991-01-24 Martin Trautz Wooden structure with laminated members - has joints formed from metal plates between laminations of wood
WO1996029561A1 (en) * 1995-03-18 1996-09-26 Gerd Kellner Multilayer armour plating material
WO2003033252A1 (en) * 2001-10-15 2003-04-24 E. I. Du Pont De Nemours And Company Fiber reinforced composite sheathing for storm protection
WO2004050346A1 (en) * 2002-12-03 2004-06-17 E.I. Du Pont De Nemours And Company Composite for storm protection
WO2006076356A1 (en) * 2005-01-13 2006-07-20 E.I. Dupont De Nemours And Company Composite for protection against wind and wind blown debris
EP1921415A1 (en) * 2006-11-08 2008-05-14 Plasan Sasa Ltd. Armor
US7930965B2 (en) 2006-11-08 2011-04-26 Plasan Sasa Ltd. Armor
WO2011101546A1 (en) * 2010-02-19 2011-08-25 Metsäliitto Osuuskunta Composite panel and method for manufacturing same
EP2536895B1 (en) 2010-02-19 2019-05-08 Metsäliitto Osuuskunta Method for manufacturing composite panel
EP2536895B2 (en) † 2010-02-19 2022-08-03 Metsäliitto Osuuskunta Method for manufacturing composite panel
EP2744653B1 (en) 2011-08-19 2017-09-27 Metsäliitto Osuuskunta Insulated panel and method of manufacturing the same

Also Published As

Publication number Publication date
GB2191147B (en) 1991-01-23
GB8613444D0 (en) 1987-04-15

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PCNP Patent ceased through non-payment of renewal fee
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Free format text: 5367, PAGE 100

PCNP Patent ceased through non-payment of renewal fee