Sandwich panel, insert therefor, structure comprising sandwich panels and method of joining such panels

• US 6,789,367 B1
• Filed: 08/14/2001
• Issued: 09/14/2004
• Est. Priority Date: 02/13/1999
• Status: Expired due to Fees

• Current Assignee: Qinetiq Limited (QinetiQ Group PLC)
• Original Assignee: Qinetiq Limited (QinetiQ Group PLC)
• Inventors: Dando, Glyn C.
• Primary Examiner(s): Friedman, Carl D.
• Assistant Examiner(s): KATCHEVES, BASIL S
• Application Number:
  US09/890,859
• Time in Patent Office: 1,127 Days
• Field of Search: 527/471, 522/71, 522/381, 526/57, 527/831, 527/831.1, 527/831.7, 527/831.8, 527/841.4
• US Class Current: 52/657
• CPC Class Codes: F16B 5/01 by means of fastening elements specially adapted for honeycomb panels

Abstract

A sandwich panel including a core material sandwiched between plate members, and an insert member locally replacing the core and having a profile so as to intermesh with an appropriately profiled member on the unit to which it to be connected as well as a method of connecting sandwich panels by inserting an insert member having a profiled side so as to interlock with an appropriately profiled member on the unit to which it is to be connected.

Claims

1. A structure comprising:

a sandwich panel comprising a core material sandwiched between plate members and a profiled member located between the plate members at a selected position; and

a unit joined to said sandwich panel comprising a second profiled member intermeshing with said profiled member of said sandwich panel;

said intermeshing profiled members defining a plurality of pairs of closely confronting surfaces perpendicular to the planes of said plate members between which surfaces adhesive is applied to bond said profiled members together and whereby loads tending to separate said panel and unit, in a direction opposite to the relative movement by which said profiled members are intermeshed, can be transferred between said profiled members through said adhesive in shear.

2. A structure according to claim 1 wherein said unit is a second sandwich panel comprising a core material sandwiched between plate members and said second profiled member is located between the respective plate members at a selected position.

3. A structure according to claim 2, wherein, in at least one of said sandwich panels, one of the plate members is longer than the other and the respective profiled member extends so as to be substantially flush with the edge of said longer plate member.

4. A structure according to claim 1, wherein the profile of each said profiled member is corrugated.

5. A structure comprising,

a first sandwich panel;

and

a second sandwich panel;

each of said panels comprising a core material sandwiched between plate members and an insert member between the respective plate members, each of said insert members presenting a profile in the form of rectangular corrugations having successive crowns and troughs, the widths of said crowns and the widths of said troughs substantially equal, and said panels interconnected by intermeshing of said profiles.

6. A structure according to claim 5, wherein said profiles are bonded together by adhesive.

7. A structure comprising:

a first sandwich panel;

a second sandwich panel;

each of said panels comprising a core material sandwiched between plate members and an insert member between the respective plate members, said insert members having respective profiles interengaged to positionally locate said panels relative to each other, each said profile in the form of rectangular corrugations having successive crowns and troughs, the widths of said crowns and the widths of said troughs substantially equal; and

adhesive for adhesively bonding the insert members to each other.

8. A structure comprising:

a sandwich panel comprising a core material sandwiched between plate members and a profiled member located between the plate members at a selected position; and

a unit jointed to said sandwich panel comprising a second profiled member intermeshing with said profiled member of said sandwich panel,

the profile of each said profiled member is in the form of rectangular corrugations having successive crowns and troughs, the widths of said crowns and the widths of said troughs substantially equal;

said intermeshing profiled members defining a plurality of confronting surfaces perpendicular to the planes of said plate members between which surfaces adhesive is applied to bond said profiled members together and whereby loads in a direction tending to separate said panel and unit can be transferred between said profiled members through said adhesive in shear.

9. A method of joining a sandwich panel to another unit,

the sandwich panel comprising a core material sandwiched between plate members and a first profiled member located between the plate members of said sandwich panel at a selected position;

said unit comprising a second profiled member complementary to the first profiled member, said profiled members shaped to define a plurality of pairs of closely confronting surfaces perpendicular to the planes of said plate members when said profiled members are intermeshed; and

the method comprising;

intermeshing said profiled members by relative movement between them and with adhesive applied between said confronting surfaces whereby to bond said profiled members together and whereby loads tending to separate said panel and unit, in a direction opposite to said relative movement can be transferred between said profiled members through said adhesive in shear.

10. A method according to claim 9 wherein said other unit is a second sandwich panel comprising a core material sandwiched between plate members and said second profiled member is located between the respective plate members at a selected position.