A method, a device and a computer program for manufacturing a pre-insulated skeleton framing segment for a building to be constructed, wherein an assembly with a hollow space is provided, to which a data carrier is fitted including data from which a quantity of raw materials required for forming a foam insulation layer of a thickness in the hollow space can be determined, which quantity is calculated, and which raw materials are inserted in the hollow space, and foam and harden there during a period.

A method of the present disclosure includes of repairing a core stiffened structure with structural foam. Another method includes splicing core members together using structural foam. Another method includes joining a core member to a structure using structural foam. Another method includes using structural foam to stabilize a core member during a machining process. Another method includes stabilizing a core member with structural foam to prevent the core member from crushing in autoclave pressure. The present disclosure further includes a core stiffened structure have a core member with structural foam therein.

A three-dimensional network structure is impregnated with a foam material through an osmosis membrane. The foam material is then solidified. The foam material with which the three-dimensional network structure is impregnated is in contact with resin wires of the three-dimensional network on a wide area and is solidified. Thus, a bonded body that comprises the three-dimensional network structure and a foam and has improved connection strength can be manufactured.

A method of repairing a core stiffened structure can include removing a damaged portion of the core stiffened structure; creating a cutout in a portion of a repair core member; fitting the repair core member onto an existing core member such that the cutout mates with a portion of the existing core member; bonding the repair core member to the existing core member; and placing a skin patch over the repair core member.