Detecting mishandling of a packaging container. The apparatus includes: a first layer, a second layer to detect pressure placed on the packaging container, a third layer to provide spacing between the second layer and the packaging container, and an adhesive layer. The first later is a made of a rigid material. The first layer attaches to the second layer, and the second layer attaches to the third layer to form a composite structure of the first, second and third layers that attaches to the adhesive layer.

A composite panel assembly and method of forming the same includes a core, an inner skin coupled to a first side of the core, and an outer skin coupled to a second side of the core. A peripheral edge including portions of the core, the inner skin, and the outer skin, is compressed to close a path into the core.

Embodiments disclosed herein relate to polymer resins having a first thermoset and one or more additional components (e.g., a second thermoset and/or a thermoplastic), composite laminates including the same, methods of making and using the same, and composite laminate structures including the same.

A motor vehicle roof shell having a rigid composite component having an inner side facing a vehicle interior, and an acoustic insulation layer disposed on the inner side of the composite component. The panel-type rigid composite component has at least one tray-like recess on its inner side, said recess being filled with an open-pored foam material which forms the acoustic insulation layer and whose surface is flush with a surface of the composite component surrounding the recess. A motor vehicle roof shell motor vehicle having a panel-type rigid composite component having an inner side, which faces the vehicle interior, and an acoustic insulation layer disposed on the inner side of the composite component, wherein the acoustic insulation layer is formed by at least one rigid-foam or semi-rigid-foam plate which is bonded to the inner side of the composite component and compressed that its volume is reduced compared to preassembly state.

An impact attenuation system comprises an aluminum honeycomb sheet having a top surface and a bottom surface. The aluminum honeycomb sheet defines a plurality of approximately hexagonally shaped cells. The bottom surface defines a single sheet of contiguous cells and the top surface defines two or more islands of contiguous cells separated by one or more slits. At least a portion of one or both of the top surface and bottom surface may be covered by a polymer skin. The polymer skin may comprise carbon fibers and/or fiberglass.

An impact attenuation system comprises an aluminum honeycomb sheet having a top surface and a bottom surface. The aluminum honeycomb sheet defines a plurality of approximately hexagonally shaped cells. The bottom surface defines a single sheet of contiguous cells and the top surface defines two or more islands of contiguous cells separated by one or more slits. At least a portion of one or both of the top surface and bottom surface may be covered by a polymer skin. The polymer skin may comprise carbon fibers and/or fiberglass.

A motor vehicle roof shell having a rigid composite component having an inner side facing a vehicle interior, and an acoustic insulation layer disposed on the inner side of the composite component. The panel-type rigid composite component has at least one tray-like recess on its inner side, said recess being filled with an open-pored foam material which forms the acoustic insulation layer and whose surface is flush with a surface of the composite component surrounding the recess. A motor vehicle roof shell motor vehicle having a panel-type rigid composite component having an inner side, which faces the vehicle interior, and an acoustic insulation layer disposed on the inner side of the composite component, wherein the acoustic insulation layer is formed by at least one rigid-foam or semi-rigid-foam plate which is bonded to the inner side of the composite component and compressed that its volume is reduced compared to preassembly state.

A composite panel assembly and method of forming the same includes a core, an inner skin coupled to a first side of the core, and an outer skin coupled to a second side of the core. A peripheral edge including portions of the core, the inner skin, and the outer skin, is compressed to close a path into the core.

Embodiments described herein relate to a composite structures or sandwiches that may have a relatively high bending stiffness and may have a relatively light weight as well as related methods of use and fabrication of the composite sandwiches. For example, a composite sandwich may include a core structure sandwiched between a two composite skins.

Embodiments described herein relate to a composite structures or sandwiches that may have a relatively high bending stiffness and may have a relatively light weight as well as related methods of use and fabrication of the composite sandwiches. For example, a composite sandwich may include a core structure sandwiched between a two composite skins.