A helmet has inner and outer shells separated by a plurality of interconnected relatively soft columns or posts. The columns each have a middle post or pillar section, a capital that is of larger diameter than the post, and a base also of larger transverse dimension than the post. When an impact above a design threshold occurs on the outer shell, the columns, particularly the post sections thereof, near the impact location compress and buckle, dissipating impact kinetic energy, while columns spaced from the impact zone stretch and support more of the impact force. The applied force is therefore reduced and spread out over a relatively large area, and a resultant wave created within the column manifold disperses additional heat, further reducing the force and torque applied on the outer shell and transmitted to the inner shell and onto the skull of a helmet user. A method and mold for fabricating the column manifold are also disclosed.

The present invention relates to an article comprising a ceramic substrate (310) comprising a source of zirconium oxide; a metallic substrate (320); and a braze joint disposed between the ceramic substrate and the metallic substrate. The braze joint comprises (i) a gold rich phase (330) interfacing against a surface of the ceramic substrate. The gold rich phase comprises a refractory metal selected from the group consisting of molybdenum, tungsten, niobium, tantalum and combinations thereof; and (ii) a second metallic phase (340) comprising a metal selected form the group consisting of nickel, iron, vanadium, cobalt, chromium, osmium, tantalum or combinations thereof.

In accordance with one embodiment of the present disclosure, a method for manufacturing a honeycomb core sandwich panel includes placing a thermoset facesheet in contact with a thermoplastic honeycomb core without using a separate adhesive and attaching the thermoset facesheet to the thermoplastic honeycomb core by using a curing profile comprising a temperature that is lower than a gel point temperature of the thermoset facesheet and higher than a softening point temperature of the thermoplastic honeycomb core.

A biaxially-oriented polyethylene (BOPE) multilayer film comprises a skin layer with a matte surface and a core, the skin layer with a matte surface comprising, in weight percent (wt %) based upon the weight of the skin layer: (1) from 20 to 80 wt % of an ethylene-based polymer, and (2) from 80 to 20 wt % of a propylene-based polymer; each of the ethylene-based polymer and the propylene-based polymer having a storage modulus, with a difference between the storage modulus of the ethylene-based polymer and the propylene-based polymer of greater than 40 megaPascals (MPa) at 110 C., and greater than 18 MPa at 120 C.

Disclosed is an unbonded flexible pipe for subsea transportation of fluids. The pipe has a length and a centre axis and includes a plurality of layers including at least one polypropylene based layer including a modified polypropylene compound including: at least about 50% by weight of a base polypropylene (base PP) which consists of polypropylene including up to about 10% by weight of one or more co-monomers other than propylene, and at least about 1% by weight of a plastomer including a propylene and at least one co-monomer other than propylene.

The present invention is a laminated glass which is prepared by inserting a resin intermediate film between glass plates and adhering the glass plates to integrate them, having a bending deflection at 90 C. is 7.3 N/mm.sup.2 or higher, a weight per unit area is 7.5 kg/m.sup.2 or less, wherein the resin intermediate film contains a modified hydrogenated block copolymer [E] obtained by introducing an alkoxysilyl group into a hydrogenated block copolymer [D], storage elastic moduli in the dynamic viscoelastic properties of the resin intermediate film are 510.sup.8 Pa or lower at a temperature of 20 C. and 210.sup.7 Pa or higher at a temperature of 90 C., and the hydrogenated block copolymer [D] is obtained by hydrogenating 90% or more of carbon-carbon unsaturated bonds on a main chain and side chains and carbon-carbon unsaturated bonds on an aromatic ring in a specific block copolymer [C].

In accordance with one embodiment of the present disclosure, a method for manufacturing a honeycomb core sandwich panel includes placing a thermoset facesheet in contact with a thermoplastic honeycomb core without using a separate adhesive and attaching the thermoset facesheet to the thermoplastic honeycomb core by using a curing profile comprising a temperature that is lower than a gel point temperature of the thermoset facesheet and higher than a softening point temperature of the thermoplastic honeycomb core.

A reinforcing device comprising a composite reinforcing patch including a first layer comprising a first activatable material that is flexible and tacky in its green state prior to activation, a second layer comprising a stabilizing material selected from a mesh, a film, a chemical coating, a fibrous or spherical material, or a second activatable material located in planar contact with the activatable material and along the entirety of a first surface of the activatable material, and an optional third layer comprising a mesh, a film, a chemical coating, second activatable material, or a release paper located in planar contact with the activatable material and along the entirety of a surface of the first layer or second layer, wherein upon activation of the activatable material, the presence of the second layer, the optional third layer, or both provides dimensional stability to the activatable material and minimizes shrinking of the activatable material.

Disclosed are multilayer films with at least one MDO substrate.

A second resin-impregnated fiber sheet (12) contains fibers extending in a first direction. A third resin-impregnated fiber sheet (13) contains fibers extending in a second direction that is different from the first direction. A first main surface (1a) is provided with a plurality of first linear protruding portions (1a1) extending in the first direction. A second main surface (1b) is provided with a plurality of second linear protruding portions (1b1) extending in the second direction.