A truck cap and a closed-cavity bag molding process of making a truck cap. The truck cap includes a composite base and a composite top coupled to the composite base. The composite top has a reinforcement positioned between first and second layers of fiber mats. A closed-cavity bag molding process of making a truck cap includes placing a first layer of fiber mat into a mold cavity, applying a bleeder strip around an edge of the mat and periphery of the mold, placing a reinforcement into a roof portion of the mold, placing a second layer of fiber mat into the mold cavity over the first layer and reinforcement layer, providing a flexible cover over the layers of fiber mat, actuating a vacuum to remove most of the air between the cover and mold, and delivering resin to the layers of fiber mat and reinforcement.

An impact resistant exterior sheathing gypsum building panel with an integrated impact resistant woven mesh which protects against impact from projectiles such as those conveyed by hurricane force winds is provided. Methods for manufacturing these exterior sheathing gypsum building panels with an integrated impact resistant woven mesh are also provided. An exterior sheathing system employing the exterior sheathing cementitious building panel is provided.

A protective cover includes a padding layer and at least one backing layer comprising a network of fiber-reinforced plastic (FRP) threads, wherein a surface of the at least one backing layer is substantially rectangular comprising a first side, and wherein a plurality of the FRP threads are arranged along a direction that is oblique relative to the first side.

The present disclosure relates to insulation. Various embodiments thereof may include a solid insulation material and/or a formulation for production of an insulation system. For example, a formulation for an impregnating agent may include: an impregnating resin comprising a cycloaliphatic epoxy resin having a viscosity of less than 1500 mPas at impregnation temperature; and a curing catalyst deposited in the solid insulation material. The curing catalyst may be reactive toward the cycloaliphatic epoxy groups of the cycloaliphatic epoxy resin in the formulation of the impregnating agent but be sufficiently reactively inert with respect to the functional groups of the tape adhesive likewise present in the solid insulation material to confer storage stability to the solid insulation material.

Methods of preparing laminate test samples for subsequent testing, including positioning the test sample within a fixture body, securing the test sample within the fixture body, applying a separating force to urge a first layer portion of the test sample away from a second layer portion of the test sample, and separating the first layer portion from the second layer portion to create a predetermined separation length along the test sample, provided that the predetermined separation length is established by an interaction between the fixture body and the test sample as the first layer portion is separating from the second layer portion.

An LWRT material having a core layer that includes thermoplastically bound structural fibers, and having at least one outer layer that likewise includes thermoplastically bound structural fibers, the outer layer also having bicomponent fibers as structural binder fibers, each of which has a fiber core made of a fiber core material with a predetermined fiber core melting or fiber core softening temperature, and a sheath surrounding the fiber core radially and made of a thermoplastic sheath material with a predetermined sheath melting or sheath softening temperature, the sheath melting or sheath softening temperature being lower than the fiber core melting or fiber core softening temperature, and the sheaths of the bicomponent fibers contributing to the thermoplastic binding of fibers in the outer layer.

A composite skin is attached to an underlying structure by fasteners that are countersunk into the structure. The composite skin comprises a thermoplastic material that has been melted and formed into a countersink in the structure using a heated tool.

A ceiling material body (1a) includes a substrate layer (2) formed from rigid urethane foam; a first fiber-reinforced layer (3) provided on an in-cabin side of the substrate layer (2); a second fiber-reinforced layer (4) provided on an out-cabin side of the substrate layer (2); a surface layer (5) provided on an in-cabin side of the first fiber-reinforced layer (3); and a back layer (6) provided on an out-cabin side of the second fiber-reinforced layer (4). The second fiber-reinforced layer (4) includes a glass paper (7) overlaying the substrate layer (2) and a glass mat (8) overlaying an opposite side of the glass paper (7) from the substrate layer (2).

The assembly consists of at least one metal insert and one reinforcing sheet. The reinforcing sheet contains reinforcing fibers longer than or equal in length to one centimeter. The metal insert comprises protrusions shaped to traverse the sheet, passing between the reinforcing fibers, and to fold by plastic deformation, enclosing the reinforcing fibers when said protrusions are subjected to a longitudinal compression force.

A fiber-metal laminate of mutually bonded fiber-reinforced composite layers and metal sheets comprises a combination of a fiber-reinforced composite layer and an adjacent metal sheet, in which combination the properties satisfy the following relations: E.sub.lam*E.sub.comp/(E.sub.metal*t.sub.metal.sup.2) has a value between a lower bound given by
a*(Vfc).sup.(b/(Vf-c)) with b=0.36 and c=0.3(1a)
and zero when Vf0.3,(1b)
and an upper bound given by
a*(Vfc).sup.(b/(Vf-c)) with b=0.88 and c=0(1c)
0.10Vf<0.54(2)
0<E.sub.lam*E.sub.comp/(E.sub.metal*t.sub.metal.sup.2)<400*Vf kN/mm.sup.4(3)
wherein a=1200 kN/mm.sup.4; and
E.sub.comp=tensile Young's modulus of the fiber-reinforced composite layer in kN/mm.sup.2 in the combination, taken in the direction of highest stiffness of the composite layer
E.sub.lam=tensile Young's modulus of the total fiber-metal laminate in kN/mm.sup.2, taken in the same direction as for E.sub.comp
E.sub.metal=tensile Young's modulus of the metal sheet in kN/mm.sup.2 in the combination
t.sub.metal=thickness of the metal sheet in mm in the combination
V.sub.f=fiber volume fraction of the fiber-reinforced composite layer in the combination.