Abstract: A communications shelf configured to support at least one communications adapter panel includes first and second spaced sidewalls and a first bracket mounted at the first sidewall, the first bracket including a mounting portion fixed relative to the first sidewall and a cantilevered portion projecting away from the first bracket mounting portion and having an end, the first bracket cantilevered portion being configured to shift from a first position wherein the first bracket cantilevered portion end is spaced a first distance from the first sidewall to a second position wherein the first bracket cantilevered end is spaced a second, smaller distance, from the first sidewall under application of a force and to return to the first position when the force is discontinued, the first bracket cantilevered portion including at least one pivot pin or at least one opening forming a bearing for a pivot shaft.

Abstract: A communications shelf configured to support at least one communications adapter panel includes first and second spaced sidewalls and a first bracket mounted at the first sidewall, the first bracket including a mounting portion fixed relative to the first sidewall and a cantilevered portion projecting away from the first bracket mounting portion and having an end, the first bracket cantilevered portion being configured to shift from a first position wherein the first bracket cantilevered portion end is spaced a first distance from the first sidewall to a second position wherein the first bracket cantilevered end is spaced a second, smaller distance, from the first sidewall under application of a force and to return to the first position when the force is discontinued, the first bracket cantilevered portion including at least one pivot pin or at least one opening forming a bearing for a pivot shaft.

Abstract: A fibre reinforced polymer (FRP) composite structure incorporates a woven preform containing tows of carbon or other advanced fibres and wires of shape memory alloy (SMA). The SMA wires are capable of absorbing much larger amounts of strain energy than the conventional components of FRP composites and hence enhance the impact resistance of the structure. The woven form incorporates the SMA into the structure in an optimum manner in terms of handling and performance.

Abstract: A low mass safety helmet is provided, containing a sandwich of polymer composite materials to produce an effective means of shock mitigation to a wearer's head. The sandwich comprises an inner and outer layer of fibre reinforced polymer which encapsulates a pre-formed energy dispersive material which is typically a high impact resistant foam. Optionally, on the inside surface of the inner layer which is adjacent to the wearer's head there may also be fitted a comfort liner, manufactured from either a low density impact foam or a material or plastic lattice, to provide comfort to the wearer and protection from low energy impacts. The use of a preformed foam liner in the manufacturing of the helmet allows for accurate dimensional tolerances to be achieved, thus allowing helmets which can meet the requirements for both military and civilian use to be manufactured by mass production techniques.