A sleeve for protecting an elongate member, including a bus-bar of a battery pack, and method of construction thereof are provided. The sleeve includes a knit wall having a circumferentially continuous outer surface extending along a longitudinal axis between opposite open ends. The knit wall is formed at least in part by multifilament flame-resistant yarn. The multifilament flame-resistant yarn is knit to form both the knit wall, and also first ribs extending lengthwise along the circumferentially continuous outer surface or second ribs extending annularly about said circumferentially continuous outer surface. An impervious, flame-resistant coating is bonded to an outer surface of the circumferentially continuous knit wall.

A fiber preform for manufacturing a component made of composite material, the fiber preform exhibiting three-dimensional weaving and having a usable zone extending between two edge zones, the fiber preform further including at least two tracer filaments woven in the one same, weft or warp, direction and belonging to two different layers of weft filaments or warp filaments, each one being present in a distinct edge zone, the tracer filaments having a second composition different from the first composition, each tracer filament creating at least one textile marker on the surface of the fiber preform, a textile marker being created by the appearance of the tracer filament on the surface of the preform.

A fiber preform for manufacturing a component made of composite material, the fiber preform exhibiting three-dimensional weaving and having a usable zone extending between two edge zones, the fiber preform further including at least two tracer filaments woven in the one same, weft or warp, direction and belonging to two different layers of weft filaments or warp filaments, each one being present in a distinct edge zone, the tracer filaments having a second composition different from the first composition, each tracer filament creating at least one textile marker on the surface of the fiber preform, a textile marker being created by the appearance of the tracer filament on the surface of the preform.

A method of forming a ceramic matrix composite includes forming a preform by weaving a plurality of warp tows with a plurality of weft tows, weaving a plurality of fugitive yarns into a region of the preform in at least one of a warp position or weft position, and subsequently, decomposing the fugitive yarns to transform the region into a pre-weakened region, the pre-weakened region having a higher porosity than a remainder of the preform.

A method of forming a ceramic matrix composite includes forming a preform by weaving a plurality of warp tows with a plurality of weft tows, weaving a plurality of fugitive yarns into a region of the preform in at least one of a warp position or weft position, and subsequently, decomposing the fugitive yarns to transform the region into a pre-weakened region, the pre-weakened region having a higher porosity than a remainder of the preform.

A sleeve for protecting an elongate member, including a bus-bar of a battery pack, and method of construction thereof are provided. The sleeve includes a textile wall having a circumferentially continuous outer surface extending along a longitudinal axis between opposite open ends. The textile wall is formed at least in part by multifilament flame-resistant yarn. An impervious, flame-resistant coating is bonded to an outer surface of the circumferentially continuous textile wall.

A wrappable sleeve for routing and protecting an elongate member, against exposure to high temperature, abrasion, fluid ingress, and contamination, has a multilayered wall extending widthwise between opposite edges and extending lengthwise along a longitudinal axis between opposite ends. The wall includes a textile outer layer, a textile inner layer, and an intermediate layer sandwiched between the outer layer and the inner layer. The intermediate layer includes a textile intermediate layer facing the textile inner layer and a silicone-based layer facing the textile outer layer.