Textile Preforming

Abstract

Textile preforming is a fiber placement method utilizing textile processes prior to the formation of composite structures. Textile preforms are the structural backbone of a composite analogous to the structural steel framework in a building. Starting with linear assemblies of fibers in continuous and/or discrete form, these micro-fibrous structures can be organized into one-, two- or three-dimensional structures by means of twisting, interlacing, intertwining or interlooping. By proper selection of the geometry of the fibrous structures and architecture and the method of placement or geometric arrangement of the fibers, the structural performance of the resulting composite can be tailored. These fiber placement methods create textile preforms which possess a wide spectrum of pore geometries and pore distribution; a broad range of structural integrity and fiber volume fraction; and fiber orientation distribution as well as a wide selection of formed shape and net shape capability.