Dry Fabric Preforms
Dry fabric preforms are net shape, they reduce waste and improve throughput. Cost of poor quality is a key driver to switch to preforming technology and braided preforms offer better structural performance to woven or NCF style preforms. The benefit comes in the form of mechanical interlocking. As a structure is exposed to high fatigue cycles, cracks will propagate through the matrix of filament-wound or unidirectional prepreg laid-up structures. While micro-cracking will occur in a braided structure, the propagation is arrested at the intersections of the reinforcing yarns.
Dry Fabric Preforms
Preform options include:
- Fillets - Braided Fillets or "Noodles" are preformed, triangular shaped braids designed to fill resin rich areas. A&P's noodles are tailored net shape radius fillers.
- Curved Braids - Curved braids are designed to allow the axial fibers to follow the curvature of the part allowing for swept or curved shaped parts with no cuts or pleating. Braids can be designed to meet the requirements for a range of curved shapes, including those with a small degree of sweep to those with tight radii.
- Contoured Bodies of Revolution - Initially developed and put into production for composite fan cases, braided fabrics designed to accommodate part contour allow for a consistent and repeatable layup for all bodies of revolution.The contour is created as the braid forms on product specific tooling and is locked in place by the triaxial architecture.The fiber orientation, directional content and localized regions of different materials can be altered as the architecture is optimized.
All technical information and data contained herein is believed accurate and reliable. However, the accuracy and completeness of this information is not guaranteed and is subject to change without notice. A&P Technology shall not be liable for injury, loss or damage whether direct or consequential arising out of the use of the data provided herein.
While A&P Tech does not warrant the suitability for any of its products for any particular use, we are eager to assist you in selecting the right product for your application. We are staffed with experienced professionals in a variety of fields to help you take on your most vexing design, production, quality, and cost reduction challenges.