Faserwahl

Faserwahl is a German term referring to the process of selecting fiber materials for a specific application. It is used across industries such as textiles, composite materials, optical technologies and biomedical engineering to identify the fiber type that best meets required performance, manufacturability, cost and environmental criteria.

It involves compiling a set of candidate fibers and assessing properties relevant to the application. In textiles, properties include strength, elasticity, abrasion resistance, moisture management, thermal behavior, dye affinity and hand feel. In composites, emphasis lies on stiffness, strength, density, thermal stability, and compatibility with matrix materials. In optics, criteria include attenuation, bandwidth, dispersion, and connector compatibility. Processing constraints, such as spinning, weaving, extrusion, or layup, are considered, as well as yield and supply risk. Multicriteria decision analysis and life cycle assessment are common tools to support the choice.

Origin and usage: The term is common in German engineering discourse and is often treated as a design step alongside material selection. With rising sustainability goals, Faserwahl also incorporates environmental impact assessments, recyclability, and end-of-life considerations. Examples include natural fibers like flax or hemp for sustainable textiles, high-performance fibers like carbon fiber for aerospace or protective equipment, and optical fibers like silica or polymer for telecoms.