fibernedbrytning

Fibernedbrytning is a term used to describe the progressive degradation and eventual fracture of a fiber material under mechanical, chemical, or environmental stresses. It covers both microscopic damage accumulation and macroscopic failure and is relevant in several domains that rely on fibers, such as optical fiber networks, textiles, and fiber-reinforced composites. The process is influenced by material composition, processing history, fiber geometry, coatings or sizing, and exposure conditions.

In optical fiber technology, fibernedbrytning typically arises from tensile overload, tight bending, microbending losses, or thermal cycling that induces cracking in the glass or coating layer. Mechanical handling, packaging, and connector interfaces can introduce stress concentrations. The consequence is increased attenuation, scattering, or complete breakage, which can lead to service outages. Detection methods include optical time-domain reflectometry (OTDR), visual inspection, and microscopic analysis. Mitigation focuses on maintaining adequate bend radii, providing strain relief, using suitable protective coatings, and controlling installation and environmental conditions.

In fiber-reinforced composites and textile fibers, degradation occurs from hydrolysis, UV exposure, thermal aging, and cyclic loading. These factors can weaken the fiber-matrix interface, reduce stiffness, and ultimately cause fiber fracture or delamination in the surrounding laminate. Aging tests, microscopy, and mechanical testing are used to assess fibernedbrytning. Prevention relies on selecting durable fiber materials, proper sizing and coatings, moisture barriers, compatible resin systems, and design strategies that avoid excessive stresses.

Due to its impact on performance and durability, fibernedbrytning is a common consideration in standards, material specifications, and reliability assessments for fiber-based technology and products.