Fiber properties
Reinforcement glass fiber

Glass fiber properties measurement is a topic that requires preliminary comments. Some properties are not directly measurable on glass fiber, but on bulk glass, and consequently do not take into account the various thermal transformations to transform a glass melt to fiber. Here, measured values should therefore be considered with caution. Other properties measured on glass filaments can also vary depending on the filament diameter. Finally, other properties also depend on manufacturing parameters, sizing composition (§  3.3.2