Lightweight glass fiber-resin composites [studied] by destructive and nondestructive methods

Study of the relation between the structure and properties of lightweight glass wool-phenolformaldehyde resin composites measured the composite strength and elasticity properties. The elasticity properties of the composite after compression decrease as a function of time and degree of compression as a result of static fatigue of the glass fibers, meaning that their strength depends on the length of time that a load is applied or on the loading rate.