Combined Effects of Sustained Loads and Wet-Dry Cycles on Durability of Glass Fiber Reinforced Polymer Composites

Table 4

Predictive equations for elastic modulus.

Exposure environment	Load level	Equation	-square
Wet-dry cycles in distilled water	0%		0.97
			0.84
	20%		0.93
			0.75
	40%		0.88
			0.57
Wet-dry cycles in saltwater	0%		0.98
			0.78
	20%		0.85
			0.34
	40%		0.98
			0.63