Mechanical Properties of Fast-Growing Poplar Reinforced with Carbon Fiber

Table 4

Mechanical parameters of specimens with different fiber position.

Specimen	fa (MPa)	S (standard deviation)	fk (MPa)	Ea (MPa)	Δa (mm)
A5	31.59	2.15	27.07	1291	5.73
B1	30.46	4.79	20.38	1351	5.58
B2	31.62	1.62	28.21	1428	6.25