Strain Measuring of Composite Grid Using Digital Image Correlation

Table 4

Young’s modulus comparison of BFRP-2.

		Young’s modulus (MPa)	Error (%)
DIC	Linear regression	45789	0.00
Strain gauge	ASTM	44880	−2.03
	ACI	N.A	N.A
	Linear regression	44032	−3.99

The data were not available because the strain gauge broke before the test reached 50% of the maximum load, which does not provide enough data for calculation.