Strain Measuring of Composite Grid Using Digital Image Correlation

Table 3

Young’s modulus comparison of BFRP-1.

		Young’s modulus (MPa)	Error (%)
DIC	Linear regression	57800	0.00
Strain gauge	ASTM	57406	−0.69
	ACI	N.A	N.A
	Linear regression	55106	−4.89

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.