International Journal of Concrete Structures and Materials

Table 4 Measurement settings for the DIC tests.

From: The Use of Advanced Optical Measurement Methods for the Mechanical Analysis of Shear Deficient Prestressed Concrete Members

	Unit	B103	B104	B105	B106	B107	B108	B109
Subset	(px)	27	27	27	27	27	27	27
Step	(px)	3	3	3	3	3	3	3
Measurement points	(−)	68327	67482	67819	70290	68843	68868	75864
Temporal resolution	(fps)	2	2	2	2	2	2	2
Camera distance	(mm)	2700	2700	2700	2700	2700	2700	2700
Interpolation	(−)	b.c.s.\(^{\dag }\)	b.c.s.	b.c.s.	b.c.s.	b.c.s.	b.c.s.	b.c.s.
Displacement
Spatial resolution^a	(mm)	31.2	30.9	29.9	29.5	29.9	30.8	28.4
In-plane resolution\(^{\dag }\)	(mm)	0.018	0.019	0.034	0.027	0.020	0.021	0.023
Out-of-plane resolution\(^{\ddag }\)	(mm)	0.125	0.120	0.165	0.167	0.147	0.149	0.152

^†Bicubic spline.
^‡Maximum mean value of the standard deviation of the in-plane horizontal and vertical displacement; mean value of the standard deviation of the out-of-plane displacement.
^aPhysical dimension of subset.

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