PSI - Issue 33

Yu. Matvienko et al. / Procedia Structural Integrity 33 (2021) 491–497 Author name / Structural Integrity Procedia 00 (2019) 000–000

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a Δ �� = –17.0

b Δ �� = –16.5

c Δ �� = –20.0 d Δ �� = –22.0 Fig. 1. Interference fringe patterns recorded on Side A (a, b) and Side B (c, d) of SRS-0 specimen ( N =0) for u (a, c) and v (b, d) in-plane displacement components.

a Δ �� = –17.0

b Δ �� = –16.5

c Δ �� = –20.0 d Δ �� = –22.0 Fig. 2. Interference fringe patterns recorded on Side A (a, b) and Side B (c, d) of SRS-A4 specimen ( N =8400 cycles) for u (a, c) and v (b, d) in plane displacement components. To obtain initial experimental data, an optical system of combined interferometer is used. This arrangement provides a way of subsequent recording interference fringe patterns inherent in the ESPI technique on opposite