Dynamic fracture analysis by moiré interferometry

Review of experimental techniques for high rate deformation and shock studies

“…e interferometry. Applications include visualisation of stress waves in graphite epoxy composites [303] and dynamic fracture studies [302]. Intermediate sensitivities (5-10 mm) can be achieved by high-resolution moir!…”

Axial Multiple Crack Propagation and Crack Kinking Criteria in Pressurized Fuselage

“…Previous experimental results by Arakawa et al [13] involving crack propagation in thin aluminum fracture specimens recorded maximum crack velocities of the order of 40m/s for the brittle 7075-T6 aluminum alloys. For the more ductile 2024-T3 the corresponding maximum crack velocity is estimated to be lower than 20m/s.…”

“…(1), the crack kinking angle computed by Eq. (4) incorporates the second order term and represents a mixed mode extension of the crack kinking criterion of Streit, et al [13] and Ramulu, et al [11]. As shown in Fig.…”

On the Use of Digital Image Correlation for the Analysis of the Dynamic Behavior of Materials

“…Moiré interferometry was then introduced [9,10]. Although its practical use was more difficult than photoelasticity [11], some applications were shown in the 90s [11,12,13]. In contrast to photoelasticity, this technique as well as the following ones, deal with the actual material of interest and not a substitute chosen for its birefringence properties.…”