Abstract
Dynamic photoelastic and moiré techniques were used to study the incident, reflected and refracted waves in a layered model. The model, consisting of two birefringent layers with an impedance ratio of approximately 2∶1, was subjected to point-source explosive loading in the low-impedance medium. The isochromatic and moiré-fringe patterns were photographed with a Cranz-Schardin multiplespark camera operating at a rate of 200,000 frames per second. Propagation and attenuation characteristics of waves in both layers were studied. The formation of head-waves at the interface was clearly evident. Stress determinations were made in some instances using photoelastic and moiré data.
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Daniel, I.M., Marino, R.L. Wave propagation in layered model due to point-source loading in low-impedance medium. Experimental Mechanics 11, 210–216 (1971). https://doi.org/10.1007/BF02324217
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DOI: https://doi.org/10.1007/BF02324217