Abstract
Abstract Aluminum alloy high-speed material behavior should be comprehensively characterized for the application of a high-speed forming process. The current high-speed material testing methods are not conducive to large-scale applications because of their high cost and difficulty. In this paper, a new method for testing the high-speed performance of aluminum alloy based on electromagnetic driving was proposed. A specially designed tool was used to convert bulging deformation to tensile deformation. Two high-speed cameras and a digital image correlation (DIC) system were used to measure the stress–strain relationship of the sample. Based on the stress wave theory, a stress measurement method using two-point measurement was proposed. A numerical model was established, and the model was in good agreement with the experiment. Tests with strain rate ranging from 1000 to 3100 s−1 were conducted, and stress–strain curves were measured. The results matched those obtained with traditional test methods.
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