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http://dx.doi.org/10.7234/composres.2022.35.3.196

Study on the Split Hopkinson Pressure Bar Apparatus for Measuring High-strain Rate Tensile Properties of Plastic Material  

Han, In-Soo (Hyundai & Kia Corporate Research & Development Division)
Lee, Se-Min (Department of Mechanical Convergence Engineering, Hanyang University)
Kim, Kyu-Won (Department of Mechanical Convergence Engineering, Hanyang University)
Kim, Hak-Sung (Hyundai & Kia Corporate Research & Development Division)
Publication Information
Composites Research / v.35, no.3, 2022 , pp. 196-200 More about this Journal
Abstract
Split Hopkinson Pressure Bar (SHPB) is a general test equipment for measuring the mechanical properties of high modulus metal and composite materials at high strain rate. However, for the soft plastic material, it is difficult to hold the specimen and achieve dynamic stress equilibrium due to the weak transmitted signals. In this study, SHPB test apparatus were designed to measure accurately the high strain rate stress-strain curve of the soft plastic materials by changing the incident bar materials and the shape of the specimen holder parts. In addition, to verify the high strain-rate tensile strain data obtained from SHPB, the strain distribution of the specimen was measured and analyzed with a high-speed camera and the digital image correlation (DIC), which was compared with the strain history measured from SHPB.
Keywords
Split Hopkinson pressure bar; Digital image correlation;
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