Abstract
A technique for subjecting thin walled tubular specimens to a controlled, sudden internal pressurization is described. The technique may be used as an impact test or to obtain stress-strain data over a wide range of strain rates. A shock tube is used to generate a shock pulse, which passes through the tubular specimen mounted essentially as a free body, causing it to fracture when the shock pressure is sufficiently large. It is found that the minimum shock pressure required for fracture varies linearly with tube wall thickness for four thermoplastics tested. The mode of fracture of the tubular specimens is also discussed, following studies of the fracture fragment distribution and fracture surfaces of poly(methylmethacrylate).
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Reed, P.E., Nurse, P.J. & Andrews, E.H. High strain rate testing of plastics. J Mater Sci 9, 1977–1986 (1974). https://doi.org/10.1007/BF00540546
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DOI: https://doi.org/10.1007/BF00540546