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Abstract
A test is described in which a cylindrical powder pellet is sandwiched between two steel rods (input and output bar), aligned linearly. The free end of the input bar is struck by a small projectile, propagating a low intensity, short duration, compressive stress pulse across the specimen to the free end of the output bar. This pulse is then reflected, causing the pellet to be loaded in tension. The strain pulses in the two bars are used to determine the elastic Young's modulus in tension and compression and the tensile strength of the pellet. Details are given of the apparatus used and the theory for calculation of the specimen stress and strain. The results are found to compare well with both uniaxial tension and diametral ‘Brazilian’ tests. The method is believed to be applicable to a wide range of powder compacts and porous materials. PM/0503