Comments on the Validity of Test Conditions for Kolsky Bar Testing of Elastic-Brittle Materials

Analytic solutions for the time it takes an elastic Kolsky bar sample to achieve stress equilibrium and constant-strain-rate are presented. Using these solutions simple analytic criterion are derived that can be used either a posteriori to check the validity of a conducted experiment or a proiri to provide envelopes of validity under which tests could be conducted correctly on elastic-brittle materials.