Study on shock pressure properties of porous iron

Aim To study effects of porosities and particle sizes on shock pressures caused by explosion load in porous iron. Methods Using the strain compensated manganin gage to measure shock pressures in porous iron. Results Initial shock pressures in porous iron will decrease with increasing of porosity, and after porosity is larger than 0.35, shock propagating attenuations will become slow gradually with increasing of porosity. While particle size is larger than 250 mesh, initial shock pressures will decrease notably with decreasing of particle size, and after particle size is smaller than 250 mesh, shock propagating attenuations will become slow gradually with decreasing of particle size. Conclusion Shock pressure properties of porous iron are dependent on comprehensive effects of porosities or particle sizes on both initial shock pressures and shock propagating attenuations.