METHOD OF PRESSURE MEASUREMENT Russian patent published in 2011 - IPC G01L9/00 

FIELD: physics.

SUBSTANCE: capacitance sensitive elements are glued on surface of two glasses of glass block. Membrane of said elements is directed toward explosion wave propagation. Interference signal are separated from useful signal. Channel conversion factors are determined. Measurement graduation is used to define expected excess pressure. Said excess pressure is converted into electric signal by capacitance sensitive elements. Signal is matched by charge amplifier, normalised in normalising voltage amplifier and recorded. Selected type of glass block is used to define charge weight of explosion wave source. Excess pressure P_ex is selected. Said excess pressure is used to select capacitance sensitive elements to be glued on glass surface on compartment bottom. Said excess pressure is used to select type of capacitance sensitive elements to be located inside chamber accumulating glass fragments. Explosion wave at distance R is attenuated. Explosion wave source selected along outer diameter D of shell, three shock wave propagation zones are selected: near, medium and far. Location of capacitance sensitive elements in said zones is determined. To destruct glass block, said block is located in medium zone. Distribution of shock wave pressure inside compartment and at samples is defined. Behind glass block in fragment accumulation chamber, dominating area in shock wave flow is selected.

EFFECT: higher accuracy of measurement, determination of shock wave dynamic pressure.

2 dwg