Piezoresistivity of Manganin

The change in resistance of a class of alloys called Manganin has been measured as a function of peak shock‐wave pressure up to 190 kbar. The pressures are obtained from explosively generated plane shock waves in a material of known Hugoniot equation of state. The Hugoniot of Manganin, which has been measured up to 359 kbar, is used with the resistance measurements to calculate the change in resistivity with volume. The results are compared with previous measurements.