Application of PVDF for Thermal Shock Wave Measurement in Materials Radiated by Electron Beam

In this paper, the propagating characteristics of thermal shock waves induced by electron beam are investigated experimentally using PVDF piezoelectric gauges. Experimental results indicate: (1) As energy flux is between 90 and 210 J/cm2, peak stress of thermal shock waves in weave material and it's parted material is below 0.1 GPa, which is less than one tenth of that in LY12Al; (2) Action time in weave material is obviously widened, and it's average value is 2.6 s, which is more than 7 times of that in LY12Al. The experimental results show: (1) The wave material has excellent characteristics of dissipating and widening thermal shock waves; (2) PVDF piezoelectric gauges can be used to measure the thermal shock waves in weave material, which has long action time.