Electromagnetic radiation detection in 0-3 cement-PZT composite under impact loading

Abstract

Electromagnetic responses of cement–PZT composites under impact loading have been presented in this work. The values of density, dielectric constant and EMR voltage increase while that of porosity and loss tangent decrease with increase in PZT content. Filler (PZT) concentration dependent dielectric constant as well as loss tangent data shows exponential variation. The emitted EMR voltage as well as average EMR energy release rate for 21 cm height of impact increase from 1.03 V to 2.24 V and 0.10092 V²-sec/sec to 0.4635 V²-sec/sec respectively with the increasing PZT content (5% to 40%). The EMR responses of the composites were also found to be proportional to the height of impact in all the composites tested, indicating that the measurement of EMR responses from the cement based composites may be useful for deformation monitoring.

Keywords:

• Cement–PZT composite
• dielectric properties
• electromagnetic radiation
• impact