Abstract
Piezoelectric (PE) acoustic emission (AE) sensors were exposed to hundreds of kGy from Co-60 gamma rays. Recalibration of gamma-irradiated sensors showed a sensitivity decline of 8.4% per 100 kGy. Exposure of lead metaniobate disc specimens, the sensor ferroelectric material, to ∼1 MGy revealed a capacitance increase and PE voltage (g33) coefficient decrease with gamma dose. The planar coupling factor (kp) and mechanical quality factor (Qm) exhibited small reductions. The AE sensors were also subjected to nuclear radiation from a pulse reactor.
Original language | English (US) |
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Pages (from-to) | 2583-2590 |
Number of pages | 8 |
Journal | IEEE Transactions on Nuclear Science |
Volume | 52 |
Issue number | 6 |
DOIs | |
State | Published - Dec 2005 |
Keywords
- Gamma radiation
- Lead metaniobate
- Piezoelectric transducers
- Pulse reactor testing
- Radiation effects
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Nuclear Energy and Engineering
- Electrical and Electronic Engineering