Response of lead metaniobate acoustic emission sensors to gamma irradiation
Response of lead metaniobate acoustic emission sensors to gamma irradiation
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DOI：
10.1109/tns.2005.860708
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发表时间：
2005-12
影响因子：
1.8
通讯作者：
K. Holbert;S. Sankaranarayanan;S. McCready
中科院分区：
文献类型：
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作者：
K. Holbert;S. Sankaranarayanan;S. McCready
压电 (PE) 声发射 (AE) 传感器暴露在数百 kGy 的 Co-60 伽马射线下。伽马辐照传感器的重新校准显示，每 100 kGy 的灵敏度下降 8.4%。将偏铌酸铅圆盘样本（传感器铁电材料）暴露于 /spl sim/1 MGy 后发现，随着伽马剂量的增加，电容增加，PE 电压 (g/sub 33/) 系数降低。平面耦合因子 (k/sub p/) 和机械品质因数 (Q/sub m/) 略有下降。 AE 传感器还受到脉冲反应堆的核辐射。
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 /spl sim/1 MGy revealed a capacitance increase and PE voltage (g/sub 33/) coefficient decrease with gamma dose. The planar coupling factor (k/sub p/) and mechanical quality factor (Q/sub m/) exhibited small reductions. The AE sensors were also subjected to nuclear radiation from a pulse reactor.