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요약정보
钨铼合金超声导波传感器设计 / Research of Tungsten-rhenium Alloy Ultrasonic Guided Wave Thermometry
Resource Type
Academic Journal
Authors
杨国权
;
魏艳龙
;
王高
;
梁海坚
;
郭晋秦
;
Yang Guoquan
;
Wei Yanlong
;
Wang Gao
;
Liang Haijian
;
Guo Jinqin
Source
山西电子技术 / Shanxi Electronic Technology
. (1):56-59
Subject
超声测温
钨铼合金
温度
时延值
Language
Chinese
ISSN
1674-4578
Online Access
Find it @ DONGA
초록
针对固体火箭航空发动机试车时燃烧室内测温需求,选取恰当的温度敏感元件材料,采用高熔点的钨铼合金波导杆作为温度敏感元件,通过对材料的物理特性、超声传播理论的分析,选用长1 m,直径1 mm,区节长度43 mm的钨铼波导杆作为超声温度传感器敏感元件.在超声激励信号频率为250 kHz,数据采集卡频率为40 MHz的条件下设计超声测温系统.通过实验室标定,验证测试系统的可靠性,测试得到20℃ ~1800℃的特征信号,通过互相关算法计算得到不同温度下的时延值,将时延值与温度进行曲线拟合,得到温度和时延值的关系式,1000℃以上,每100℃的时延值变化范围可达197 ns.
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