校准
休克(循环)
动压
重复性
冲击管
振膜(声学)
计量学
可追溯性
冲击波
管(容器)
压力测量
动态试验
计算机科学
声学
光学
机械工程
工程类
物理
结构工程
航空航天工程
数学
振动
量子力学
内科学
软件工程
统计
医学
作者
Eynas Amer,Mikołaj P. Woźniak,G. Jönsson,Fredrik Arrhén
出处
期刊:Sensors
[MDPI AG]
日期:2021-06-29
卷期号:21 (13): 4470-4470
被引量:15
摘要
Accurate dynamic pressure measurements are increasingly important. While traceability is lacking, several National Metrology Institutes (NMIs) and calibration laboratories are currently establishing calibration capacities. Shock tubes generating pressure steps with rise times below 1 μs are highly suitable as standards for dynamic pressures in gas. In this work, we present the results from applying a fast-opening valve (FOV) to a shock tube designed for dynamic pressure measurements. We compare the performance of the shock tube when operated with conventional single and double diaphragms and when operated using an FOV. Different aspects are addressed: shock-wave formation, repeatability in amplitude of the realized pressure steps, the assessment of the required driver pressure for realizing nominal pressure steps, and economy. The results show that using the FOV has many advantages compared to the diaphragm: better repeatability, eight times faster to operate, and enables automation of the test sequences.
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