|
|
The Dual-chamber Negative Pressure Method for Dynamic Pressure Calibration of the Shock Tube |
YANG Jun1,LI Cheng1,WANG Wei2,FAN Jing1 |
1.Changcheng Institute of Metrology and Measurement, Beijing 100095, China
2.China Gas Turbine Establishment, Jiangyou, Sichuan 621703, China |
|
|
Abstract A dual-chamber negative pressure method(DCNPM) with shock tube was investigated to get micro step pressure. Using CIMM’s 100 mm shock tube and other additional installations, several absolute pressure sensors and micro pressure sensors were tested with DCNPM. The test data indicate that less than 2 kPa step pressure can be get in shock tube with DCNPM and thin paper film, and the step pressure parameters like rise time and flat duration comform to the national metrology regulation. Thereby the technical capability of the existing shock tube is extended. The sensors test results with different static pressure and pressure amplitude were compared, and the resonant frequency and damping ratio increased with the pressure. So it is worth to pay attention in practical calibration and test.
|
|
|
|
|
|
[1]韩惠霖.激波管的发展与应用[J].浙江大学学报,1980, 9(3):170-188.
[2]ISA-37.16.01-2002,A Guide for the Dynamic Calibration of Pressure Transducers[S].
[3]国家质量监督检验检疫总局. JJG624-2005动态压力传感器[S].2006.
[4]Jan Hjelmgren. Dynamic Measurement of Pressure-A Literature Survey[R], SP REPORT 2002, 34:49-53.
[5]Damion J P. Means of Dynamic Calibration for Pressure Transducers[J]. Metrologia, 1993/94, 30: 743-746.
[6]GOST 8.433-81, State system for ensuring the uniformity of measurements. State special standard and state hierarchy diagram for variable pressure measuring instruments in the range of 1×102-1×106 Pa for frequencies of 5×10-2 ~1×104 Hz, durations from 1×10-5~10 s under constant pressure up to 5×106 Pa[S].
[7]Jim L, Dan C. Dynamic Pressure Calibration[R]. Technical Note TN-15, PCB Piezotronics, Inc. USA. 2005.
[8]林建民,魏以嘉,张大友.探索在激波管中获得低强度激波的方法[C ]//第十一届全国激波与激波管学术会议论文集.绵阳:中国力学学会激波与激波管专业委员会,2004.
[9]张葭,何天祥,赵小亮.使用“双腔负压法”实现激波管高声压级校准[J].航空计测技术,1998,18(6):6-8.
[10]张京平.存在衰减和真实气体效应的激波管激波速度的计算[J].计量学报,2000,21(1):45-50.
[11]黄俊钦.测试系统动力学[M].北京:国防工业出版社,1996.
[12]杨军,李纲,李程,等. 阶跃信号测量中的上升时间计算[J]. 仪器仪表学报,2009,30(6):169-173. |
|
|
|