Measuring Dynamic Pressure in Shock Tube and Musical Instruments with WIKA A-10 Sensor*

2021 ◽  
Author(s):  
I. I. Anik’ev ◽  
V. A. Maksymyuk ◽  
E. O. Sushchenko ◽  
I. B. Fetysov
Keyword(s):  
Shock Tube ◽  
Dynamic Pressure ◽  
Musical Instruments

scholarly journals Application of shock tube in calibrating dynamic pressure transducers

2018 ◽  
Vol 1064 ◽  
pp. 012055 ◽  
Author(s):  
Laijun Yan ◽  
Yong Chen ◽  
Lihu Zhang ◽  
Xu Zhang ◽  
Xianghong Yao ◽  
...  
Keyword(s):  
Shock Tube ◽  
Dynamic Pressure ◽  
Pressure Transducers

Distribution of Flow Across the Radius of an Axisymmetric Shock Tube With Variable Cross-Sectional Area

1991 ◽  
Author(s):  
Stephen J. Schraml ◽  
Richard J. Pearson
Keyword(s):  
Shock Tube ◽  
Dynamic Pressure ◽  
Computer Code ◽  
Turbulence Modelling ◽  
Variable Cross ◽  
Cross Sectional ◽  
Flow Simulations ◽  
First Order ◽  
Series Of Experiments ◽  
Dynamic Pressure Measurements

Abstract Experiments were conducted to study the characteristics of unsteady flow in a small, axisymmetric shock tube. These experiments have been supplemented by calculational results obtained from the SHARC hydrodynamic computer code. Early calculational results indicated that a substantial gradient in flow velocity and dynamic pressure may exist along the cross-section of the shock tube. To further investigate this phenomenon, a series of experiments was performed in which dynamic pressure measurements were made at various radii in the expansion section of the shock tube. Additional calculations with the SHARC code were also performed in which turbulence modelling, artificial viscosity and second order advection were employed. The second set of calculations agree very well with the experimental results. These results indicate that the dynamic pressure is nearly constant across the radius of the shock tube. This contradicts the early computational results which were performed with first order advection and without turbulence modelling. As a result of these findings, it was concluded that turbulence modelling was necessary to obtain accurate shock tube flow simulations.

scholarly journals Shock tube-based calibration installation for dynamic pressure transducers and performance testing

2019 ◽  
Vol 2019 (23) ◽  
pp. 8577-8582
Author(s):  
Laijun Yan ◽  
Xu Zhang ◽  
Lihu Zhang ◽  
Xianghong Yao ◽  
Xinhua Qi ◽  
...  
Keyword(s):  
Shock Tube ◽  
Dynamic Pressure ◽  
Performance Testing ◽  
Pressure Transducers ◽  
And Performance

Experimental Characterization of a Remoting System for Dynamic Pressure Sensors

2005 ◽  
Author(s):  
Giovanni Ferrara ◽  
Lorenzo Ferrari ◽  
Gabriele Sonni
Keyword(s):  
Shock Tube ◽  
Combustion Chamber ◽  
Operating Temperature ◽  
Dynamic Pressure ◽  
Pressure Sensors ◽  
Measurement Point ◽  
Experimental Characterization ◽  
Temperature Capability ◽  
Lower Operating Temperature

Concerning measurements with dynamic pressure sensors, one of the most interesting aspects is the influence of a remoting system interposed between the sensor and the measurement point. This mounting system, once correctly characterized, allows one to use the same sensor for different measurement points, reducing the total number of sensors used. In addition, in all the applications involving high temperatures (e.g. combustion chamber), a remoting system allows the use of cheaper dynamic pressure sensors with lower operating temperature capability. A remoting system for dynamic pressure sensors made up by a remoting duct, between the sensor and the measurement point, followed by a damping duct has been characterized for different tube lengths. Tests were carried out with two kinds of sources: a diaphragm-less shock tube for the first set of tests and an acoustic speaker for the second. Results are here reported and commented.

An Experimental Frequency Response Characterization of MEMS Piezoresistive Pressure Transducers

2014 ◽  
Author(s):  
Adam M. Hurst ◽  
Timothy R. Olsen ◽  
Scott Goodman ◽  
Joe VanDeWeert ◽  
Tonghuo Shang
Keyword(s):  
Transfer Function ◽  
Shock Tube ◽  
Frequency Response ◽  
Microelectromechanical Systems ◽  
Dynamic Pressure ◽  
Measured Signal ◽  
Test Setup ◽  
Pressure Transducers ◽  
Sensor Structure ◽  
Natural Resonance

Silicon micro-machined piezoresistive based pressure transducers are often used to make high frequency dynamic pressure measurements. The spectral or frequency response of these microelectromechanical systems (MEMS) is a function of the natural resonance of the sensor structure, sensor size, sensor packaging, signal conditioning and transducer mounting in the desired measurement location. The advancement of MEMS micro-fabrication, which has reduced sensor size dramatically, and the high elastic modulus of silicon have allowed the natural resonance of these devices to range from 100kHz to several MHz [1]. As a result, packaging and mounting at the point of measurement are the major factors that determine the flat (0dB) frequency response envelope of the transducer, which is typically quantified by a transfer function. The transfer function quantifies the difference both in magnitude and phase between an input signal and a measured signal in the frequency domain. The dynamic response of pressure transducers has historically been estimated via a unit step input in pressure created through a shock tube test that excites the high natural resonance of the chip. Unfortunately, these tests are less effective at accurately quantifying the frequency response of the transducer in the domain of greatest interest (DC-20kHz), specifically the bandwidth over which the response is flat (0dB). In this work, we present a test methodology using a speaker-driven dynamic pressure calibration setup for experimentally determining the transfer function of a pressure transducer from 1–50kHz. The test setup is validated using capacitive-based microphones with claimed flat spectral characteristics well beyond 50kHz. Using this test setup, we present experimental spectral response results for low-pressure miniature MEMS piezoresistive pressure transducers over the frequency range of 1–50kHz and qualitatively compare these results to traditional shock tube tests. The transducers characterized have been manufactured with several different standard sizes and front-end configurations.

scholarly journals Evaluation of Shock Tube Retrofitted with Fast-Opening Valve for Dynamic Pressure Calibration

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4470
Author(s):  
Eynas Amer ◽  
Mikolaj Wozniak ◽  
Gustav Jönsson ◽  
Fredrik Arrhén
Keyword(s):  
Shock Wave ◽  
Shock Tube ◽  
Dynamic Pressure ◽  
Pressure Measurements ◽  
Pressure Calibration ◽  
Nominal Pressure ◽  
Shock Wave Formation ◽  
Dynamic Pressure Measurements ◽  
Calibration Laboratories ◽  
Double Diaphragms

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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