Design and evaluation process of a robust pressure sensor for measurements in boundary layers of liquid fluids

Beutel, Tobias; Leester-Schädel, Monika; Büttgenbach, S.

doi:10.1007/s00542-011-1404-x

Cited by 9 publications

(4 citation statements)

References 7 publications

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“…However, the intrusive and fragile nature of most of the sensors not only changes the streaming flow but also susceptible to damage due to exposure to the incoming flow. To overcome this issue, Beutel et al (2012) introduced fiber material embedded piezoresistive pressure sensor for ensuring extremely flush mounting in the wall for the first time. The novel approach, in this case, was the integration of sensor and associated subsystems directly into the wall unlike other MEMS sensors reported earlier in literature.…”

Section: Aerospace Applicationsmentioning

confidence: 99%

A review of principles of MEMS pressure sensing with its aerospace applications

Javed

Mansoor

Shah

2019

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Purpose Pressure, being one of the key variables investigated in scientific and engineering research, requires critical and accurate measurement techniques. With the advancements in materials and machining technologies, there is a large leap in the measurement techniques including the development of micro electromechanical systems (MEMS) sensors. These sensors are one to two orders smaller in magnitude than traditional sensors and combine electrical and mechanical components that are fabricated using integrated circuit batch-processing technologies. MEMS are finding enormous applications in many industrial fields ranging from medical to automotive, communication to electronics, chemical to aviation and many more with a potential market of billions of dollars. MEMS pressure sensors are now widely used devices owing to their intrinsic properties of small size, light weight, low cost, ease of batch fabrication and integration with an electronic circuit. This paper aims to identify and analyze the common pressure sensing techniques and discuss their uses and advantages. As per our understanding, usage of MEMS pressure sensors in the aerospace industry is quite limited due to cost constraints and indirect measurement approaches owing to the inability to locate sensors in harsh environments. The purpose of this study is to summarize the published literature for application of MEMS pressure sensors in the said field. Five broad application areas have been investigated including: propulsion/turbomachinery applications, turbulent flow diagnosis, experimentalaerodynamics, micro-flow control and unmanned aerial vehicle (UAV)/micro aerial vehicle (MAV) applications. Design/methodology/approach The first part of the paper deals with an introduction to MEMS pressure sensors and mathematical relations for its fabrication. The second part covers pressure sensing principles followed by the application of MEMS pressure sensors in five major fields of aerospace industry. Findings In this paper, various pressure sensing principles in MEMS and applications of MEMS technology in the aerospace industry have been reviewed. Five application fields have been investigated including: Propulsion/Turbomachinery applications, turbulent flow diagnosis, experimental aerodynamics, micro-flow control and UAV/MAV applications. Applications of MEMS sensors in the aerospace industry are quite limited due to requirements of very high accuracy, high reliability and harsh environment survivability. However, the potential for growth of this technology is foreseen due to inherent features of MEMS sensors’ being light weight, low cost, ease of batch fabrication and capability of integration with electric circuits. All these advantages are very relevant to the aerospace industry. This work is an endeavor to present a comprehensive review of such MEMS pressure sensors, which are used in the aerospace industry and have been reported in recent literature. Originality/value As per the author’s understanding, usage of MEMS pressure sensors in the aerospace industry is quite limited due to cost constraints and indirect measurement approaches owing to the inability to locate sensors in harsh environments. Present work is a prime effort in summarizing the published literature for application of MEMS pressure sensors in the said field. Five broad application areas have been investigated including: propulsion/turbomachinery applications, turbulent flow diagnosis, experimental aerodynamics, micro-flow control and UAV/MAV applications.

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Section: Aerospace Applicationsmentioning

confidence: 99%

A review of principles of MEMS pressure sensing with its aerospace applications

Javed

Mansoor

Shah

2019

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“…Each sensor system is statically calibrated after embedding in a temperature-pressure reference chamber as described earlier [25]. Prior to the calibration a fast pre-calibration is performed for setting the PGA309 in the desired range (for a fixed temperature).…”

Section: Embedded Pressure Sensormentioning

confidence: 99%

Waterproof sensor system for simultaneous pressure and hot-film flow measurements

Schwerter

Leester-Schädel

Dietzel

2017

Sensors and Actuators A: Physical

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For simultaneous measurement of pressure and near surface flow conditions allowing indirect determination of wall shear stress in experimental water tunnel environment an integrated hybrid sensor system has been developed. In contrast to known approaches, which are limited to the use in gas atmosphere due to protruding electrical and fragile parts, our sensor system is waterproof shielded and embedded in epoxy resin. Furthermore an amplification circuit for the pressure signal based on a programmable gain amplifier is integrated in direct vicinity to the pressure sensor in order to minimize noise by electromagnetic disturbances. Also sensor systems with on-board digitalization of the pressure signal for direct digital read-out were realized. We present all aspects of system assembly and embedding to one waterproof module. Furthermore, read-out strategies as well as sensor test results in air and water are shown and watertightness is confirmed.

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“…The resistors are connected as a Wheatstone bridge in order to reach high sensitivity when decreasing and increasing resistances placed at opposing locations are used. Further information on the sensor can be found in [6].…”

Section: B Sensor Designmentioning

confidence: 99%

MEMS pressure sensors embedded into fiber composite airfoils

Schwerter

Leester-Schädel

Büttgenbach

et al. 2014

IEEE SENSORS 2014 Proceedings

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The paper describes the integration of pressure sensors into fiber composite in order to obtain flow sensing airfoils to be used in future aircrafts. First, the sensor design and working principle is described, followed by an embedding procedure for damage-free integration. Here the sensors are faced to stresses by vacuum and curing during the embedding process into fiber-reinforced plastic. The mechanical characteristics and the influence of external mechanical stresses on the integrated sensor are further investigated. Finally, a sensor design unsusceptible to external mechanical stresses parallel to the surface of the airfoil is proposed and verified by tensile stress tests.

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Design and evaluation process of a robust pressure sensor for measurements in boundary layers of liquid fluids

Cited by 9 publications

References 7 publications

A review of principles of MEMS pressure sensing with its aerospace applications

A review of principles of MEMS pressure sensing with its aerospace applications

Waterproof sensor system for simultaneous pressure and hot-film flow measurements

MEMS pressure sensors embedded into fiber composite airfoils

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