Proceedings Article10.2514/6.2000-253
Design and Testing of Micromachined Fabry-Perot Pressure Sensors for Aerodynamic Applications
M. F. Miller,Mark G. Allen,Robert L. Bayt,Kenneth S. Breuer +3 more
- 10 Jan 2000
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TL;DR: In this paper, a micromachined atray of optical pressure sensors has been developed to address this measurement need, each sensor element in the array consists of a Fabry-Perot etalon fabricated from singlecrystal silicon.
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Abstract: Understanding the role of unsteady flow phenomenon on the performance of an airfoil requires spatiallyand temporally-resolved measurements of fluid dynamic properties at the surface. Such interactions are especially of interest to the gas turbine engine community in regard to the role of unsteady pressure oscillations in fan blade fatigue. A micromachined atray of optical pressure sensors has been developed to address this measurement need. Each sensor element in the array consists of a Fabry-Perot etalon fabricated from singlecrystal silicon. An applied pressure deflects a membrane, changing the length of the etalon and modulating its reflectivity. Illuminating the sensor array with a near-infrared diode laser and detecting the reflected light intensity with an infrared camera allows remote, simultaneous recording of the reflectance signals from the entire array of passive sensors. A sensor design meeting the requirements of the fan blade application is presented as well as test results demonstrating its performance.
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Citations
Temperature compensated diaphragm based Fiber Bragg Grating (FBG) sensor for high pressure measurement for space applications
TL;DR: A temperature compensated diaphragm-type Fiber Bragg Grating (FBG) sensor for high pressure measurement, with a maximum pressure up to 700 bar, has been developed and packaged for different applications including space as mentioned in this paper.
39
•Dissertation
3D unsteady flow in oscillating compressor cascade
Hui Yang
- 01 Jan 2004
TL;DR: In this paper, an experimental and computational study has been carried out to enhance current understanding of three dimensional (3D) cascade aeroelastic mechanisms, in which the middle blade is mechanically driven to oscillate in a 3D bending mode.
9
References
Fabry-Perot pressure sensor arrays for imaging surface pressure distributions
TL;DR: In this paper, a micromachined sensor array for mailing optical measurements of surface pressure distributions has been designed, fabricated and tested, and each sensor element in the array consists of a Fabry-Perot etalon fabricated from single-crystal silicon.
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A micromachined sensor array for optical measurements of surface pressure
M. F. Miller,M. G. Allen,E. B. Arkilic,Kenneth S. Breuer,Martin A. Schmidt +4 more
- 06 Jan 1997
TL;DR: In this article, a micromachined array of sensors for making spatially and temporally-resolved optical measurements of surface pressure has been designed, fabricated, and tested, each sensor element in the array consists of a Fabry-Perot etalon fabricated from single-crystal silicon.
4
•Book
Formulas for stress, strain, and structural matrices
Walter D. Pilkey
- 01 Jan 1994
TL;DR: In this paper, the authors present a reference source for strength of material formulas for the analysis and design of structural members and mechanical elements, including beams, bars, plates and shells with very general mechanical or thermal loading.