Wireless Shear-Stress Sensor Array Measurement Technology

Sponsored by NASA-Langley Research Center

Last Modified: Aug 29th 2008

Sensor measurment concept

Investigators

Student Research Assistants

Description

Objectives

To develop wireless wall shear-stress sensor array measurement technology to provide benchmark three-dimensional, time-resolved, fluctuating skin friction data to aid turbulence model development for flow separation

Benefits

Provides measurement capabilities for multiple shear stress sensors with only minimal cabling requirements for the antenna.

Goals

Micromachining technologies will be used to create passive (batteryless), wireless shear-stress sensors.
Arrays of these low-profile sensors will be inlayed in thin, flexible substrates that will conformably adhere to the curved surface of an airframe.
Using an antenna embedded in the substrate, the time-resolved shear-stress from all the sensors will be interrogated simultaneously.

Publications

Chandrasekharan, V., Sells, J., Meloy, J., Arnold, D.P., and Sheplak, M., "A Metal-On-Silicon Differential Capacitive Shear Stress Sensor," Transducers 2009, Tech. Dig. 15th Int. Conf. Solid-State Sensors, Actuators, and Microsystems, Denver, CO , June 2009. (Abstract)

Chandrasekharan, V., Sells, J., Arnold, D.P., and Sheplak, M., "Characterization of a MEMS-Based Floating Element Shear Stress Sensor," AIAA Paper 2009-316, 47th AIAA Aerospace Sciences Meeting and Exhibit, January 2009. (Abstract)

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Wireless Shear-Stress Sensor Array Measurement Technology Sponsored by NASA-Langley Research Center Last Modified: Aug 29th 2008 Sensor measurment concept Investigators Mark Sheplak (PI) David Arnold Henry Zmuda Student Research Assistants Vijay Chandrasekharan Changzhan Gu Jeremy Sells Description Objectives To develop wireless wall shear-stress sensor array measurement technology to provide benchmark three-dimensional, time-resolved, fluctuating skin friction data to aid turbulence model development for flow separation Benefits Provides measurement capabilities for multiple shear stress sensors with only minimal cabling requirements for the antenna. Goals Micromachining technologies will be used to create passive (batteryless), wireless shear-stress sensors. Arrays of these low-profile sensors will be inlayed in thin, flexible substrates that will conformably adhere to the curved surface of an airframe. Using an antenna embedded in the substrate, the time-resolved shear-stress from all the sensors will be interrogated simultaneously. Publications Chandrasekharan, V., Sells, J., Meloy, J., Arnold, D.P., and Sheplak, M., "A Metal-On-Silicon Differential Capacitive Shear Stress Sensor," Transducers 2009, Tech. Dig. 15th Int. Conf. Solid-State Sensors, Actuators, and Microsystems, Denver, CO , June 2009. (Abstract) Chandrasekharan, V., Sells, J., Arnold, D.P., and Sheplak, M., "Characterization of a MEMS-Based Floating Element Shear Stress Sensor," AIAA Paper 2009-316, 47th AIAA Aerospace Sciences Meeting and Exhibit, January 2009. (Abstract)