Characterizing the Broadband Frequency Response of Pressure-Sensitive Paint

Characterizing the Broadband Frequency Response of Pressure-Sensitive Paint

Presenter(s)

Charles Strunc

Comments

1:20-1:40, Kennedy Union 311

Description

Pressure-Sensitive Paint (PSP) is a valuable tool for measuring pressure distributions in aerodynamic testing, but its effectiveness depends on its response time to pressure fluctuations. This research investigates the frequency response of PSP using a custom-built resonance tube designed to generate controlled pressure oscillations across a wide frequency range. The tube exploits the resonant properties of an air column to amplify pressure fluctuations produced by a speaker system, theoretically enabling precise characterization of PSP behavior at frequencies from 100 Hz up to 60 kHz. PSP pressure readings are compared to a high-precision transducer to quantify phase lag and signal attenuation, providing insight into the operational limits of different PSP formulations. The goal of extending frequency response characterization beyond the typical 10 kHz threshold offers a more comprehensive understanding of PSP performance at high frequencies. The resonance tube developed in this work establishes a permanent experimental setup for future PSP testing and optimization, supporting advancements in high-speed aerodynamic pressure measurements.

Publication Date

4-23-2025

Project Designation

Honors Thesis

Primary Advisor

Taber T. Wanstall

Primary Advisor's Department

Mechanical and Aerospace Engineering

Keywords

Stander Symposium, School of Engineering

Institutional Learning Goals

Scholarship; Practical Wisdom

Characterizing the Broadband Frequency Response of Pressure-Sensitive Paint

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