NDLI: Pressure Sensitive Paint for Acoustic Pressure Fluctuations

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Chris, A. Virgin Bruce, F. Carroll Louis, N. Cattafesta Kirk, S. Schanze Mohammet, E. Kose
Copyright Year	2005
Abstract	Full-field luminescent pressure sensors are commonly referred to as Pressure Sensitive Paint (PSP). In this paper, the suitability of PSP for the detection of acoustic pressure fluctuations is evaluated. Single point measurements utilizing a photomultiplier tube are performed in an acoustic plane wave tube capable of generating pressure levels up to 164 dB SPL for frequencies from 500 to 2100 Hz. The PSP coating employed is platinum meso-tetra(pentafluorophenyl) porphrine [PtTFPP] in poly(tBS-co-TFEM). Comparisons between a 1/4″ Bru¨el & Kjær type 4138 condenser microphone and the PSP detection system are used to evaluate the PSP system in both the time and frequency domains. The frequency response and linearity of the optical system is established and the high frequency attenuation is characterized. Experimental characterization indicates a dc sensitivity of 5.68 μV/Pa, a noise floor of 127 dB SPL and a frequency response of −2.5 dB/octave and a 45° phase delay. PSP shows the ability to avoid saturation and nonlinearities at higher sound pressure levels.
Sponsorship	Noise Control and Acoustics Division
Starting Page	297
Ending Page	307
Page Count	11
File Format	PDF
ISBN	0791842258
DOI	10.1115/IMECE2005-81831
e-ISBN	0791837696
Volume Number	Noise Control and Acoustics
Conference Proceedings	ASME 2005 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2005-11-05
Publisher Place	Orlando, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Pressure sensors Condensers (steam plant) Acoustics Coatings Pressure Waves Sound pressure Microphones Noise (sound) Platinum Fluctuations (physics) Experimental characterization Frequency response Delays Paints
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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