NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Acoustic Detection Of Loose Particles In Pressure SensorsParticle-impact-noise-detector (PIND) apparatus used in conjunction with computer program analyzing output of apparatus to detect extraneous particles trapped in pressure sensors. PIND tester essentially shaker equipped with microphone measuring noise in pressure sensor or other object being shaken. Shaker applies controlled vibration. Output of microphone recorded and expressed in terms of voltage, yielding history of noise subsequently processed by computer program. Data taken at sampling rate sufficiently high to enable identification of all impacts of particles on sensor diaphragm and on inner surfaces of sensor cavities.
Document ID
19950065434
Document Type
Other - NASA Tech Brief
Authors
Kwok, Lloyd C. (Rockwell International Corp.)
Date Acquired
August 17, 2013
Publication Date
June 1, 1995
Publication Information
Publication: NASA Tech Briefs
Volume: 19
Issue: 6
ISSN: 0145-319X
Subject Category
MECHANICS
Report/Patent Number
MFS-30015
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.