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Magnetically tunable resonance frequency beam utilizing a stress-sensitive film

Patent ·
OSTI ID:874100
 [1];  [2];  [3]
  1. Kingston, TN
  2. Knoxville, TN
  3. Oak Ridge, TN
+ Show Author Affiliations

Methods and apparatus for detecting particular frequencies of vibration utilize a magnetically-tunable beam element having a stress-sensitive coating and means for providing magnetic force to controllably deflect the beam element thereby changing its stiffness and its resonance frequency. It is then determined from the response of the magnetically-tunable beam element to the vibration to which the beam is exposed whether or not a particular frequency or frequencies of vibration are detected.

Research Organization:
LOCKHEED MARTIN ENERGY RES COR
DOE Contract Number:
AC05-96OR22464
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Number(s):
US 6311557
OSTI ID:
874100
Country of Publication:
United States
Language:
English

References (1)

Adsorption‐induced surface stress and its effects on resonance frequency of microcantilevers journal April 1995

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Related Subjects

/73/324/
apparatus
beam
changing
coating
controllably
deflect
detected
detecting
determined
element
exposed
film
force
frequencies
frequency
magnetic
magnetically
magnetically-tunable
means
methods
providing
resonance
resonance frequency
response
sensitive film
stiffness
stress-sensitive
tunable
utilize
utilizing
vibration