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Transducer system measures the uniaxial vibration amplitudes /deflections/ and frequency of a body subjected to mechanical vibration. The basic system is self-calibrating and provides an output which unambiguously indicates the direction as well as the magnitude of the uniaxial deflections.
Miniature pressure transducer responds to static or dynamic pressures acting against a structural surface without introducing errors caused by stresses in the structural surface. This is accomplished by a thin stainless steel pressure sensing diaphragm with an attached foil strain gage.
Miniature pressure transducers in compact water-cooled mounts are placed in hotter and more confined environments than previously possible. It quantitatively measures high frequency total pressure fluctuations resulting from rotating stall in an axial flow engine compressor.
Miniature transducers involve the use of appropriate commercial epoxy resins. Design protects the sensitive semiconductor surface from ambients and excludes an air space in the device capsule.
Quasi-static calibrations for determining quartz, piezoelectric type, pressure transducer sensitivity from 20 to 477 deg K
Simulated service life of strain gage pressure transducers
Mushroom shaped transducer for recording pressure in shock tube
Portable laser heterodyne system for broadband measurement of structural vibrations and calibration of electromechanical transducers
Closed loop capacitive pressure transducer with extended frequency response for very low pressure measurements
Systems and reliability engineering for automatic pressure transducer calibration system
Feasibility and design of helium-neon laser displacement transducer
Sensitive piezoelectric transducer with electric and mechanical noise rejection features for measuring cardiac and gross motor activity of small organisms
Calibrating motion measuring transducers at low frequencies
Performance characteristics and error reduction methods for differential pressure transducer
Modified vibration transducer calibration system for directly producing sensitivity versus frequency range plots
Resonant systems for dynamic transducer evaluations
Miniature tunnel diode transducers having operation related to controllable band gap modulation mechanism