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7624641 |
Vibration sensing apparatus and washing machine having the same
Disclosed is a vibration sensing apparatus and a washing machine having the same. The vibration sensing apparatus includes a variable resistor having variable resistance values according to each...
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7617733 |
Method and apparatus for ultrasound phased array testing of bearing balls
An automated scanning system and method, utilizing specialized dual phased array ultrasonic transducers for producing and detecting Rayleigh waves in ceramic bearing balls are provided for...
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7591183 |
Gas turbine engine with a plurality of bleed valves
A health monitoring apparatus for a mechanical system includes: a microphone arranged to receive sound from the system; and a processor adapted to process the output of the microphone. The...
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7590495 |
Inverse method to calculate material properties using a non-resonant technique
A method for calculating material properties of a material includes determining a dilatational wavespeed and a shear wave speed. The dilatational wavespeed is determined by conducting vertical...
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7587057 |
Vibroacoustic emulator
The present invention is directed towards a family of vibroacoustic emulators to simulate the vibroacoustic characteristics of components of an electronic device. Specific embodiments for...
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7574918 |
Method and apparatus for detecting vibrations from a mechanical component
A system that detects vibrations from a mechanical component, such as a disk drive. The system includes an excitation rod, a membrane, and a microphone. During operation, the mechanical component...
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7559240 |
Method and device for assessing residual service life of rolling bearing
Degradation of the lubricant due to contamination of the lubricant with wear particles or moisture, which greatly affects the service life of rolling bearings, can be detected in a cost-effective...
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7555951 |
Determination of remaining useful life of gas turbine blade
A system may be used to indicate a need for replacement of a vibrating structure and includes a sensor, an indicator, and a processor. The sensor senses a frequency of vibration of the vibrating...
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7543500 |
Method and apparatus for non-destructive testing of components of gas turbine engines made of monocrystalline materials
Single-crystal components of gas turbine engines, like turbine blades, are inspected in the installed state within the engine for cracking in certain critical areas using longitudinal ultrasonic...
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7542860 |
Method and device for detecting the location of a pulse-type mechanical effect on a system part
A method and device detect a position of a pulsed mechanical effect on a plant component. An operating noise in the plant component is continuously recorded by sensors which are arranged on the...
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7509862 |
System and method for providing vibration detection in turbomachinery
A system and method for providing blade vibration analysis of a turbine is provided. Generally, the system contains a non-contacting sensor capable of determining a distance or velocity of a blade,...
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7505242 |
Method for applying a magnetic mark to a rotatable article to be positioned and corresponding device
The invention relates to a method for applying a magnetic mark to a rotatable article ( 1 ) to be positioned, to a corresponding device and to a system ( 2 ) consisting of a device for applying a...
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7503216 |
Device and method for evaluating rigidity of bearing device, device and method for manufacturing bearing device, and bearing device
An apparatus of producing bearing device having a bearing, a shaft attached to an inner ring and an outer ring attaching member attached to an outer ring. The apparatus includes a vibrating unit of...
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7500396 |
Phased array ultrasonic methods and systems for generator rotor teeth inspection
Methods and systems for inspecting a generator rotor is provided. The system includes a phased-array ultrasound transducer that includes an active face including a plurality of transducer elements...
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7500299 |
Method for introducing a deliberate mismatch on a turbomachine bladed wheel and bladed wheel with a deliberate mismatch
A method to introduce a deliberate mismatch into a turbomachine bladed wheel so as to reduce vibration amplitudes of the wheel in forced response. The method includes a step of determining an...
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7493220 |
Method and system for vibration signal processing
The present invention relates to a vibration signal processing method and system that can be used to account for situations where impact or impulse events are hidden in a normal vibration reading...
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7487679 |
Vehicle vibration analyzer
A diagnostic vibration analyzing system and method for measuring and characterizing both linear and torsional vibrations in a vehicle or a piece of industrial equipment (collectively a...
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7481116 |
Device and method for measuring fan vibration
An apparatus for measuring vibration of a fan includes a frame having an opening for enclosing a fan; a plurality of accelerometers disposed on the frame; and an elastic support for supporting the...
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7458269 |
Method for acquiring vibration data from rotating machines and portable vibration measuring device for use therein
A method for acquiring vibration data from a plurality of rotating machines of a single type by using a portable vibration measuring device having means for measuring machine vibrations, means for...
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7437935 |
Continuous chatter boundary criteria for manufactured parts
A chatter boundary system includes a measuring module, a comparison module, and a boundary module. The measuring module measures and collects samples of undulations in a manufactured part. The...
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7430916 |
Apparatus for detecting vibrations in a machine tool
Provided herein is an apparatus for detecting vibrations in a machine tool having a rotor portion ( 2 ) which is provided with tool members ( 5 ) and defines an axis of rotation ( 2 a ), the...
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7430483 |
Method and apparatus for diagnosing a mechanism
A method of analyzing variations in an indicator of the behavior of a mechanism, in which noise is extracted, and any discontinuities from an indicator in order to obtain a trend, variations in the...
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7428475 |
Method of processing oscillatory data
A method which permits the transformation of non-stationary response measurements into stationary data for analysis is provided. Many standard analysis techniques, particularly for oscillatory...
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7421349 |
Bearing fault signature detection
A device, and method, detects the presence of developing faults in rolling element bearings. Detection is accomplished by measuring the vibration of the apparatus in which the bearing is operating...
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7415363 |
High resolution torque measurement on a rotating shaft with movement compensation
An apparatus for determining the torque imposed on a rotatable shaft. The shaft has at least four paired probes, paired horizontal probes and paired vertical probes. The horizontal probes are...
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7392713 |
Monitoring system for turbomachinery
A sensing system for monitoring a property of an electrically conductive moving element of turbomachinery. The sensing system includes a sensing system housing. A magnetic core is contained within...
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7373823 |
Method for determination of the stress on blades of a turbine machine during operation and corresponding device for carrying out said method
The method serves to determine the vibrational state of turbine blades, arranged on a rotor shaft, mounted such as to rotate in a housing and/or of guide vanes. At least one electromagnetic wave is...
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7372279 |
Power generation unit condition monitor using frequency profile analysis
A power generator unit condition monitoring system can receive a frequency profile generated by a frequency generating component and can transmit the received frequency to a frequency profile...
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7357031 |
Precision sensor assembly for rotating members in a machine tool
A precision sensor assembly for rotating members in a machine tool comprises a rotor unit ( 16 ) rigidly fixed to a rotor portion ( 2 a ) of the machine tool and including a sensor ( 5 ) for...
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7331235 |
Device for indicating a beat level
A device for indicating a beat level L, the device including an analyzer which responds to a reference frequency Ω and a harmonic coefficient B to extract from an evaluation signal E a first...
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7317994 |
Method and apparatus for signal signature analysis for event detection in rotating machinery
A method for analyzing vibration including: acquiring a vibration signal; isolating a vibration signal event in the acquired signal; determining a frequency of a damped sinusoid of the vibration...
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7289919 |
Cyclic time averaging for machine monitoring
A cyclic time averaging method is directed at processing time-domain vibration data of the machine to produce an averaged time waveform over a selected cyclic time period. It is not necessary to...
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7283923 |
Method of speed measure on turbo superchargers of internal combustion engines by means of vibrations analysis and equipment to perform it
A method of determining speed of rotation of a motor is provided. The method involves collecting samples with a measuring sensor at a sampling frequency, set on the basis of mechanical vibration of...
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7255006 |
Measuring instrument
A measuring instrument is provided, to which various ultrasonic sensors can be connected in a simple way. The measuring instrument has an electronic measuring instrument unit, to which various...
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7210353 |
Multimedia feature for diagnostic instrumentation
A system and method for obtaining hearing ability related data from a subject outputs tones or sounds and monitors the subject's responses to the tones or sounds. An error condition is detected...
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7206719 |
Diagnostic method for predicting maintenance requirements in rotating equipment
This invention is a method to determine the condition of rotating equipment, namely drive spindles, to enable the timely maintenance or replacement of same. The method uses an electrical signal...
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7188527 |
Apparatus and method for vibration analysis of a machine or other article
A method and apparatus for wireless transmission of data through a communications channel between at least two local data sensors (for example automotive diagnostic data sensors or NVH sensors),...
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7174786 |
Quality testing process
A process is performed for testing the quality of a unit such as an electromotor, which has at least one mobile part, which is mobile within a given frequency range with varying frequencies and is...
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7168324 |
Vibration information transmission apparatus and vibration monitoring/analyzing system
A vibration information transmission apparatus for improving efficiency of field wiring of a vibration monitoring/analyzing system includes transmitters ( 11 - 1 to n) for converting vibration...
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7165456 |
Measuring method to determine the noise emission of an electric motor and measuring device
A measuring method to determine the noise emission of an electric motor is proposed in which the vibrational excitation of the running electric motor is measured by a laser vibrometer device and...
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7152476 |
Measurement of motions of rotating shafts using non-vibrating contact potential difference sensor
An apparatus having a non-vibrating contact potential probe. The non-vibrating contact potential probe is capable of measuring the chemical and geometrical irregularities on a rotating shaft. The...
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7131332 |
Vibroguard for machine elements
A measuring system for structure-born noise measurement of machine elements in machine housings. The measuring system is fixed to the machine housing via a lubrication hold opening. A mounting pin...
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7117744 |
Apparatus and method for detecting vibrations of the shaft assembly in an electrical machine
A method for detecting vibrations of a shaft of an electrical machine includes measuring at least one of a shaft voltage and a shaft current and analyzing the measured at least one of the shaft...
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7116095 |
Wheel rotation detecting device
A sensor unit is supported on a stationary ring which does not rotate even when it is in use, and the rotation of the rotary ring can be detected by a rotation detecting sensor held within the...
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7107850 |
Bearing vibration measuring apparatus, bearing vibration measuring method, and radial type bearing
A bearing vibration measuring apparatus is an apparatus of measuring vibration of a bearing. The bearing vibration measuring apparatus detects a vibration component generated from the bearing in a...
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7093492 |
Configurable vibration sensor
A configurable vibration sensor having a sensor circuit, an analog-to-digital converter and a processor is provided. The sensor circuit employs a vibration sensing element and a variable bandwidth...
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7075296 |
Inspection carriage for turbine blades
An inspection carriage provides for remote inspection of the Z-shroud and snubber regions of the blades of a steam turbine, while the blades remain in the turbine. The carriage includes a...
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7066028 |
Acoustic sensor for monitoring machining processes in machining tools
An acoustic sensor for monitoring machining processes in machining tools, e.g. grinding machines, includes a stationary unit, or stator ( 21 ) and a rotating unit, or rotor ( 23 ), the latter being...
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7065469 |
Manufacturing apparatus and method for predicting life of a manufacturing apparatus which uses a rotary machine
A manufacturing apparatus which includes a rotary machine, includes: a plurality of accelerometers configured to measure diagnosis time series data attached to the rotary machine at locations where...
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7065428 |
Processing machine
A processing machine, in particular a processing center, with a spindle, a tool clamping device, a converter unit with a spindle motor, at least one oscillation sensor and a balancing apparatus is...
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