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| Number | Title | Issue Date |
| 7832274 | System and method for pneumatic scour detection An apparatus for detecting scour conditions adjacent a pier has a pipe with a plurality of holes formed through a wall of the pipes in spaced relation to each other along a length of the pipe, a plurality of porous plugs affixed respectively in the plurality of hole... | 11/16/2010 |
| 7376519 | Method for reducing the computation resources required for determining damage in structural health management system A method for determining damage in a structural health monitoring system comprising a plurality of sensors distributed across a structure is disclosed. The method includes decomposing the plurality of sensors into a plurality of sub-arrays. Each sub-array is associa... | 05/20/2008 |
| 7373260 | Sensor infrastructure A device for use in detecting an event in a structure includes a sensor encapsulation, the encapsulation containing a sensor, an actuator positioned substantially in-plane to the sensor within the housing and a printed circuit board in communication with at least on... | 05/13/2008 |
| 7322244 | Interrogation system for active monitoring of structural conditions Systems for monitoring structural health conditions of objects. Each system includes patch sensors attached to an object, wherein each patch sensor is capable of generating a wave upon receipt of an actuator signal and developing a sensor signal in response to the w... | 01/29/2008 |
| 7281428 | Diagnostic system for monitoring structural health conditions Interrogation systems for monitoring structural health conditions. An interrogation system includes at least one wave generator for generating a wave signal and optical fiber sensors applied to a structure. The interrogation system also includes at least one electro... | 10/16/2007 |
| 7248985 | Acoustic signature testing for electronic, electromechanical, and mechanical equipment A method for testing a unit is described where the unit includes one or more of electrical, electronic, mechanical, and electromechanical components. The described method includes applying at least one stimulus to the unit, receiving sound emissions from the unit, c... | 07/24/2007 |
| 7243526 | Device and method for measuring the impact properties of a sport field surface The tuft impact tester mounts a test probe in a suspended manner from a tripod arrangement via a gimbals mechanism so that the test probe is able to move along a vertical axis. The test probe is dropped from a predetermined height, the velocity of the test probe is ... | 07/17/2007 |
| 7240545 | Test apparatus for direct measurement of expansion and shrinkage of oil well cements A test apparatus for the measurement of expansion and/or shrinkage of a cement test sample during curing under pressure and temperature conditions that simulate downhole oil well conditions isolates the test sample from a first fixed volume of incompressible pressur... | 07/10/2007 |
| 7197931 | Sensors for monitoring structural health conditions Sensors and systems for monitoring structural health conditions. The present invention provides a device for monitoring structural health conditions including a dielectric substrate, a piezoelectric device for actuating and/or sensing Lamb waves, a molding layer dep... | 04/03/2007 |
| 7180404 | Wireless sensor systems and methods, and methods of monitoring structures A wireless sensor system includes a passive sensor apparatus configured to be embedded within a concrete structure to monitor infiltration of contaminants into the structure. The sensor apparatus includes charging circuitry and a plurality of sensors respectively co... | 02/20/2007 |
| 7152467 | Parallel seismic depth testing using a cone penetrometer A parallel seismic tester utilizing a cone penetrometer to test the depth of a foundation or the like comprises three important elements: the cone penetrometer which houses a receiver, an impactor to impact the structure, and data gathering and analyzing equipment. ... | 12/26/2006 |
| 7134342 | Magnetic infrasound sensor A magnetic infrasound sensor is produced by constraining a permanent magnet inside a magnetic potential well above the surface of superconducting material. The magnetic infrasound sensor measures the position or movement of the permanent magnet within the magnetic p... | 11/14/2006 |
| 7131238 | Method of testing seismic braces Braces for bracing objects in structures against forces due to earthquakes are tested by subjecting components of the braces for attaching the braces to the object or structure to cyclic loading of approximately 15 cycles. The cyclic forces are applied to different ... | 11/07/2006 |
| 7117742 | Sensors and systems for structural health monitoring Sensors and systems for monitoring structural health conditions. The present invention provides a device for monitoring structural health conditions including a dielectric substrate, a piezoelectric device for actuating and/or sensing Lamb waves, a molding layer dep... | 10/10/2006 |
| 7107849 | Vibration source probe system A vibration source probe system for detecting the surface waves of vibration coming over the ground or the floor of a building and specifying and displaying a vibration source at a factory or on a road. The position of a vibration source is estimated from a p... | 09/19/2006 |
| 7089816 | Method and apparatus for testing cement slurries A method and apparatus for testing cement comprising introducing cement into a curing vessel that is at least partially inside a test vessel, curing the cement at a selected temperature and pressure, maintaining the cement at least at the selected temperature and pr... | 08/15/2006 |
| 7082831 | Measurement of base and subgrade layer stiffness using bender element technique The present invention relates to a device and method for measuring the stiffness of base and subgrade layers of soil. The device is a penetrometer comprising first and second spaced apart cone penetrometer shafts. A first of the cone penetrometer shafts is fitted wi... | 08/01/2006 |
| 7080555 | Distributed mode system for real time acoustic emission monitoring A distributed real time health monitoring system is described for monitoring of acoustic emission signals from different regions of a structure such as aircraft or spacecraft structures. The health monitoring system has its analysis and prognosis intelligence distri... | 07/25/2006 |
| 7073374 | Soil compaction measurement on moving platform An apparatus and method are provided for the in-situ measurement of the stiffness of a surface. The apparatus includes a platform, which is movable relative to the surface. A stiffness measurement device is supported by the platform in a stationary position relative... | 07/11/2006 |
| 7072768 | Method for laterally extrapolating soil property data using soil samples and seismic amplitude data within a seismic coverage area A method for laterally extrapolating shallow soil properties using soil samples and seismic amplitude data within a seismic coverage area entails obtaining seismic amplitude data for the seismic coverage area and obtaining average soil property and soil impedance da... | 07/04/2006 |
| 7054228 | Sound source location and quantification using arrays of vector probes Method and apparatus for locating and quantifying sound sources using an array of acoustic vector probes (200). Signals received at the probes are converted to digital form and fed into a digital signal processor (400) which computes the sound pressure... | 05/30/2006 |
| 7043989 | Method and apparatus for testing installation quality in a grouted anchor system The invention concerns a method of testing the installation quality of a grouted anchor system comprising at least one tendon anchored by grout in a hole in a surrounding mass. The system typically includes a group of roof bolts (10, 12) each having a tendon ... | 05/16/2006 |
| 7040146 | Soil or snow probe A soil or snow probe which incorporates a load cell in the probe head and also an accelerometer so that a vertical strength profile of the snow or soil can be established. The device does not need to be driven at a constant speed and can be manually driven into the ... | 05/09/2006 |
| 7040169 | Use of cuttings for real time attenuation prediction A method is disclosed for predicting attenuation in real time while drilling using a portable continuous wave technology (CWT) tool to obtain amplitude spectra as a function of frequency for the cuttings at the rig site. Attenuation is predicted, and plotted as a fu... | 05/09/2006 |
| 7023537 | System for monitoring the movements of construction work parts The invention relates to a system for monitoring the movements, if any, of construction work parts. It comprises: a plurality of measurement taking stations (S1, S2 . . . ) able to sight targets; a pl... | 04/04/2006 |
| 7014271 | Apparatus for detecting the state of rotation of cutting rollers of a shield tunneling machine An arrangement for detecting the state of rotation of cutting rollers (2) of a shield tunneling machine has at least one cutting roller (2) comprising a generator unit (12) that generates electrical energy when the respective cutting roller (... | 03/21/2006 |
| 7006000 | Earthquake detecting and warning device An earthquake detecting and warning device for detecting a vibration of the earth's surface is provided. The device includes a base, a top cover, at least a contact-conducting piece, a detecting and warning circuit, a shelling body and an elastic supporting componen... | 02/28/2006 |
| 6985815 | Instantaneous spectral analysis A method of seismic data processing is described in which a particular wavelet is selected from a plurality of wavelets as being most characteristic of a received seismic signal. A subtracted signal can be determined by subtracting a weighted signal of the particula... | 01/10/2006 |
| 6962082 | Device and method for acoustic diagnosis and measurement by pulse electromagnetic force The invention provides an acoustic diagnosis/measurement apparatus/method using a pulse of electromagnetic force, capable of non-destructively and precisely diagnosing or measuring corrosion, adhesion, the cover depth, and/or the diameter of a reinforcing iron rod i... | 11/08/2005 |
| 6959589 | Ultrasound analysis of slurries An autoclave reactor allows for the ultrasonic analysis of slurry concentration and particle size distribution at elevated temperatures and pressures while maintaining the temperature- and pressure-sensitive ultrasonic transducers under ambient conditions. The react... | 11/01/2005 |
| 6954146 | Method for determining a state of a road during the driving mode of a motor vehicle In a method for determining the state of a road during driving of a motor vehicle, the sound which is generated when a vehicle tire rolls on an underlying surface is sensed. A frequency signal is determined by means of a sound level signal which describes the sound,... | 10/11/2005 |
| 6941819 | Apparatus and method for determining the dynamic mechanical properties of a cement sample An apparatus for determining dynamic mechanical properties of a cement sample. The apparatus includes an isolator located within a cavity defined by a body. The isolator has an attached end that engages the body proximate a narrow end of the cavity. A space between ... | 09/13/2005 |
| 6931929 | Filler detection method and filler detection device A sine wave electric signal whose frequency continuously varies within a predetermined frequency range is applied to a piezoelectric speaker, whereby a vibration frequency characteristic of the piezoelectric speaker is detected. A change of the frequency characteris... | 08/23/2005 |
| 6912903 | Soil compaction measurement An apparatus and method are provided for the in-situ measurement of the stiffness of a layer of soil or other surface of interest. The apparatus includes a contact foot for engaging the surface and a drive transducer coupled to the contact foot for applying a vibrat... | 07/05/2005 |
| 6915217 | Laser doppler vibrometer for remote assessment of structural components A method and system for remotely inspecting the integrity of a structure. This can be performed by a method creating a vibratory response in the structure from a remote location and then measuring the vibratory response of the structure remotely. Alternatively, this... | 07/05/2005 |
| 6909669 | Scour detection and monitoring apparatus adapted for use in lossy soils and method of employment thereof A sensor for detecting and monitoring scour in sediment positioned beneath a body of water, which includes a probe at least partially embedded in the sediment. Sensor electronics are superimposed on the probe. Such electronics include a reflectometer, a battery supp... | 06/21/2005 |
| 6862252 | Method and apparatus for acoustic detection of buried objects Method and apparatus for acoustic detection, location and identification of a buried object using a source emitting bursts of sound that penetrate the ground and return echoes from the object to an array of acoustic vector probes (200) located above the groun... | 03/01/2005 |
| 6829986 | Compactor In a compressor comprising at least one traveling drum (4,4a,4b) rotatable about a drum axis (2), and an oscillation exciter supported in the drum (4,4a, 4b), the angular position of the oscillation exci... | 12/14/2004 |
| 6809991 | Method and apparatus for detecting hidden features disposed in an opaque environment An excitation signal is selected and transmitted, and a signal is received containing information produced by a remote object in response to the excitation signal. The information is evaluated to attempt to identify the object, the excitation signal is adjusted on t... | 10/26/2004 |
| 6661346 | Gas, fire and earthquake detector A safety system for a building has an earthquake detector circuit for detecting ground accelerations exceeding a threshold acceleration/frequency curve dividing safe and hazardous ground accelerations throughout a predetermined frequency range. The earthq... | 12/09/2003 |
