161 |
Estimating and controlling loading experienced in a structure |
US14369545 |
2012-12-20 |
US10119521B2 |
2018-11-06 |
Jesper Sandberg Thomsen; Soren Dalsgaard; Asger Svenning Andersen; Lars Risager |
A method of estimating an amount of undesired loading experienced by at least a portion of a structure (100) is provided. The structure (100) may be, for example, a wind turbine generator (WTG) and the portion for which undesired loading is estimated may be, for example, a rotor (130) of the WTG. The method includes receiving a first signal characterizing instantaneous stress experienced by a component (140) of the structure (100) and filtering out at least a portion of the received first signal that corresponds to the desired loading experienced by the component to produce a first filtered signal. The amount of undesired loading experienced by the at least a portion of the structure (100) is estimated based at least partially on the first filtered signal. |
162 |
STRESS SENSOR FOR MONITORING THE HEALTH STATE OF FABRICATED STRUCTURES SUCH AS CONSTRUCTIONS, BUILDINGS, INFRASTRUCTURES AND THE LIKE |
US15957819 |
2018-04-19 |
US20180306656A1 |
2018-10-25 |
Elio GUIDETTI; Mohammad ABBASI GAVARTI; Daniele CALTABIANO; Gabriele BERTAGNOLI |
A stress sensor formed by a membrane plate; a first bonding region arranged on top of the membrane plate; a cover plate arranged on top of the first bonding region, the first bonding region bonding the membrane plate to the cover plate; three-dimensional piezoresistive elements extending across the membrane plate that are embedded in the bonding layer; and planar piezoresistive elements that extend across the membrane plate and are surrounded by and separated from the bonding layer. |
163 |
ACTUATOR SPRING LIFETIME SUPERVISION MODULE FOR A VALVE AND ACTUATOR MONITORING SYSTEM |
US15471897 |
2017-03-28 |
US20180283221A1 |
2018-10-04 |
Martin Reigl; Soeren Lange |
The present application provides a method of evaluating fatigue damage in an actuator spring of a valve used in a turbine by a data acquisition system. The method may include the steps of receiving a number of operating parameters from a number of sensors including valve spindle position over time, determining cyclic loading on the actuator spring based upon the valve spindle position over time, generating an intended design lifetime for the actuator spring, determining a fatigue damage indicator based on the cyclic loading as compared to the intended design lifetime, and altering one or more of the operating parameters and/or initiating repair procedures based upon the fatigue damage indicator. |
164 |
BEHAVIOR ESTIMATION METHOD FOR FAULT-CROSSING UNDERGROUND PIPELINE AND BEHAVIOR ESTIMATION DEVICE FOR FAULT-CROSSING UNDERGROUND PIPELINE |
US15916773 |
2018-03-09 |
US20180209869A1 |
2018-07-26 |
Shozo KISHI; Keita ODA |
A behavior estimation method includes a first step of calculating number of earthquake resistant joints required for absorbing a fault displacement amount in a pipe orthogonal direction, based on an allowable deflection angle and a pipe effective length, and calculating a deflection range in a pipe axis direction, a second step of calculating a load, received by the pipe due to relative displacement between the pipe and ground corresponding to a ground spring model in the pipe orthogonal direction defined with spring constants respectively for relative displacements smaller and larger than a predetermined relative displacement, a third step of calculating a bending moment distribution of joint positions from a bending moment of a trapezoidal distribution load, and obtaining a pipe deflection angle at each of the joint positions based on a predetermined joint deflection spring model, and a deflection performance evaluation step. |
165 |
Method and system for structural health monitoring with frequency synchronization |
US14526226 |
2014-10-28 |
US10024756B2 |
2018-07-17 |
Paulo Anchieta Da Silva; Fernando Dotta; Laudier Jacques De Moraes Da Costa; Arhur Martins Barbosa Braga; Luiz Carlos Guedes Valente; Daniel Ramos Louzada; Leonardo Salvini; Paula Medeiros Proença De Gouvêa |
Structural health monitoring (“SHM”) methods, apparatus and techniques involve building deformation fields maps (amplitude and phase related to excitation) on the surface of the structural component under monitoring based on a network of strain measurements by fiber Bragg grating sensors. |
166 |
Systems and methods for monitoring component strain |
US14948736 |
2015-11-23 |
US10012552B2 |
2018-07-03 |
Thomas James Batzinger; Bryan J. Germann; William F. Ranson |
A system for monitoring a component is provided. The system may include a strain sensor configured on the component, an electrical field scanner for analyzing the strain sensor, and a processor in operable communication with the electrical field scanner. The processor may be operable for measuring an electrical field value across the strain sensor along a mutually-orthogonal X-axis and Y-axis to obtain a data point set. The processor may further be operable for assembling a field profile of the strain sensor based on the data point set. Methods of using the system are also provided. |
167 |
INTEGRATED HYPER-REDUNDANT TACTILE SENSOR NETWORK BASED ON STRUCTURAL FIBERS |
US15340544 |
2016-11-01 |
US20180120173A1 |
2018-05-03 |
Daniel Park |
A system and method are disclosed for measuring stress in a composite structure including an integral sensor network. The composite structure is formed in layers with each of the layers formed from parallel fibers. At least one of the layers includes a plurality of fiber sensor cells distributed among the parallel fibers. Each of the fiber sensor cells has an inner fiber core and a non-conductive layer formed over the inner fiber core. A controller is electrically coupled to each of the fiber sensor cells and configured to determine a level of stress in the composite structure based on a change in a resistance level of the inner fiber core of each of the fiber sensor cells. The fiber sensor cells may be in a single direction or may be in a weave pattern with a first group arranged at a non-zero angle with respect to a second group. |
168 |
DEVICE FOR DETECTING STRAINS AND TRANSMITTING DETECTED DATA |
US15564790 |
2016-04-05 |
US20180106691A1 |
2018-04-19 |
Guido Maisto |
A device for detecting strains and transmitting detected data that can be applied to the surface of a structure to be monitored or incorporated in the structure is provided. The device allows to reliably acquire and transmit data concerning the strains undergone by the structure. The device comprises a matrix made of an electrically insulating material, in which at least one or more strain sensors, an electronic circuit and an antenna electrically connected to one another are embedded. One or more strain sensors are made of a material selected from metals and metal alloys, electrically conductive resins and electrically conductive inks. |
169 |
Pipeline apparatus and method |
US15029571 |
2014-10-23 |
US09939341B2 |
2018-04-10 |
John Cross McNab; Geoffrey Stephen Graham; Philip Michael Hunter Nott |
A pipeline apparatus comprising a flexible pipe body and a detection apparatus. The flexible pipe body includes an optical fiber extending at least partially along the length of the flexible pipe body, the optical fiber being encased in a metal tube. The detection apparatus comprises an optical sensor and an electrical sensor. The optical sensor is coupled to a first end of the optical fiber, the optical sensor being arranged to inject optical pulses into the optical fiber and to detect scattered or reflected light. The electrical sensor is coupled to a first end of the metal tube and to detect variation of an electrical impedance between the first end of the metal tube and a separate terminal. Variation of the scattered or reflected light, or impedance variation, is indicative of a potential pipe body defect. |
170 |
WALL SHEAR SENSORS WITH MULTIPLE BENDING BEAM FLEXURE AND MEASUREMENT SYSTEMS INCLUDING THE WALL SHEAR SENSORS |
US15722707 |
2017-10-02 |
US20180094992A1 |
2018-04-05 |
Ryan James Meritt |
A wall shear sensor includes a floating element fixedly attached to a base. The floating element has a sensing head opposite the base, and a split-beam flexure between the sensing head and the base. The wall shear sensor further includes at least one strain gauge coupled to the split-beam flexure, which measures strain imposed on a portion of the split-beam flexure when a wall shear is applied across a head surface of the sensing head. The split-beam flexure has at least one channel defined through the split-beam flexure parallel to a first transverse axis of the floating element. The floating element sways perpendicular to the first transverse axis of the floating element when a wall shear is applied across the head surface of the sensing head. Wall shear measurement systems include a test body, a sensor housing mounted to the test body, and a wall shear sensor in the sensor housing. |
171 |
INSTRUMENTED CONCRETE STRUCTURAL ELEMENT |
US15715786 |
2017-09-26 |
US20180087999A1 |
2018-03-29 |
Mikael CARMONA; Laurent Jouanet; Tony Camuel |
A concrete structural element is provided that includes a concrete matrix; a steel reinforcing structure embedded in said matrix; at least first and second attitude sensors at a distance from one another in a direction, embedded in said matrix and fixed to said reinforcing structure; and a processing circuit configured to recover attitude measurements supplied by each attitude sensor and configured to compute a deformation of said structural element relative to said direction as a function of the attitude measurements recovered. |
172 |
STRETCHABLE SENSOR LAYER |
US15629553 |
2017-06-21 |
US20180058975A1 |
2018-03-01 |
Irene J. Li; Fu-Kuo Chang; Frank J. Li |
A structural health monitoring system comprises: a flexible substrate configured for attachment to a structure, the flexible substrate having a plurality of sensors affixed thereon. The flexible substrate comprises a first portion configured for attachment to the structure, a second portion extending in continuous manner from the first portion, and a third portion extending in continuous manner from the second portion and being configured for attachment to the structure. The second portion includes a first section extending in continuous manner from the first portion, a second section connected between the first section and the third portion and having an edge extending in a direction different from an edge of the first section. |
173 |
SENSORIZED ROLLER |
US15628809 |
2017-06-21 |
US20180003492A1 |
2018-01-04 |
Andreas Clemens van der Ham; Nicolaas Simon Willem Den Haak; Gerrit-Jan Dop; Feng Qiu; Jeroen van Diermen |
The present invention resides in a sensorized roller of a roller bearing. The sensorized roller includes a roller bore that accommodates a measuring device for measuring deformation of the roller bore and electronics for processing a deformation signal from the measuring device and wirelessly transmitting the processed deformation signal to an external receiver. According to the invention, the measuring device and electronics are mounted in a rigid housing that is shaped to fit within the roller bore. A radially outer surface of the housing includes at least one aperture associated with the measuring device. Furthermore, the rigid housing is resiliently mounted to the roller bore via first and second sealing elements that enclose a radial gap between a radially inner surface of the roller bore and a radially outer surface of the housing. |
174 |
ROLLER WITH INTEGRATED LOAD CELL |
US15634144 |
2017-06-27 |
US20180003227A1 |
2018-01-04 |
Dop Gerrit-Jan; Hendrik Anne Mol; Jeroen van Diermen |
The present invention defines a roller of a roller bearing providing a hollow bore in which a load cell is arranged, for measuring a radial load acting on the roller. The load cell is mounted to the roller bore in a non-fixed manner and includes one or more cantilever beams that extend in an axial direction of the roller. A contact element is provided on each cantilever beam. Each element further bears against a surface of the roller bore. At least one sensor is provided on each cantilever beam for measuring bending thereof, due to deflection of the beam in a radial direction perpendicular to the axial direction. |
175 |
ELECTRICAL COMPONENT HAVING A SENSOR SEGMENT COMPOSED OF CONCRETE, METHOD FOR PRODUCING SAME, AND USE OF SAME |
US15544458 |
2016-01-19 |
US20170370693A1 |
2017-12-28 |
Thorsten KLOOSTER; Jan JURASCHEK; Pat TAYLOR |
The invention describes an electrical component (10) which at least comprises a section (12) configured as a sensor (sensor section) made of concrete and which contains electrically conductive aggregates (22) which are present in a region (24) near the surface of at least one outer surface (20) of the section (12) in a higher spatial density than in the remaining section (12). In addition, a method for its production and a use of the component (10) are described. |
176 |
MOBILE BRIDGE APPARATUS |
US15541439 |
2016-01-04 |
US20170363503A1 |
2017-12-21 |
IAN EDWARD TOTHILL; TIMOTHY JOHN DAVIS |
According to a first aspect of the invention, there is provided a mobile bridge apparatus, comprising: one or more mobile bridge modules; and a plurality of sensors for sensing a deformation of the one or more mobile bridge modules. |
177 |
Bolt sensor |
US15184285 |
2016-06-16 |
US09810525B2 |
2017-11-07 |
Takayori Hashimoto; Takuya Kitajima |
There is provided a bolt sensor which detects a fastened state of a bolt. The bolt sensor includes a sensor body including a through hole into which a shaft of the bolt is to be inserted, a light guide extending along an outer periphery of the sensor body, and a light source configured to emit light to the light guide based on output of the sensor body. |
178 |
Systems and methods utilizing carbon nanofiber aggregate for performance monitoring of concrete structures |
US14058547 |
2013-10-21 |
US09797937B2 |
2017-10-24 |
Yi-Lung Mo; Rachel Howser; Hermant Dhonde; Gangbing Song |
A carbon nanofiber aggregate (CNFA) system and method provides self-sensing capabilities that can be used to detect strain, moisture, and temperature changes. The CNFA may include cement, aggregate, silica fume, high-range water reducer (HRWR), and/or carbon nanofibers. The metal meshes in the CNFA may be utilized to monitor the electric properties of the CNFA to detect strain, moisture, and temperature changes. The CNFA may be embedded in concrete structures to allow detection of strain, moisture, and temperature changes that may cause damage to structures. Several metal meshes may be embedded in the CNFA. |
179 |
OBSERVATION SYSTEM AND CONTROL METHOD FOR OBSERVATION SYSTEM |
US15470037 |
2017-03-27 |
US20170284892A1 |
2017-10-05 |
Kazuyoshi TAKEDA |
An observation system includes an information acquiring section configured to acquire sensor information from a sensor section set in a structure and configured to detect vibration of the structure and a processing section configured to calculate information concerning a peak vibration frequency of the vibration on the basis of the sensor information and determine a surface state of the structure on the basis of the information concerning the peak vibration frequency. |
180 |
METHOD AND APPARATUS FOR MEASURING PHYSICAL DISPLACEMENT |
US15446800 |
2017-03-01 |
US20170254722A1 |
2017-09-07 |
Michael McNeilly; John J. Martin |
A displacement sensor assembly comprising a cantilever beam, a reaction block, a strain sensor, and a temperature sensor, wherein the cantilever beam is physically oriented such that the longitudinal axis of the cantilever beam is perpendicular to the direction of displacement, a first end of the cantilever beam is fixably mounted to a fixed reference and a first end of the reaction block is fixably mounted to a moving reference, a second end of the cantilever beam is joined to a second end of the reaction block, the strain sensor is mounted and calibrated to detect displacement between the fixed and moving reference by measuring strain on the second end of the cantilever beam, and the temperature sensor is mounted and calibrated to counteract the effect of thermal strain on the sensor assembly and a method of use therefore. |