75 results about "Structural condition" patented technology

Methods of operating an interrogation system that has a plurality of patches attached to a host structure. Each patch is capable of generating a diagnostic wave and / or developing a sensor signal in response to the diagnostic wave. In each method, a Euclidean undirected graph is generated by forming a plurality of paths, wherein each path connects two of the patches and the length of the path is shorter than a preset limit. Then, a directed graph is generated by assigning a propagation direction of the diagnostic wave to each path. Structural condition index (SCI) values are measured by use of the directed graph and, based on the SCI values, the host structure is scanned for anomalies. The directed graph is reconfigured to enhance accuracy in determining the shape and location of the anomalies.

Sensors, including fiber optic sensors and their umbilicals, are mounted on support structures designed to be retro-fitted to in-place structures, including subsea structures. The sensor support structures are designed to monitor structure conditions, including strain, temperature, and in the instance of pipelines, the existence of production slugs. Moreover the support structures are designed for installation in harsh environments, such as deep water conditions using remotely operated vehicles.

An apparatus for implementing a spinal fixation system with supplemental fixation includes a spinal fixation rod assembly and at least one supplemental fixation device. The spinal fixation rod assembly is adapted to provide primary fixation at a plurality of first fixation points by being secured to a plurality of first vertebral components except not into one of the first vertebral components of the plurality that is in a weakened structural condition and located between other of the first vertebral components of the plurality. The supplemental fixation device is adapted to provide supplemental fixation for the assembly at a second fixation point by being secured to a second vertebral component located adjacent to and offset from the one first vertebral component in the weakened structural condition and also to interconnect with the assembly to provide anchorage and thus additional fixation supplemental to the primary fixation.

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 wave. The system includes a tree structured relay unit that has a root node and at least one lower level node that includes at least one leaf node connected to the patch sensors. The lower level node includes switches, wherein the switches are operated to establish a channel between the root node and a selected one of the patch sensors and wherein actuator signal or sensor signal is transmitted through the channel. The sensor signals are analyzed to monitor health conditions thereby prevent catastrophic failure.

An apparatus for monitoring the structural integrity of a component. A monitoring structure is applied to a component that is subject to structural degradation. The monitoring structure includes an electrical conductor that becomes cracked if the component becomes structurally degraded. When the component is a ductile metal component that may be degraded by bending, the electrical conductor is formed of a brittle material that cracks when the ductile metal component is bent. When the component is a brittle ceramic heat shield wherein a crack having a critical length is of concern, the electrical conductor is located at a predetermined location wherein a critical length crack in the component will propagate into the conductor. A crack in the electrical conductor is detected with a monitoring device to indicate a degraded structural condition in the component.

The invention relates to an invisible disease detection method of a pavement structure layer, which comprises the steps of detecting a pavement with a road ground penetrating radar and an excitation pavement acoustic generator, obtaining a modulus of resilience of the pavement structure layer according to detected data, analyzing a strength characteristic of the pavement structure layer of a detected road section according to the modulus of resilience, and exactly detecting positions and sizes of invisible diseases such as cavities and looseness in the pavement. The method can quickly, accurately and continuously detect the invisible diseases such as the looseness, the cavities, interlayer discontinuity and poor strength in the structure layer of the pavement of forms such as highways of various grades, urban roads and airfield runways, provides complete data for evaluating the detected pavement, provides bases for implementing road prevention and maintenance, provides data support for maintenance decisions within the service life of the road, reduces interference with traffic, is nondestructive, reduces secondary damages to the pavement, saves cost, reduces energy consumption, increases social benefits, and can evaluate structural conditions of the pavement more completely and reasonably.

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 wave. The system includes a tree structured relay unit that has a root node and at least one lower level node that includes at least one leaf node connected to the patch sensors. The lower level node includes switches, wherein the switches are operated to establish a channel between the root node and a selected one of the patch sensors and wherein actuator signal or sensor signal is transmitted through the channel. The sensor signals are analyzed to monitor health conditions thereby prevent catastrophic failure.

A method of health monitoring and assessment of an aircraft structure includes collecting data from a plurality of sensors located at one or more components of the aircraft. The sensors assess a physical condition of the components and are arrayed in one or more aircraft zones. The data is communicated to a health assessment module, which calculates one or more component structural condition indicators of each component. The component structural condition indicators are compiled and one or more component structural health indicators are calculated. The component structural health indicators are compiled by aircraft zone and a zone structural health indicator is calculated based on the component structural health indicators of components residing in the particular aircraft zone. An aircraft level health indicator is calculated based on the zone structural health indicators and one or more maintenance actions are recommended based on the structural condition and health indicators.

The invention is a wireless sensor and telemetry system for use on a vehicle such as an aircraft including at least one sensor node, a gateway, a user control system, data management and analytics means, wherein the sensor node is capable of sensing at least one type of operational performance or structural condition parameter data for the vehicle. Sensor node is attached to the vehicle in a specific location so that the data acquired gives information to the users of the system that relates to the operational performance or structural condition of the vehicle during operation. The sensor node wirelessly transmits the data it acquires to the gateway. The user control system enables person / s, to remotely operate and control the wireless sensor and telemetry system, by sending wireless operational control instructions to the system either via the gateway or directly to a particular sensor node or to a cluster of sensor nodes.

A telescopic boom (1) for a vehicle (25) or a hoist with a storage rack (6) for at least two box girders (2, 3) guided displaceably in one another in the direction of their longitudinal axes, which are mounted to pivot about a horizontal pivot axle (5) in the storage rack (6) and which can be displaced reciprocally by means of a servo-drive (19) is described. In order to create advantageous structural conditions it is proposed that the longitudinal axles of the box girders (2, 3) form an upwards arched arc of a circle (4) which runs concentrically to a common axis parallel to the pivot axis (5).

A method and system for evaluating the interior surface and exterior wall conditions of a pipeline while also dynamically installing a repair coating in a pipeline, such as an underground water pipeline. The system is towed into the pipeline and drawn back therethrough. As the system is drawn back, one module in the system evaluates the surface condition of the interior of the pipe and another module evaluates the structural condition of the wall of the pipe. Based on the evaluation data obtained from the two modules an epoxy material is applied to the interior surface of the pipe using a spin cast machine that is drawn behind the two modules. Preferably, a layer of epoxy is applied to the interior surface of the host pipe to the appropriate thickness based on the pipe condition as determined by the two modules.

A method for electing a ring manager of ring topology network and a node are disclosed, where, to this end, a node responsible for electing the ring manager periodically requests each node of diagnostic information on packet traffic and receives the diagnostic information on packet traffic from each node, newly elects a node capable of performing a ring manager role, and informs each node of information on the newly elected ring manager, whereby, the ring network can be more effectively operated because the ring manager is elected based on network load status that changes in real time even in the course of a ring network being initially set up and operated responsive to structural conditions including hop count of each nod and MAC node.

A tank having a system for monitoring the structural conditions of the tank. The tank includes: an inner liner adapted to contain a gas thereinside and to prevent permeation of the gas therethrough; a shell surrounding the inner liner; and a plurality of diagnostic network patches (DNP) attached to the outside surface of the shell. Each DNP is able to operate as a transmitter patch or a sensor patch, where the transmitter patch is able to transmit a diagnostic signal and the sensor patch is able to receive the diagnostic signal. The diagnostic signal received by the DNP is analyzed to monitor the structural conditions of the tank.

The invention relates to a making method of a soil monolith, comprising the following steps of: drilling treatment, gum-dipping treatment, linen pasting, bottom board pasting, monolith finishing and gum-spraying and shaping. After the drilling treatment is carried out to the soil monolith, gum and pillars fully contact, and then a soil displaying device made by a method of pasting bottom board on linens and other methods through the simultaneous actions of gums with different concentrations enables the pillars to be preserved for a long term. Furthermore, the original-shape structure of soil is trimmed by using knives, small needles, hooklets and the like so that the upper and lower levels and the structural condition of the soil are visually reflected.

A system for remotely identifying, tracking, and monitoring transported goods includes a sensing and communications device (14) embedded in a shipping container (2). The sensing and communications device (14) includes onboard sensors (58,60,62) and wirelessly communicates with external sensors (24,26) to receive environmental and structural condition data. The device (14) communicates the data via either an RF interface (52,54) or a cellular telephone system interface (48,50) to a remote monitoring station (68). The remote monitoring station (68) analyzes the data, presents the data to a user, and enables the user to program the device (14).

The invention relates to a container crane real time on-line safety monitoring system. Twelve fiber grating sensors are respectively distributed at four parts of a container crane, and connected into one line in series, a four-way fiber is connected with a four optical-fiber cable, the fiber cable accesses signals into a four-channel fiber grating wavelength demodulator in the electric appliance chamber of the container crane, the output signals of the demodulator are inputted into a computer to be processed, and are displayed in a driving cab on the container crane and in a ground technique center monitoring room. The system adopts the high precision, remote, distributed and long lasting fiber grating sensing technique, thus the utilize condition of the structural condition (stress / loading and so on), the safety and fatigue life time and so on ia accurately determined through the real time on-line long-range monitoring to the running condition of the crane, in particular to the structural stress, oscillation and loading (goods and environments) of the crane, thereby providing quantized data for the operation and maintenance of the crane, and improving the economical efficiency and security of the crane.

The invention discloses a one-dimensional cadmium sulfide nanorod catalyst, and a preparation method thereof and an application thereof in producing hydrogen through acoustic catalytic cracking of water. The catalyst has a wurtzite crystal structure, and is non-centrosymmetric crystal. The catalyst satisfy the structural condition of piezoelectric crystal. The specially oriented nanorod shape of the catalyst can enrich environmental soundwave energy through piezoelectric effect, such that negative charge is produced on the surface of the nanorods. Therefore, pure water cracking is catalyzed, and hydrogen gas is produced. The preparation method mainly relates to a one-step solvothermal method. Cadmium sulfide growth orientation is regulated with the coordination or chelation effect of crystal seeds and diethylenetriamine solvent molecules, and the one-dimensional nanorod morphology is obtained under appropriate reaction temperature and reaction time conditions. The activity of the obtained cadmium sulfide nanorods for cracking pure water to produce hydrogen under sound driving is substantially higher than those of nano-flake wurtzite-type cadmium sulfide sample, micro-spherical wurtzite-type cadmium sulfide sample, and nanorod wurtzite-type cadmium sulfide samples obtained with a traditional two-step synthesis method. The cadmium sulfide nanorod catalyst provided by the invention has a good application prospect in the field of sound energy-hydrogen energy conversion. The preparation method is simple to operate, and is suitable for industrialized production.

A system and method for analyzing aircraft operation and maintenance history in light of maintenance reports, aircraft type system failure history, health management reports, and aircraft exterior structural conditions to produce a real time recommendation regarding aircraft maintenance and dispatch. A visual inspection report is generated by capturing a real time image of an exterior of the aircraft, inverting the real time image, superimposing the real time image on a previous image of the aircraft exterior, and detecting any variation on the combination of superimposed inverted image on the previous image of the aircraft exterior. Aircraft type historical systems failure reports are analyzed to identify any predictive latent system failure of the aircraft based on the aircraft type historical systems failure report and aircraft operation history and maintenance history.

The invention relates to a method for providing a structural condition of a structure, comprising providing an excitation wave generator; providing an excitation wave sensor; injecting an excitation burst wave into the structure using the excitation wave generator; obtaining a measured propagated excitation burst wave using the excitation wave sensor; correlating the measured propagated excitation burst wave with one of a plurality of theoretical dispersed versions of the excitation burst wave; and providing an indication of the structural condition of the structure corresponding to the correlated measured propagated excitation burst wave. The method may offer a better localization of the reflection points and thus of the potential defects present in a structure under inspection, when compared with a group velocity-based or time-of-flight (ToF) approach. The method may be particularly useful for structural health monitoring (SHM) and Non-Destructive Testing (NDT). The method may also enable determination of the mechanical properties of the structure.

The invention discloses a roller compacted concrete dam structural condition monitoring system and monitoring method. The system comprises a structural condition monitoring apparatus and a bending adjustment apparatus, and the structural condition monitoring apparatus is connected with the bending adjustment apparatus through a temperature sensing fiber. Based on temperature information obtained by the temperature sensing fiber, differences between a roller compacted concrete dam body and bedding plane thermal parameters are taken into consideration, calculation analysis is carried out based on equivalent analysis of such thermal parameters as a roller compacted concrete online expansion coefficient, specific heat and the like by use of a finite element temperature strain increment calculation form, at the same time, linear strain and tangent strain which are caused to a bedding plane and the body of a roller compacted concrete dam due to the differences of the thermal parameters are also taken into consideration, the structural condition of the roller compacted concrete dam is analyzed and evaluated, based on distributed monitoring of the temperature sensing fiber, the monitoring capability is greatly improved, the demand for actual structural condition diagnosis of the roller compacted concrete dam is well satisfied, and an important guarantee is provided for current roller compacted concrete dam structural condition health monitoring study.

One embodiment of the practical framework for production of apparel articles incorporating electronic devices such as wired speakers. This framework securely locates the desired electronic (1) and applique elements (9, 10). The materials of which the substrate (3, 4, 6, 7) is comprised possess distinct qualities enabling it to be molded, formed, cut, sewn, mechanically fastened, and adhered to. In this way the substrate (3, 4, 6, 7) can be imparted with distinct features (3a, 3b, 3c, 4a, etc. . . . ). The features can provide for specific dimensional requirements and structural conditions. Some of these substrate features can be an acoustic chamber for a speaker (4a) or a detailed shape on which to fasten decorative materials (3a). This combination of features and qualities make the framework uniquely provide for any number of varied designs.

Systems, methods, and kits for reducing structural vibrations on wind turbine blades are provided. The actual dynamic structural conditions of a wind turbine blade can be used as a feedback mechanism. A flow control device and a sensor can be installed on a wind turbine blade, and a closed loop control system in operable communication with the flow control device and the sensor can be used to provide closed loop control.

The invention discloses a submerged fermentation cellulase of trichoderma reesei liquid and an enzymatic pulping process which is a novel process to use the trichoderma reesei as a fermentation strain to produce a cellulase used by self for the enzymatic pulping in a mode of deep liquid fermentation. The technical process is as follows: adopting paper pulp to be processed as a fermentation carbon source; and through the mode of the deep liquid fermentation, preparing the needed cellulase used for the enzymatic pumping after the optimization of a fermentation medium and a fermentation condition. The invention has the advantages of simple process, less equipment investment, low cost and compact technical process; the adoption of the pepper pulp to be processed as the fermentation carbon source can significantly improve the adaptability of an enzyme liquid; and the cellulase has high enzyme activity, less dosage and good effect, and can reduce the energy consumption of the pumping. The submerged fermentation cellulase is suitable for the pulping process of pulping raw materials under the prior structural condition of raw materials for paper making in China.

The invention discloses a construction method for a shield machine to enter a hole to receive a concrete box. The method includes the following steps that one concrete box is constructed in a shield machine receiving well; a hole door is broken by the shield machine, and tunneling is stopped; the concrete box is filled with backfill materials; the backfill materials are tunneled by the shield machine till the backfill materials enter the concrete box; the hole door is blocked; the concrete box is broken. Due to the fact that one concrete box is constructed in the receiving well, the concrete box is filled with the backfill mediums, the backfill mediums are tunneled by the shield machine and enter the box, earth pressure balance in construction for the shield machine to enter the hole for receiving is well kept, earth collapse is prevented, a construction technology applicable to complex surroundings and geological conditions is provided, and with the construction technology, the shield machine can safely and reliably enter the hole for receiving under various structural conditions.

A method for testing the microstructure of a welded joint for interior damage due to material creepage, with the following steps is disclosed: creating at least one ultrasonic surface wave by a first test head, receiving of the ultrasonic surface wave by a second test head, determining the acoustic properties within the structural conditions on the basis of the relation between a created and received ultrasonic surface wave, and determining the degree of damage of the interior structural conditions on the basis of the acoustic properties ascertained.

The invention belongs to the technical field of gas extraction of a coal seam with high gas and low permeability, and particularly relates to a method for improving extraction effect of a single coalseam with high gas and low permeability. According to the method, by using acoustic emission Kaiser domino effect detailed tests and results of three-dimensional engineering dimension numerical valueinversion containing structural conditions, according to recovery area stress field states, matched permeability improvement and extraction processes are designed; stress field distribution characteristics, the permeability improvement and the extraction are combined and matched to improve the extraction to gas in the coal seam. According to the method, through coal storage seam evaluation, recovery area pressure relief evaluation and extraction effect evaluation, dynamic design of extraction operation is achieved, so that a systematized extraction process is formed.

The invention discloses a level set topological optimization method for optimal design of a curved shell structure. The level set topological optimization method comprises the following steps of step1, determining an appropriate design domain according to actual structural condition requirements and performing discretization; step 2, determining a displacement constraint and a load boundary condition according to the actual working condition of the structure; step 3, adopting a quadrilateral flat plate shell unit, setting nodes on the curved surface of the curved shell structure, setting an initial level set function value, and constructing a four-dimensional level set function field; 4, solving a unit density value; step 5, performing finite element analysis on the structure, calculatinga velocity field at the geometric boundary of the structure according to an analysis result, and updating a level set function; step 6, iterative convergence judgment; and step 7, optimization structure processing. In the optimization design of the curved shell structure, the calculation amount can be obviously reduced, the calculation efficiency is improved, and the method can adapt to more complex structures.