75 results about "Structural condition" patented technology

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.

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.

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.

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).

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.

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.

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.

This is a support structure for situating and protecting operative devices in deep offshore locations to include certain types of wind turbines. The support structure can be made to submerge and reemerge automatically, with the operative device, to avoid damage that would be caused by hazards in a marine environment at or near the water's surface. Approaching hazards are detected remotely and by sensors located on and around the supporting structure. Critical environmental and support structure conditions are constantly monitored and managed by computer through a network of sensors, equipment controls, and pre programmed response sequencing.

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 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.