Abstract: Examples include a cylinder for aligning magnetic or magnetizable particles contained in a coating agent on a substrate. In the region of the outer circumference of the cylinder, magnetic elements are arranged in n rows extending axially and in m columns extending circumferentially. At least two magnetic elements are provided one behind the other in the same column, mounted as a group at a shared carrier element and can be varied with respect to their axial position at the cylinder, collectively and independently of the magnetic elements of an adjoining column. The at least two magnetic elements of the same column are arranged at respective magnetic element carriers that can be positioned at the shared carrier element independently of one another in the circumferential direction and/or can be detached from the carrier element and/or are adjustable in the axial direction within an adjustment range.

Abstract: A system and method enable pressure testing a specimen with a portable module for deployment to a field site of the specimen, such as a pipeline. The module includes a processor capable of controlling various devices, such as valves and pumps, and recording sensed data from multiple sources, such as pressure/temperature/flow sensors, cameras and weather feed. The processor may receive input operation specifications for execution to perform the testing with limited human interaction through pressurization, hold and depressurization phases of the testing. The module includes safety features that may avoid over pressurization, require operator identifiers or initiate interlock protocols upon the processor detecting an anomaly. The processor then outputs notifications and reports of desired parameters from the test.

Abstract: A non-destructive test apparatus includes a drive coil and a resonant coil in working relation to the drive coil. The non-destructive test apparatus includes a voltage source coupled to the drive coil. The voltage source is configured to apply an alternating current signal to the drive coil. The non-destructive test apparatus includes a sensor coupled to the resonant coil. The sensor is configured to output sensor data indicative of a voltage induced in the resonant coil by the alternating current signal applied to the drive coil. The non-destructive test apparatus also includes a processor coupled to the sensor to receive the sensor data from the sensor. The processor is configured to determine, based on the voltage, a porosity of an item positioned in working relation to the resonant coil.

Abstract: A detector unit for use in an aspirating detection system. The detector unit includes an aspirator for drawing air along at least one sampling pipe and into the detector unit; a sensor chamber for analysing a sample of the air drawn into the detector unit; a Venturi conduit through which the air is moved by the aspirator, the Venturi conduit including a first portion of the Venturi conduit and a second portion of the Venturi conduit, a cross-sectional area of the first portion being smaller than a cross-sectional area of the second portion; a pressure sensor configured to detect a differential pressure between the air in the first portion and the air in the second portion of the Venturi conduit; and a controller configured to determine a leak and/or a blockage in the aspirating detection system based on the detected differential pressure.

Abstract: A soil layer extractor tool used in a system for obtaining a soil sample, dispensing liquid into the soil sample, collecting the resulting leachate, and extracting a soil layer from the obtained soil sample. The soil layer extractor tool includes a base, a holder for a sample tube, and crane for lifting walls of the sample tube to expose a soil sample within the sample tube. The base includes a lower base portion and upper base portion joined in sliding relation. Vertical posts are mounted on the upper base portion, and extractor blades are mounted on the vertical posts for extracting a soil layer. The extractor blades include a lower blade and upper blade, and a vertical blade positioned therebetween. A soil layer is extracted by a sliding movement pushing the extractor blades into the exposed soil sample thus removing a soil layer from sample contained in the sample tube.

Abstract: A vacuum-helium-leak-detection method based on a carbon-nanotube-based field-emission sensor that includes a carbon-nanotube-based cathode having a Raman amorphous peak ID/graphite peak IG ratio greater than 1.0. The method involves: setting a field-emission current at an initial, small emission current, recording an average of values of the field-emission current in a time period t, forming a sensing characteristic curve of the sensor, and performing fitting on the sensing characteristic curve so as to obtain an index curve; converting pressure values of helium gas into vacuum leak rates; and packaging the cathode into a vacuum chamber in a system to be detected, performing testing when a helium stream in the system to be detected reaches balance, obtaining an average of current variations in the time period t during the testing, and comparing the average with the index curve so as to determine a vacuum leak rate of the system to be detected.

Abstract: A method that detects locations of undesired levels of signal loss in DAS systems that use optical fibers. In the method, raw DAS signals are received from an optical fiber of a DAS system with dual photodetector positioned at the end(s) of the optical fiber. Locations on the optical fiber are named “channels” having a certain length on the optical fiber and are numbered according to distances of the channels from the photodetector. The raw DAS signals received from each channel are processed by the dual photodetector to obtain raw DAS statistical data for each channel. The obtained raw DAS statistical data are then reconstructed to produce reconstructed DAS statistical data in which noise has been removed. The reconstructed DAS statistical data form power statistics for each channel. The power statistics is expected to be linearly decreasing with a farther distance of each channel from the photodetector.

Abstract: An exemplary embodiment provides matching media for perfect transmission of ultrasonic waves by easily implementing perfect transmission of ultrasonic waves at a boundary between different elastic media through a matching layer provided at the boundary between the different elastic media and proposes a matching layer having a single layer structure of a simple single pattern that is easily processed, thereby easily implementing effects such as miniaturization of the matching layer, reduction of manufacturing cost, and improvement of manufacturability.

Abstract: The present disclosure provides methods to integrate piezoelectric micromachined ultrasonic transducer (pMUT) arrays with an application-specific integrated circuit (ASIC) using thermocompression or eutectic/solder bonding. In an aspect, the present disclosure provides a device comprising a first substrate and a second substrate, the first substrate comprising a pMUT array and the second substrate comprising an electrical circuit, wherein the first substrate and the second substrate are bonded together using thermocompression, wherein any set of individual PMUTs of PMUT array is addressable. In another aspect, the present disclosure provides a device comprising a first substrate and a second substrate, the first substrate comprising a pMUT array and the second substrate comprising an electrical circuit, wherein the first substrate and the second substrate are bonded together using eutectic or solder bonding, wherein any set of individual PMUTs of the PMUT array is addressable.

Abstract: Aspects of the subject technology relate to a device including a pressure sensor to measure a pressure level in a port cavity. A port allows equalization of air pressure between the port cavity and an outside environment. A vent port within the port cavity allows equalization of air pressure between the port cavity and an internal volume of a housing of the device. A tool is used to activate a heat-generating component of the device while the port is obstructed for a predetermined time duration to enable detecting a sealing efficacy of the housing.

Abstract: The invention provides a fracture opening simulation device for hard brittle mudstone and shale with organic matter, it includes a simulated support, the lower part of the simulated support is connected with a storage bucket bottom block plate through a screw, the middle of the simulated support is provided with a support socket with a circular structure, the upper surface of the storage bucket bottom block plate is provided with a circular convex structure of a block plate boss, the block plate boss is closely inserted in the support socket, the upper surface of the simulated support is fixed connected with a core column storage barrel.

Abstract: A device for applying vibrations to passenger cars has a platform with a roller on which a front or rear pair of wheels of the passenger car can be positioned. The roller has for each wheel positioned thereon at least two tracks with a different relief. In a first position the passenger car is located with the wheels on a first pair of the tracks and in a second position is located with the wheels on another pair of the tracks so that by rotating the rollers under the wheels vibrations are applied to the passenger car by the relief of the roller. Each track has a width greater than a greatest of the different wheel widths. There is a distance between each of the first and second pair of the tracks which is substantially equal to a greatest of the different track widths.

Abstract: A fiber optic distributed acoustic sensing (DAS) system for detecting a red palm weevil (RPW) includes an optical fiber configured to be wrapped around a tree and a DAS box connected to the optical fiber. The DAS box includes a processing unit that is configured to receive a filtered Rayleigh signal reflected by the optical fiber, and run the filtered Rayleigh signal through a neural network system to determine a presence of the RPW in the tree.

Abstract: Ultrasonic pulse velocity is a parameter for assessing strength of concrete structures and studying elastic properties. A method involves transmission of longitudinal ultrasound by a transmitting transducer and receiving by a similar transducer. A transit time-measurement and associated triggering pulses provide the overall time-measurement resolution of at least 1 ?s. An ultrasonic pulse velocity measuring device capable of generating ultrasound in the solid materials supporting the propagation of ultrasound and precisely measuring the ultrasonic propagation delay time or the transit time is also disclosed. An ultrasonic transit time measurement device having provision for automatic pulse threshold error correction is also disclosed. A method to realize fast counting for generation of high resolution with relatively slower microcontrollers is also disclosed.

Abstract: A vertical deflection estimation device usable for inertial navigation includes: a gravity gradiometer (10), a known vertical deflection library part (20), a high frequency extraction part (30), and an estimation part (40). The gravity gradiometer (10) measures vertical deflection in accordance with positional movement of the gravity gradiometer (10). The known vertical deflection library part obtains known coarse information of vertical deflection on map in accordance with the positional movement of the gravity gradiometer (10). The high frequency extraction part (20) extracts, from the measured vertical deflection, a high spatial frequency component of the measured vertical deflection. The estimation part (40) corrects the measured vertical deflection to derive estimated vertical deflection as highly accurate vertical deflection by combining the known coarse information of vertical deflection on map with the extracted high spatial frequency component of the measured vertical deflection.

Abstract: The present invention provides a pipeline potential safety hazard intelligent identification system and method integrating power frequencies, pressures and temperatures and belongs to the technical field of intelligent monitoring. A monitoring system includes temperature sensors, pressure sensors, an Internet of Things (IoT) electricity meter, a PLC, an IoT DTU and a remote server. The present invention has the advantages of reading and analyzing pipeline operating state parameters in real time via digital sensors, and realizing remote real-time monitoring by uploading data via the IoT DTU; acquiring a leakage transient temperature by performing energy analysis on fluid at a leakage location of a pipeline, deducing a variation of pressure gradients from a variation of temperature gradients, performing two-parameter linkage leakage analysis, and positioning a leakage point with higher accuracy; and realizing the control logic through the PLC, and being easy to operate and high in applicability.

Abstract: Disclosed is a screening method for selecting an adsorbent for use in environment-friendly gas-insulated equipment which contains an environment-friendly gas functioning as an insulating medium inside the equipment, the adsorbent to adsorb unwanted decomposed gas that is produced from decomposition of the environmental-friendly gas, the method steps include: establishing screening sets, performing pre-experiment adsorption experiment screening, standard gas adsorption experiment screening, and mixed gas adsorption experiment screening, establishing mapping relationship between a decomposed gas type set and a third adsorbent type set under different working conditions, and selecting an adsorbent combination mode suitable for a working condition type and a mixed gas composition mode based on the mapping relationship.

Abstract: A cable gland includes a hub body having a first end configured for attachment to a structure and a second end opposite the first end. The hub body defines an internal passage. A gland nut is configured for attachment to the second end of the hub body to secure a cable in the cable gland. The gland nut defines an internal passage such that the internal passage of the gland nut communicates with the internal passage of the hub body when the gland nut is attached to the hub body. A torque sensor module is mounted to one of the hub body and the gland nut and configured for measuring and indicating a component of an applied torque as a result of attaching the gland nut to the hub body when securing the cable in the cable gland.

Abstract: An acoustic field diffusion type electromagnetic acoustic transducer with improved periodic permanent magnets is provided, which includes periodic permanent magnets, a transducer framework, improved racetrack shaped coils and a transducer connector.

Abstract: A phase-based approach can be used for one or more of acquisition, storage, or subsequent analysis, e.g., A-scan reconstruction or Total Focusing Method imaging, in support of acoustic inspection. For example, binarization or other quantization technique can be used to compress a data volume associated with time-series signal acquisition. A representation of phase information from the time-series signal can be generated, such as by processing the binarized or otherwise quantized time-series signal. Using the representation of the phase information, a phase summation technique can be used to perform one or more of A-scan reconstruction, such as for pulse-echo A-scan inspection, or a TFM imaging technique can be used, as illustrative examples. In such a phase summation approach, time-series representations of phase data can be summed, such as where each time-series can be delayed (or phase rotated) by an appropriate delay value and then aggregated.