Abstract: Provided are a vertical fatigue test device for a dynamic submarine cable based on a topology optimization design framework, and a method thereof. The device includes a bending table, a main framework, the dynamic submarine cable, a connecting hinge, a supporting frame, a bottom plate, and a tension actuator; the bending table is mounted on an upper plate at a top of the main framework, and the main framework, the supporting frame, and the tension actuator are mounted on the bottom plate; an upper end of the dynamic submarine cable is connected with the bending table through a clamping mechanism; each of a left end and a right end of the bending table is connected with a bending actuator; the bending actuators are connected to the upper plate and are configured to achieve reciprocating swinging of the bending table.

Abstract: The invention relates to a device for vacuum leak detection, comprising a vacuum pump (18), a test chamber (12) which is designed to accommodate the test specimen and can be evacuated by means of the vacuum pump (18), and a gas detector (16) which detects the gas evacuated from the test chamber (12) by means of the vacuum pump (18), wherein the test chamber (12) has a plurality of vacuum connections (26) provided with the vacuum pump (18) in order to evacuate the test chamber (12), characterized in that a common pump volume (28) which is connected to the vacuum connections (26) is fluidically provided between the vacuum connections (26) and the vacuum pump (18) and is evacuated by means of the vacuum pump (18).

Abstract: A tire behavior estimating device that estimates a physical amount relating to behavior of a tire from tire design information by using a tire model that outputs a physical amount relating to behavior of a tire in accordance with input parameters, the device including: a storing section storing relationships of correspondence between tire design information and parameters that are inputs to the tire model; an acquiring section acquiring tire design information; a converting section that, based on the relationships of correspondence stored in the storing section, converts tire design information acquired at the acquiring section into parameters to be input into the tire model; and an inputting section inputting the parameters converted at the converting section into the tire model.

Abstract: A method in which vibrations of a vibration machine, more particularly of a vibrating screen and a vibratory conveyor, are measured by a vibration sensor during operation. The vibration sensor measures vibration components of the vibrations of the vibration machine in three spatial directions of a Cartesian sensor coordinate system. The three vibration components form a vibration vector. In the vibration measurement processes, a gravity vector describing the direction of gravity is determined. Furthermore, a machine vector describing a preferred direction of a forced vibration of the vibration machine is determined. In addition, a three-dimensional Cartesian measurement coordinate system is formed, which is oriented on the basis of the direction of gravity and the preferred direction. The vibration vector is mapped from the sensor coordinate system to the measurement coordinate system.

Abstract: In a method for monitoring a geared motor, and a system, the geared motor has a gearbox at least partially filled with oil. A measure of the oil level, e.g., a measure of the filling-level height of the oil, is captured, and a measure of vibration is captured at at least one point of the gearbox. A first variable is formed by combining the measure of the oil level and the measure of vibration, and it is monitored whether the value of the first variable exceeds a permissible extent of deviation from a setpoint value or exceeds a threshold value.

Abstract: A tire abnormality determination system can include: a related information acquisition portion that acquires deterioration-related information that may exert influence on deterioration of a non-pneumatic tire mounted on a vehicle; a first determination processing portion that determines, based on the deterioration-related information, at least one of presence or absence of a sign of an abnormality in the non-pneumatic tire and presence or absence of the abnormality in the non-pneumatic tire; and an output processing portion that outputs a first determination result of the first determination processing portion to a predetermined output destination.

Abstract: A micromechanical device having a substrate with a main extension plane, a thin first functional layer over the substrate, and a thick second functional layer over the first functional layer. A fixed functional element and a movable functional element are formed in the second functional layer, The movable functional element is able to deflect in a first direction parallel to the main extension plane. The micromechanical device has a fixed stop element in the first functional layer, the movable functional element is also formed in the first functional layer and has a movable stop element there. The movable stop element can be applied to the fixed stop element when the movable functional element is deflected in the first direction.

Abstract: A wearable tensiometer integrates patient-worn muscle tissue tensiometery and motion tracking to enable real-time energy measurement for an individual's full gait cycle outside of a laboratory environment.

Abstract: Methods for diagnosing a subject for a COVID-19 infection state include collecting an alveolar air breath sample from a subject; passing the breath sample into contact with a volatile organic compound (VOC) sensor operable to detect a plurality of VOC biomarkers for a COVID-19 infection state; producing a readable sensor output for at least two of the plurality of biomarkers; and diagnosing the COVID-19 infection state of the subject based on the readable sensor output.

Abstract: Disclosed in the present utility model is a device for testing gas tightness of a bipolar plate. The device includes a fixing assembly and a liquid placing plate. The fixing assembly includes a base plate and a cover plate. The base plate and the cover plate are arranged opposite to each other, and a test space capable of accommodating a bipolar plate is formed between the base plate and the cover plate. The base plate or the cover plate is provided with a gas inlet for gas to enter the test space. The liquid placing plate is arranged in the test space and arranged to be stacked on the plate surface of the bipolar plate facing away from the gas inlet. The liquid placing plate is provided with a plurality of liquid placing recesses capable of containing liquid. The liquid placing recesses pass through opposite plate surfaces of the liquid placing plate.

Abstract: A method of inspecting an indirectly accessible cavity of a gas turbine engine is provided. The method includes memorizing a guide tube formed of smart metal alloy (SMA) into a bent shape and straightening the guide tube. The method also includes installing a scope, which includes a connecting line to which an inspection element is attached, into the guide tube. The method then includes inserting the guide tube into the gas turbine engine toward a location of the indirectly accessible cavity, heating the guide tube to cause the guide tube to return to the bent shape in order to bring the inspection element into the indirectly accessible cavity and using the inspection element to perform an inspection of the indirectly accessible cavity.

Abstract: A fuel injector testing machine is provided. The machine includes a head unit having a flow meter, and a fuel injector holding assembly. The head unit and/or the fuel injector holding assembly can be moved relative to each other, allowing the head unit to test a subset of fuel injectors held on the fuel injector holding assembly, and subsequently can test another subset of the fuel injectors via movement of the head unit and/or fuel injector holding assembly.

Abstract: Provided is a MEMS device including a substrate that has a first principal surface and a second principal surface facing the first principal surface, and in which a cavity recessed from the first principal surface side to the second principal surface side is disposed, and a MEMS electrode that is disposed within the cavity, and that is separated from a bottom surface of the cavity to the first principal surface side. The MEMS includes a movable electrode finger, a fixed electrode finger, a beam portion, and an electrode portion. The electrode portion includes a first electrode finger and a second electrode finger.

Abstract: It is disclosed herein a system for monitoring the integrity of a roof. The system comprises a plurality of monitoring devices. Each monitoring device may comprise at least one power supply, a sensor comprising at least one detection device, a shroud at the end of a conduit which is in sealed fluid communication with the inside of a roof assembly, a motivating source, a central processor, and a receiver.

Abstract: In some aspects, the present invention relates to a microscopy device having a body with a cavity, the cavity having a bottom and plurality of walls extending upward from the bottom, and forming an inside surface and an outside surface of the body, the cavity further comprising an opening opposite the bottom, at least one transparent window in the bottom, and an adapter extending outward from a first wall of the plurality of walls, wherein the body has a length ranging between about 10 mm and about 250 mm, a width ranging between about 10 mm and about 250 mm, and a height ranging between about 5 mm and about 100 mm.

Abstract: A system for detecting leaks from containers is provided. The system comprises conveying means including at least one inlet conveyor belt and being configured to transport containers, already filled with a given food and sealed, to an inspection zone. The system further comprises an inspection apparatus, configured to test the tightness of containers arrived at the inspection zone. The inspection apparatus comprises extraction means and suction means, configured to induce the release of volatile substances from each container arrived at the inspection zone and suck in gas surrounding each of the containers and any volatile substances leaked from the containers. The inspection apparatus also including detection means configured to analyze the sucked-in gas and detect the presence of any volatile substances leaked from the containers.

Abstract: An apparatus for detecting the clamping forces between a brake body (1) and a brake rotor (2) of a disc brake or drum brake comprises a multi-layer measuring film (3) that can be inserted between the brake body (1) and the brake rotor (2) and which multi-layer measuring film (3) comprises a sensor layer (6) with pressure-dependent changing electrical properties and two electrically conductive layers (7) connected to an evaluation device (5). For assignment of the determined clamping forces to the area of the sensor layer (6) exposed to the respective pressurization, the measuring film (3) has two electrode layers (8) connected to the evaluation device (5) for determining the film capacitance between the electrode layers (8).

Abstract: A method for detecting a deflection basin based on a deformation velocity of a pavement under a rolling load is provided.

Abstract: Techniques for acquiring and publishing water quality data in real time are disclosed. In some embodiments, the techniques can be realized as a water quality monitoring device that can include a temperature sensor configured to acquire temperature data from a body of water, a potential of hydrogen (pH) sensor configured to acquire pH data from the body of water, and an oxidation-reduction potential (ORP) sensor configured to acquire the ORP data from the body of water.

Abstract: A fluid port structure includes a tube and a cylindrical portion and receives injection of a fluid. The tube has sealability. A flow path through which the fluid flows is formed in the tube. In the cylindrical portion, a through hole that extends in an axial direction in which the fluid flows is formed. An upstream end portion of the tube is inserted into the through hole. An inner peripheral surface of the cylindrical portion has a tapered surface, and the more upstream a position on the tapered surface than a predetermined position in the axial direction, the larger a diameter of the portion of the through hole. The tube has a widening portion that widens along the tapered surface of the cylindrical portion in the upstream end portion.