A method for determining the preload value of the screw based on thermal error and temperature rise weighting. Firstly, thermal behavior test of the feed shaft under typical working conditions is carried out to obtain the maximum thermal error and the temperature rise at the key measuring points in each preloaded state. Then, a mathematical model of the preload value of the screw and the maximum thermal error is established; meanwhile, another mathematical model of the preload value of the screw and the temperature rise at the key measuring points is also established. Finally, the optimal preload value of the screw is obtained. The thermal error of the feed shaft and the temperature rise of the moving components are comprehensively considered, improving the processing accuracy and accuracy stability of the machine tool, and ensuring the service life of the moving components such as bearings.

Aspects herein are directed to a support garment testing system comprising a torso form having a motion tracking sensor associated with one or more breast structures of the torso form. A support garment is secured to the torso form, and the torso form is mounted on a motion platform that, when actuated, causes displacement of the breast structures. The amount of displacement is measured by the sensor, and the data is used to assign a level of support provided by the support garment.

Provided is a test apparatus for an actuator, which can easily switch whether to establish or undo the coupling between an actuator to be tested and a load part configured to apply load to the actuator. A test apparatus for an actuator includes a load part for outputting load to be applied to an actuator to be tested, first levers for swinging around a rotational shaft in connection with an output from the load part, an idler link coupled to the output from the actuator to be tested, a second lever coupled to the idler link in a swingable manner and for swinging around a rotational shaft that is arranged coaxially with the rotational shaft of the first levers, and a clutch mechanism for coupling together the first levers and the second lever and undoing the coupling.

The present invention provides a load generating unit for testing an actuator, the unit including a first permanent magnet and a second permanent magnet spaced apart from each other; a third permanent magnet or a ferromagnetic body arranged in a row with the first permanent magnet and the second permanent magnet between the first permanent magnet and the second permanent magnet; and a first link passing through central axes of the first permanent magnet and the second permanent magnet to be penetrated to a central axis of the third permanent magnet and be connected to the actuator, wherein the third permanent magnet and the link are displaced in a length direction of the first link by a magnetic force. According to the present invention, the complexity, cost, and inertia of a device may be overcome and a load profile may be easily generated.

There are disclosed a measuring apparatus and method for measuring the pull-off force of a frangible arrangement connecting a capsule with a tamper evident band of closed annular shape, with an annular ridge that axially retains the tamper evident band, a pusher device that pushes the capsule so as to cause the breakage of the frangible arrangement, a sensor arrangement to detect the tensile force applied by the pusher device, and a lifting and abutting device arranged for supply the capsule to the annular ridge. There are further disclosed a band disengagement arrangement for disengaging the tamper evident band from the annular ridge after the breakage of the frangible arrangement, yet maintaining intact the closed annular shape of the tamper evident band.

Various disclosed embodiments include illustrative devices, systems, and methods for analyzing occupancy detection sensors. In an illustrative embodiment, a device includes a processor and a memory configured to store computer-executable instructions. The instructions are configured to cause the processor to receive an environmental value, send instructions to apply increasing forces to a seat portion of a seat, magnitude of sequential ones of the forces increasing over time, receive applied force values from a force applicator, receive a seat occupied signal from a seat sensor, record the applied force value associated with the applied force values in response to receiving the seat occupied signal, compare the recorded force value with a threshold force value associated with the received environmental value, and output a signal in response to the comparison.

An apparatus is provided for analysis of a leading edge rib of a fixed leading edge section of an aircraft wing. The apparatus may identify geometric or inertial properties of a plurality of stiffeners of the rib in which respective stiffeners are represented by a collection of geometry within a solid model of the rib, and perform an analysis to predict a failure rate of the leading edge rib under an external load. From the failure rate, the apparatus may determine a structural integrity of the leading edge rib under the external load. Identifying the properties may include, extracting a section cut of the geometry that corresponds to and has one or more properties of the respective stiffener, and identifying the properties of the cross-section and thereby the respective stiffener based on a correlation of the cross-section to a generic profile of a plurality of different cross-sections.

The invention describes a test rig (10) for testing a seat belt system and/or for testing components of a seat belt system. Said test rig (10) comprises a test rig base (12), a holding unit (18) for mounting a seat belt system to be tested and/or components to be tested of a seat belt system, an impact unit (16) configured to apply load to a seat belt system to be tested, and a linear drive unit (20). The invention further presents a test setup comprising such test rig (10). In addition, the invention provides a method for operating such test rig (10).

The disclosure relates to the treatment of non-metallic sucker rods, made of metal, particularly to the method of reclamation of used rods already used in the mechanical deep-pumping extraction of oil. The method of remanufacturing of standard length rods includes subjecting used non-metallic sucker rods to a destructive pull test.

Devices and methods are provided for testing and maintaining hydraulic tools and, in particular, devices and methods for testing and maintaining hydraulic forcible entry tools that are used to forcibly open locked doors, for example, in emergency situations.