A system for monitoring operation of a reciprocating compressor includes an inductive power generator configured such that reciprocating motion of a component of the compressor causes at least one magnet to move with respect to at least one coil and thereby inductively generate electrical power and one or more sensors powered by reciprocating motion of the compressor for monitoring a condition of the reciprocating compressor.

A testing apparatus for testing a device. In accordance with an embodiment the testing apparatus includes a base part; a testing head; first movement rails attached with the base part; a first movement platform positioned on top of the first movement rails adapted to enable movement of the first movement platform in a first direction; a second movement platform attached with the first movement platform so that the second movement platform is adapted to be movable in a second direction transverse to the first direction; a first support adapted to be movable in a third direction transverse to the first direction and the second direction; a movement mechanism for moving the testing head; and a second support attached with the vertical support for supporting the movement mechanism and the testing head. The movement mechanism comprises a first axis for pivoting the testing head; a second axis for tilting the testing head; and a third axes for rotating the testing head.

A test device suitable for acceleratory oblique water entry of a wedge has a frame, a water tank placed below the frame, an accelerator installed above the frame, an obliquing device connected to the frame, a wedge connected to the obliuqing device and an observation system. The frame is provided with vertical slide rails and a transverse slide rail. The accelerator mainly includes an air cylinder and an air compressor. The wedge is a flexible wedge or a rigid wedge. The observation system includes a pressure sensor, a strain sensor, a velocity sensor, an acceleration sensor and a particle image velocimetry device. The repeatability of the test process can be ensured by controlling the output pressure of the air cylinder.

A structural health monitoring system is provided comprising sensors and/or sensor modules attached to, or near to, one or more parts or regions of a structure that detect and measure data regarding physical or related features or phenomena associated with the structure before, during and after a load or other event impacting or otherwise affecting the structure. The sensor modules measure and convert the detected phenomena into digital data and transmit the data to a master station for data compilation, storage and analysis. The master station is configured to produce analytic work product based on sensed phenomena which is useful for assisting inspectors in determining what action to take with respect to a structure's health after an event.

A system and method for collecting test data from a unit under test (UUT) in a multi-gravity environment is disclosed. In one embodiment, the method comprises determining a desired accelerative load profile for the UUT, determining the commanded flight profile of a flight vehicle at least in part from the desired accelerative load profile and a predicted dynamic response of the flight vehicle having the UUT mounted thereto to the commanded flight profile, commanding the flight vehicle having the UUT mounted thereto to fly the determined flight profile, and collecting the test data using a data acquisition system communicatively coupled to the UUT.

A helmet testing apparatus including a movable member, a sensor coupled to the movable member and configured to acquire compliance data regarding a liner disposed within a shell of a helmet through engagement of the sensor with the liner, and a processing circuit configured to determine a rating for the helmet based on the compliance data and predetermined compliance parameters for the helmet.

A method is used for selecting a boundary sample. The method includes acquiring a deterioration trend of a new device by performing a deterioration acceleration treatment to the new device, acquiring deterioration trends of a plurality of repaired devices which have been repaired after long-term use by performing a deterioration acceleration treatment to the plurality of repaired devices, calculating an upper limit of deterioration of the repaired device based on the deterioration trend of the new device, and selecting a boundary sample indicating a limit state in which the device can be reused as a standard of reuse of the device by specifying a repaired device having the largest deterioration among the repaired devices having a deterioration not larger than the upper limit.

A leveling control system for an acceleration tester includes a support portion installed on a ground, a level portion of which a center is connected to one side of the support portion, a test portion located on one side of the level portion and configured to accommodate a test body, and a control portion located on an other side of the level portion, wherein the control portion includes guide rails formed extending in a longitudinal direction of the level portion and a first weight configured to move along the guide rails.

A testing assembly for use in testing a vehicle fixture is provided. The testing assembly includes a multi-axis centrifuge, a fixturing plate, a braking assembly, and a controller. The multi-axis centrifuge includes a central arm that is configured to rotate circumferentially along a rail guide. The fixturing plate is secured to a first end of the central arm. The fixturing plate includes a plurality of openings sized to receive a fastener assembly therethrough for securing the vehicle fixture in a desired position and orientation to the fixturing plate. The braking assembly includes at least one electric actuator coupled to the central arm for selectively stopping rotation of the central arm. The controller provides dynamic control of the multi-axis centrifuge using data gathered from at least one complete build-up test of a vehicle. The controller receives additional data from the testing assembly during testing of a vehicle fixture.

A ballast dummy system includes a base support configured to be retained in a seat of a ride vehicle of an amusement ride. The ballast dummy system also includes at least one bar coupled to the base support and extending in an axial direction. The ballast dummy system also includes one or more weights. Each weight of the one or more weights includes an axial hole configured to engage the at least one bar to retain each weight on the base support. The at least one bar is configured to block rotation of the one or more weights about a vertical axis.