Collision mitigation apparatus material testing systems having collision mitigation apparatus

    公开(公告)号:US11592375B2

    公开(公告)日:2023-02-28

    申请号:US16832708

    申请日:2020-03-27

    IPC分类号: G01N3/02 G01N3/20 G01N3/08

    摘要: An example material testing system includes: a crosshead configured to be actuated to transfer testing force to a test specimen during a material test; an actuator configured to actuate the crosshead and to apply the testing force to the crosshead; a force sensor configured to measure force applied by the crosshead to the specimen; and a control processor configured to: determine a reference force range based on a first force measurement from the force sensor in response to initiation of movement of the crosshead; and in response to a second force measurement by the force sensor that is outside of the reference force range, controlling the actuator to apply a braking force to the crosshead.

    Methods of making a tubular specimen with a predetermined wrinkle defect

    公开(公告)号:US11566984B2

    公开(公告)日:2023-01-31

    申请号:US16923413

    申请日:2020-07-08

    申请人: Bell Textron Inc.

    摘要: A method of offset load testing a tubular composite specimen with two pairs of aligned holes and having at least one defect, the method comprising: providing a testing apparatus having a pair of arms including a fixed arm and a mobile arm; securing the pair of arms using a fastener assembly in each of the two pairs of aligned holes; and moving the mobile arm to impart an offset load force to the tubular specimen. One aspect includes a method of offset load testing comprising: providing a testing apparatus having a pair of arms including a fixed arm and a mobile arm; providing a tubular composite specimen with a top portion and a bottom portion; securing the pair of arms to the top and bottom portions of the tubular composite specimen; and moving the mobile arm to impart an offset load force to the tubular composite specimen.

    TESTING APPARATUS AND TESTING METHOD

    公开(公告)号:US20230010092A1

    公开(公告)日:2023-01-12

    申请号:US17808626

    申请日:2022-06-24

    申请人: DISCO CORPORATION

    发明人: Makoto KOBAYASHI

    IPC分类号: G01N3/08 G01N3/06

    摘要: A testing apparatus includes a support unit that supports a lower surface side of a test piece, a pressing unit having an indenter that presses the test piece supported by the support unit, a drive unit that raises and lowers the pressing unit, a load measurement instrument that measures a load generated when the indenter presses the test piece supported by the support unit, and a controller that controls raising and lowering of the pressing unit. The controller is configured to be capable of stopping movement of the indenter when a measurement value of the load measurement instrument has turned from a rise to a fall after the indenter has started pressing of the test piece.

    Device for structure testing
    8.
    发明授权

    公开(公告)号:US11524765B2

    公开(公告)日:2022-12-13

    申请号:US16761179

    申请日:2018-11-02

    摘要: The invention relates to a test stand comprising a support (19, 25) which is moveably connected to a wall (18, 18′, 18″), a base, a frame (26) of the test stand or another part of the test stand and can be moved on a predetermined path; an actuator (22) which is connected to the support and by means of which the support (19, 25) that can be moved on the predetermined path, two clamping devices (13) respectively comprising a ball joint, wherein one of the two clamping devices (13) is seemed to the support (19, 25) and the other of the two clamping devices (13) is arranged in an axis (10) with the first of the two clamping devices (13), such that a test body (1) is clamped between the two clamping devices (13) on outer surfaces of the test body and can be maintained by the clamping devices (13), and a test force exerted by a test body by moving the support (19, 25) through the first of the two clamping devices (13) acts essentially along the axis (10). The test body is fixed by means of an elastic element (23) in order to limit a rotation of the test body about the axis (10).

    Automatic simulation test bench for similar materials of top-coal caving mining and test method thereof

    公开(公告)号:US11519837B2

    公开(公告)日:2022-12-06

    申请号:US17580358

    申请日:2022-01-20

    IPC分类号: G01N3/08 G01N3/02

    摘要: The disclosure discloses an automatic simulation test bench and a test method for similar materials of top-coal caving mining. Wherein, the test bench includes a test bench base, a coal seam and strata simulation module, a coal releasing simulation module, a material recovery module, automatic mixing system and a central control system. The disclosure adopts modular construction to meet the requirements of similar material simulation test of top-coal caving mining under different geological conditions and mining technology to the greatest extent. The disclosure adopts automatic control, reduces the working intensity and operation difficulty of the test personnel, and reduces the influence of human factors on the test results. The disclosure adopts a lifting structural design, so as to meet the requirements of similar simulation test of top-coal caving mining under different mining and caving ratios.