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230 条记录 (耗时 0.014 秒)

    Process and apparatus for the measurement of the anisotropy value of form changes in normal direction in sheet metals
    21.
    发明授权
    Process and apparatus for the measurement of the anisotropy value of form changes in normal direction in sheet metals 失效
    用于测量钣金中法线方向各向异性值变化的方法和装置

    公开(公告)号：US4297892A

    公开(公告)日：1981-11-03

    申请号：US97795

    申请日：1979-11-27

    申请人： Ferenc Nagy ,  Ferenc Szabo ,  Zoltan F. Szucs

    发明人： Ferenc Nagy ,  Ferenc Szabo ,  Zoltan F. Szucs

    IPC分类号： G01N3/06 ,  G01N3/08

    CPC分类号： G01N3/06 ,  G01N3/08

    摘要： The invention concerns a process and an apparatus for measuring the anisotropy value of form changes in normal direction in sheet metals (the r-value). In course of a standard tensile test, the longitudinal change of dimension of the test piece is measured. When a preselected value of change of dimension in longitudinal direction which is characteristic of the material of the test piece, is reacted during the measuring process, the appertaining change of dimension in lateral direction is measured. Thereafter, an r-value is selected from the r-values corresponding to different changes in dimension in lateral direction at a preselected longitudinal change of dimension, which is closest to the one measured at the change of direction in lateral direction. The apparatus comprises comparator and switching units which are connected to signal transmitters converting changes of dimension in longitudinal direction into electric signals. The comparator and switching units compare the electric input signals with reference signals. After the preselected change of dimension in longitudinal direction is reached in the course of the measuring process, these units send an interlocking signal to a further switching and decoding unit. This further switching unit is connected to a comparator unit which compares the electric signals corresponding to changes of dimension in lateral direction with the reference signals.

    摘要翻译： 本发明涉及一种用于测量金属板中法向方向变化的各向异性值（r值）的方法和装置。 在标准拉伸试验过程中，测量试件的纵向尺寸变化。 当在测量过程中，当试件的材料特征的纵向尺寸变化的预选值反应时，测量横向尺寸变化。 此后，在预选的纵向尺寸变化中，从横向上的尺寸不同变化的r值中选择r值，其最接近在横向方向变化时测量的纵向尺寸。 该装置包括比较器和开关单元，其连接到将纵向尺寸变化变换为电信号的信号发射器。 比较器和开关单元将电气输入信号与参考信号进行比较。 在测量过程中达到预先确定纵向尺寸的变化后，这些单元向另一个切换和解码单元发送互锁信号。 该另外的开关单元连接到比较器单元，该比较器单元将对应于横向尺寸变化的电信号与参考信号进行比较。

    Gage for measuring decrease in dimension of test specimen in tensile test
    22.
    发明授权
    Gage for measuring decrease in dimension of test specimen in tensile test 失效
    用于测量拉伸试验中试样尺寸减小的量具

    公开(公告)号：US4232446A

    公开(公告)日：1980-11-11

    申请号：US25412

    申请日：1979-03-30

    申请人： Don F. Woods ,  Ronald F. Larsen

    发明人： Don F. Woods ,  Ronald F. Larsen

    IPC分类号： G01B7/24 ,  G01N3/06 ,  G01B3/20 ,  G01B7/06

    CPC分类号： G01N3/06 ,  G01B7/24 ,  Y10S33/11

    摘要： A test gage for measuring the decrease in one dimension of a test specimen having a frame member with a sliding member positioned within the frame member. The test apparatus is adapted to receive a test specimen between the sliding member and one side of the frame member. The sliding member is held in contact with the test specimen by a spring. A proximity measuring device senses the position of the sliding member with respect to the frame member and provides an output signal proportional to displacement. Elastic bands are used to support the test gage on a tensile test machine which is used to apply a stress to the test specimen.

    摘要翻译： 一种用于测量具有框架构件的测试样本的一个尺寸的减小的测试计，其具有位于所述框架构件内的滑动构件。 测试装置适于在滑动构件和框架构件的一侧之间接收测试样本。 滑动构件通过弹簧与测试样品保持接触。 接近测量装置感测滑动构件相对于框架构件的位置，并提供与位移成比例的输出信号。 弹性带用于在拉伸试验机上支撑试验规格，拉力试验机用于对试样施加应力。

    Method of and a device for measuring a relaxation phenomenon
    23.
    发明授权
    Method of and a device for measuring a relaxation phenomenon 失效
    用于测量松弛现象的方法和装置

    公开(公告)号：US4103541A

    公开(公告)日：1978-08-01

    申请号：US848160

    申请日：1977-11-03

    申请人： Kozo Arai ,  Teizo Kotani ,  Toshio Mizushima

    发明人： Kozo Arai ,  Teizo Kotani ,  Toshio Mizushima

    IPC分类号： G01N3/32 ,  G01D3/024 ,  G01D3/028 ,  G01D9/16 ,  G01N3/06 ,  G01N19/00

    CPC分类号： G01D9/16 ,  G01N3/06

    摘要： A method of measurement of relaxation phenomena, in which input signals representing a relaxation phenomenon are recorded at equal intervals for logarithmic values of time.A measuring device for relaxation phenomena which comprises a logarithmic time pulse oscillator for producing pulse signals at equal intervals for logarithmic values of time, and a recorder for recording input signals representing a relaxation phenomenon converted into an electrical quantity, which operates to perform recording each time a pulse signal is produced.

    摘要翻译： 松弛现象的测量方法，其中表示松弛现象的输入信号以相等的间隔被记录在时间的对数值上。