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    • 4. 发明申请
    • WEAR GAUGE ARRAY FOR HEAD PROTECTIVE COATING
    • 磨损保护涂层阵列
    • US20100269565A1
    • 2010-10-28
    • US12431529
    • 2009-04-28
    • Robert Glenn BiskebornW. Stanley CzarneckiJason LiangCalvin Shyhjong Lo
    • Robert Glenn BiskebornW. Stanley CzarneckiJason LiangCalvin Shyhjong Lo
    • G01N3/56G11B5/33B05D5/12
    • G01N3/56G01N2203/0664G11B5/3106G11B5/40
    • In one embodiment, a system comprises a magnetic head, a protective coating on a media-facing side of the head, and an indentation in the protective coating having a dimension that, when the protective coating wears, is indicative of an amount of wear of the protective coating. A method, in another embodiment, comprises creating an indentation in a protective coating of a magnetic head, the indentation having a dimension that, when the protective coating wears, is indicative of an amount of wear of the protective coating. In another embodiment, a method comprises visually inspecting indentations in a protective coating of a magnetic head, wherein at least two of the indentations have differing dimensions that, when the protective coating wears, are indicative of the amount of wear of the protective coating. The method also includes estimating an amount of wear of the protective coating based on the visual inspection.
    • 在一个实施例中,系统包括磁头,位于头部面向介质侧的保护涂层,以及保护涂层中的凹陷,其尺寸使得当保护涂层磨损时,其表示磨损量 保护涂层。 在另一个实施方案中,一种方法包括在磁头的保护涂层中产生凹陷,所述凹陷具有当保护涂层磨损时指示保护涂层的磨损量的尺寸。 在另一个实施例中,一种方法包括目视检查磁头的保护涂层中的凹陷,其中至少两个凹槽具有不同的尺寸,当保护涂层磨损时,其表示保护涂层的磨损量。 该方法还包括基于目视检查估计保护涂层的磨损量。
    • 10. 发明授权
    • System and method for the detection and propagation measurement of flaws in a component or structure
    • 用于检测和传播测量元件或结构中缺陷的系统和方法
    • US06715365B2
    • 2004-04-06
    • US09848648
    • 2001-05-03
    • Kenneth John Davey
    • Kenneth John Davey
    • G01N1908
    • G01M3/04G01N19/08G01N2203/0244G01N2203/0664
    • A system 10 for continuously monitoring the integrity of a structure 14 includes a sensor pad 16 having a surface 18. The surface 18 is provided with a set of first channels 22 and interspersed second channels 24. Surface 18 is sealed onto the surface 12 of structure 14 so that the channels 22, 24 together with surface 12 form respective sets of first and second cavities 26 and 28. The first cavities 26 are placed in fluid communication with a vacuum source 101 via a third channel 30. The second cavities 28 are vented to the atmosphere via a fourth channel 34, through hole 35, and conduit 36. A high impedance 102 is placed in series between the vacuum source 101 and the first cavities 26. A differential pressure transducer 103 is connected across the high impedance 102 and monitors for change in vacuum condition between the vacuum source 101 and the vacuum in the cavities 26. If a fault 40 were to develop in structure 14 opening onto surface 12 and propagate to form a fluid communication path between one of the cavities 26 and adjacent cavity 28 there will be a change in the vacuum condition of the cavity 26 which will be detected by the transducer 103.
    • 用于连续监测结构14的完整性的系统10包括具有表面18的传感器垫16.表面18设置有一组第一通道22和散布的第二通道24.表面18密封在结构的表面12上 14,使得通道22,24与表面12一起形成相应的第一和第二空腔26和28的组。第一空腔26经由第三通道30与真空源101流体连通。第二空腔28被排出 通过第四通道34,通孔35和导管36连接到大气中。高阻抗102串联放置在真空源101和第一空腔26之间。差压变换器103跨越高阻抗102连接并且监视 用于真空源101和空腔26中的真空之间的真空状态的变化。如果在结构14中开口的故障40在表面12上开口并且传播以形成流体连通 在一个空腔26和相邻腔28之间的路径上,将由换能器103检测到的空腔26的真空状态将发生变化。