Microballoon impregnated fiber reinforced RTV film compression stress
    81.
    发明授权
    Microballoon impregnated fiber reinforced RTV film compression stress 失效
    微球浸渍纤维增强RTV膜压缩应力

    公开(公告)号:US5814734A

    公开(公告)日:1998-09-29

    申请号:US884782

    申请日:1997-06-30

    CPC classification number: G01L11/04 G01L1/255 G01L5/246

    Abstract: A thin film stress sensor measures the maximum compressive stress between two elements that are compressed together. The sensor is formed from a thin RTV film impregnated with microballoons and reinforced with carbon fibers to restrain the lateral deformation of the RTV so that more uniform pressure can be exerted on the microballoons when the sensors are uniaxially compressed.

    Abstract translation: 薄膜应力传感器测量压缩在一起的两个元件之间的最大压应力。 传感器由浸渍有微球的薄RTV薄膜形成,并用碳纤维增强,以抑制RTV的横向变形,从而当传感器被单轴压缩时,能够对微球施加更均匀的压力。

    Ultrasonic load measuring device with control feature
    82.
    发明授权
    Ultrasonic load measuring device with control feature 失效
    超声波负载测量装置具有控制功能

    公开(公告)号:US5220839A

    公开(公告)日:1993-06-22

    申请号:US797535

    申请日:1991-11-25

    Abstract: A load indicating device and a method of using a load indicating device for monitoring the deformation in and imparting torque to a load bearing member are disclosed and claimed. An ultrasonic transducer, grown on one surface of a load bearing member, such as a fastener, is used to determine the length, stress or other tensile load dependent characteristic of the member using ultrasonic techniques.

    Abstract translation: 公开并要求保护负载指示装置和使用负载指示装置来监视承载构件的变形并赋予扭矩的方法。 使用生长在诸如紧固件的承载构件的一个表面上的超声换能器来确定使用超声波技术的构件的长度,应力或其他拉伸载荷相关特性。

    Method and apparatus for ultrasonically measuring concentrations of
stress
    84.
    发明授权
    Method and apparatus for ultrasonically measuring concentrations of stress 失效
    用于超声测量压力浓度的方法和装置

    公开(公告)号:US4210028A

    公开(公告)日:1980-07-01

    申请号:US910788

    申请日:1978-05-30

    CPC classification number: G01N29/07 G01L1/255 G01N2291/02827

    Abstract: An apparatus for ultrasonically measuring concentrations of stress in objects of interest. The apparatus includes an ultrasonic transducer array for propagating acoustic waves in an object of interest along a plurality of determinable directions and from a plurality of determinable positions. A time interval counter measures the time of flight of the acoustic waves along the determinable directions and from the determinable positions. The time of flight measurements are reconstructed into a map of the variations in acoustic velocity within the object. The changes in acoustic velocity are then mathematically converted into a map of stress concentration areas in the object of interest.

    Abstract translation: 用于超声波测量感兴趣物体中的应力集中的装置。 该装置包括用于沿着多个可确定方向和多个可确定位置传播感兴趣对象中的声波的超声换能器阵列。 时间间隔计数器测量沿着可确定方向和从可确定位置的声波的飞行时间。 飞行时间测量被重建成对象内的声速变化的映射。 然后将声速的变化数学转换为感兴趣对象中的应力集中区域的图。

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