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    • 52. 发明公开
    • Device for monitoring fatique life and method of making same
    • Vorrichtung zurÜberwachungderMaterialermüdungund Verfahren zu ihrer Herstellung。
    • EP0149748A2
    • 1985-07-31
    • EP84113810.0
    • 1984-11-15
    • Tensiodyne Scientific Corporation
    • Brull, Maurice A.
    • G01B5/30G01N3/32G01L1/06
    • G01L1/06G01N3/062G01N2203/027G01N2203/0282
    • A device (10) for monitoring the fatigue life of a structural member is comprised of at least one and preferably a plurality of substantially flat, elongated coupons (12,14,16,18,20) which are fabricated of the same material as that of the member being monitored. The coupons (12,14,16,18,20) are secured in parallel to the member so that they all experience the same strain history as the member. Each of the coupons includes a different stress concentrating notch pattern so that the application of the same strain to all of the coupons (12,14,16,18,20) results in the development of different stress concentrations within the coupons. The development of different stress concentrations within the coupons (12,14,16,18,20) causes each coupon to have a different fatigue life, the fatigue life of each coupon (12,14,16,18,20) being a predetermined percentage of the fatigue life of the structural member being monitored.
    • 用于监测结构构件的疲劳寿命的装置(10)由至少一个并且优选多个基本上平坦的细长的试样(12,14,16,18,20)组成,其由与该材料相同的材料制成 的被监视的成员。 试样(12,14,16,18,20)与构件平行地固定,使得它们都经历与构件相同的应变历史。 每个试样包括不同的应力集中切口图案,使得向所有试样(12,14,16,18,20)施加相同的应变导致试样中不同应力集中的发展。 在优惠券(12,14,16,18,20)内的不同应力集中的发展导致每个试样具有不同的疲劳寿命,每个试样(12,14,16,18,20)的疲劳寿命是预定的 正在监测的结构构件的疲劳寿命的百分比。
    • 58. 发明申请
    • AUTOMATIC TRANSVERSE STRAIN EXTENSOMETER ARCHITECTURE
    • 自动横向应变伸展体结构
    • WO2016022229A1
    • 2016-02-11
    • PCT/US2015/038202
    • 2015-06-28
    • ILLINOIS TOOL WORKS INC.
    • CASTRO, Fernando L.JOYCE, Christopher M.
    • G01N3/08G01B5/30
    • G01N3/08F16H37/122G01B5/30G01B7/16G01N3/062
    • The disclosed embodiment is an extensometer to measure transverse strain with a passive vertical system making use of a linear optical encoder. The sensor arms are mounted on respective carriages which traverse on respective linear tracks. The carriages are spring-loaded so as to bias the sensor arms toward a closing direction. In order to separate the sensor arms and act against the force of the springs, the carriages are responsive to or pushed by upper and lower drive brackets which are affixed to respective upper and lower portions of a looped timing belt. The extensometer makes use of a low-friction design to minimize rolling friction in the movement of the two sensor arms. One carriage includes an encoder read-head which directly faces an encoder scale on the other carriage. In this configuration, the exact relative position of the two carriages, and hence the two sensor arms, can be read.
    • 所公开的实施例是使用线性光学编码器的被动垂直系统来测量横向应变的引伸计。 传感器臂安装在相应的托架上,横列各自的线性轨迹。 托架是弹簧加载的,以便将传感器臂朝着关闭方向偏置。 为了分离传感器臂并抵抗弹簧的作用力,滑架由上和下驱动支架响应或推动,上和下驱动支架固定在环形同步带的相应上部和下部。 引伸计使用低摩擦设计来最小化两个传感器臂的运动中的滚动摩擦。 一个托架包括编码器读头,其直接面对另一托架上的编码器刻度。 在这种配置中,可以读取两个滑架以及因此两个传感器臂的精确相对位置。
    • 60. 发明申请
    • MECHANICAL STRAIN EXTENSOMETER
    • 机械应变伸缩计
    • WO2016156277A1
    • 2016-10-06
    • PCT/EP2016/056744
    • 2016-03-28
    • SCK.CEN
    • MARMY, Pierre
    • G01B5/30G01N3/06
    • G01B21/32G01N3/06G01N3/062
    • A system (100) for measuring mechanical strain. The system comprises a main spring (113) and a connecting piece (114) both with an open concave cross-section, the connecting piece is rotatable mountable inside the main spring at a fixing point (117), such that the respective open concave cross-sections are in the same plane and the open parts are oriented in the same direction. The legs of the main spring (113) are connectable with the specimen shoulders for applying the tips of the measuring arms onto the gauge length of the specimen. Measuring arms (123, 124) are rotatably mountable on the legs of the connecting piece (114) so as to push against the specimen when mounted and so as to rotate when the measured object is subject to strain.
    • 一种用于测量机械应变的系统(100)。 该系统包括主弹簧(113)和连接件(114),两者具有敞开的凹入横截面,连接件可在固定点(117)的内部可旋转地安装在主弹簧的内部,使得各自的开口凹交叉 截面在相同的平面上,开放部分朝向相同的方向。 主弹簧(113)的腿可与试样肩部连接,用于将测量臂的尖端施加到试样的标距上。 测量臂(123,124)可旋转地安装在连接件(114)的腿部上,以便在安装时推靠在试样上,并且当所测量的物体受到应变时旋转。