Extensometer comprising a flexible sensing element and Bragg gratings
    2.
    发明授权
    Extensometer comprising a flexible sensing element and Bragg gratings 失效
    扩展计包括柔性感测元件和布拉格光栅

    公开(公告)号:US07174061B2

    公开(公告)日:2007-02-06

    申请号:US10543442

    申请日:2004-01-30

    IPC分类号: G02B6/26 G02B6/34

    摘要: Extensometer with flexible test specimen and Bragg gratings applied in particular to the monitoring of concrete structures, is configured to measure deformations of a host material and comprises at least one test specimen which undergoes linear bending stresses, and at least one Bragg grating formed in an optic fibre and fixed to the test specimen. The extensometer configured such that any deformation of the host material is transmitted to the grating via the test specimen. The extensometer also comprises mechanical means which transform deformation of the material into bending of the test specimen, which deforms the grating.

    摘要翻译: 适用于特定于混凝土结构监测的灵活测试样本和布拉格光栅的伸缩计被配置成测量主体材料的变形,并且包括至少一个经历线性弯曲应力的测试样本,以及形成在光学元件中的至少一个布拉格光栅 纤维并固定在试样上。 引伸计被配置为使得主体材料的任何变形通过测试样本被传送到光栅。 引伸计还包括机械装置,其将材料的变形转变成试样的弯曲,这使得光栅变形。

    Inclinometer with bragg grating
    3.
    发明授权
    Inclinometer with bragg grating 失效
    倾斜仪与布拉格光栅

    公开(公告)号:US06665062B2

    公开(公告)日:2003-12-16

    申请号:US10240745

    申请日:2002-10-10

    IPC分类号: G01B1126

    摘要: A Bragg grating inclinometer that includes an upper part, a lower part forming a pendulum suspended from the upper part by an articulation, at least two portions of optic fiber placed on either side of the articulation, the ends of each portion being fastened to the two parts, each portion being previously put under tension between the two parts, and at least one Bragg grating in one of the portions. Any variation in the inclination of a structure to which the upper part is fastened induces a stress on the grating, which then modifies a light propagating in the portion where it is placed. The variation in inclination is determined from the modified light. The inclinometer can be applied in particular to the surveillance of civil engineering structures.

    摘要翻译: 一种布拉格光栅倾斜仪,包括上部,下部,通过铰接形成从上部悬挂的摆锤,至少两个光纤部分放置在关节的任一侧上,每个部分的端部被紧固到两个 部分,每个部分预先被放置在两个部分之间的张力下,并且其中一个部分中的至少一个布拉格光栅。 上部结构的结构的倾斜度的任何变化都会在光栅上产生应力,该应力然后修改在其放置部分中传播的光。 倾斜度的变化由修改光确定。 倾斜仪特别适用于土木工程结构的监视。