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INTEGRITY TESTING OF POST-TENSIONED STEEL TRUNNION RODS

机译：后张紧的钢耳轴杆的完整性测试

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The structural integrity of post-tensioned, steel trunnion rods has been evaluated on full size models as well as on site for the Army Corps of Engineer Dams at the West Point Dam in Georgia and the Robert F. Henry Dam in Alabama. A new method of nondestructive testing based upon, Dispersive Wave Propagation Technology, involves initiating and recording lateral (bending, flexural) wave motion in the rods. The resulting frequency spectrum from analysis of the collected field data is then compared to that from a theoretically generated model of the rods. The analytic model developed for this comparison allows the user to adjust theoretical tension values and other physical parameters so that frequency spectrum correlation can be matched, thus yielding a computed, estimated tension value for the rod(s) of interest.
机译：在全尺寸模型上以及在佐治亚州西点大坝的工兵大军和阿拉巴马州的罗伯特·F·亨利大坝上，都对后张紧的钢制耳轴杆的结构完整性进行了评估。一种基于色散传播技术的无损测试新方法，涉及在杆中发起和记录横向（弯曲，弯曲）波运动。然后将对收集到的现场数据进行分析得到的频谱与从理论上生成的棒模型得到的频谱进行比较。为进行此比较而开发的分析模型允许用户调整理论张力值和其他物理参数，以便可以匹配频谱相关性，从而得出感兴趣的杆的计算得出的估计张力值。

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