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首页> 外文期刊>Journal of the Institution of Engineers (Inida) >Crack Detection in Pipes Using Static Deflection Measurements
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Crack Detection in Pipes Using Static Deflection Measurements

机译：使用静态挠度测量的管道裂纹检测

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摘要

A method of detection of crack location based on measurement of deflection of long pipes under bending loads is presented in this paper. Crack is considered to be cross-sectional with straight front parallel to its diameter and perpendicular to the plane of deflection. The crack is modelled by a rotational spring whose stiffness can be determined using the linear elastic fracture mechanics approach. Pipes supported like cantilever and simply supported beams have been examined. The details of the method are presented. Experiments have been carried out using steel and aluminium pipes to demonstrate the effectiveness of the method. Cracks were introduced by wire-cut machining. The crack locations have been theoretically predicted with error less than 9 %.
机译：提出了一种基于弯曲载荷作用下长管挠度测量的裂纹位置检测方法。裂纹被认为是横截面，其笔直的前部平行于其直径并垂直于挠曲平面。裂纹由旋转弹簧建模，其旋转刚度可以使用线性弹性断裂力学方法确定。已检查了像悬臂那样支撑的管道和简单支撑的梁。介绍了该方法的详细信息。使用钢管和铝管进行了实验以证明该方法的有效性。裂纹是通过线切割加工引入的。从理论上预测裂纹位置，误差小于9％。

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